# 1 Car Service - Engine, Aircon, Gearbox (1car.sg)

> Independent continental and Japanese car repair workshop in Singapore.
> 160 Sin Ming Drive, #03-07 Sin Ming AutoCity, Singapore 575722. WhatsApp 8033 7708 (https://wa.me/6580337708).
> Specialists in gearbox overhaul, engine overhaul, car aircon, servicing, batteries and diagnostics for continental and Japanese cars.

## Key facts
- Rated 4.9 stars from 1,600+ Google reviews.
- Warranties: full gearbox overhaul, rebuild and whole-gearbox repair 2 years / 40,000 km; engine overhaul 3 years / 60,000 km; aircon and electrical repair at least 6 months. Routine servicing carries no workmanship warranty, and component-level gearbox repairs (torque converter, valve body, mechatronic) are not covered by the whole-gearbox warranty.
- Dealer-level diagnostics: PIWIS (Porsche), ISTA (BMW and MINI), XENTRY (Mercedes-Benz), ODIS/VAG (Audi and Volkswagen), VIDA (Volvo).
- Gearbox diagnosis is always free. Free towing for major repairs such as gearbox and engine overhauls.
- Instalment payments via Atome, Grab and Shopee.
- Repair prices from documented jobs (exact where invoiced, about/around where the job record was approximate): https://1car.sg/car-repair-cost-singapore/
- Book online: https://1car.sg/appointment/ · Address, opening hours and contact: https://1car.sg/contacts/

## Services and specialist pages
- [Air Suspension Repair Singapore](https://1car.sg/air-suspension-repair-singapore/): Independent air suspension and Airmatic repair in Singapore. We fix the failed strut, compressor or valve block, not your whole system. 4.9★.
- [Audi & Volkswagen Gearbox Repair Singapore](https://1car.sg/audi-volkswagen-gearbox-repair/): Singapore's best Audi and VW gearbox specialists. DSG fixed properly with ODIS/VAG diagnostics, backed by a 2 year / 40,000km warranty. Free diagnosis.
- [Auxiliary Battery Replacement Singapore](https://1car.sg/auxiliary-battery-replacement-singapore/): Auxiliary battery malfunction, or a dead backup battery? We test, fit the correct battery, and code it where your car needs it, for Mercedes, Volvo, BMW, Audi and more. 4.9-star rated in Singapore.
- [Bentley Workshop Singapore](https://1car.sg/bentley-repair-workshop/): Independent Bentley specialist in Singapore. Careful work by senior technicians: servicing, engine, gearbox and aircon, honest pricing. 4.9★ on Google.
- [Audi Workshop Singapore](https://1car.sg/best-audi-workshop-singapore/): Singapore's #1 Audi specialist workshop: ODIS diagnostics and documented work you can trust. 4.9★ from 1,600+ Google reviews.
- [BMW Workshop Singapore](https://1car.sg/best-bmw-workshop-singapore/): Specialist BMW workshop in Singapore: ISTA diagnostics and documented work you can trust. 4.9★ from 1,600+ Google reviews.
- [Car Aircon Repair Singapore](https://1car.sg/best-car-aircon-repair-singapore/): Singapore's best car aircon specialists. We fix the fault, compressor, gas leak or electrical, backed by at least a 6-month warranty.
- [Car Aircon Servicing Singapore](https://1car.sg/best-car-aircon-servicing-singapore/): Singapore's best car aircon servicing. Keeps your cabin cold in the heat: cooling check, cabin filter, system clean and gas top-up. Clear, honest price.
- [Best Car Servicing Singapore - Skip Dealer Prices](https://1car.sg/best-car-servicing-singapore/): Independent car servicing in Singapore, all makes. Oil, filters, fluids, brakes and a full inspection at a fraction of dealer prices. WhatsApp us.
- [Best Car Workshop Singapore](https://1car.sg/best-car-workshop-singapore/): Independent continental car workshop at Sin Ming AutoCity. Engine, gearbox, aircon, servicing and diagnostics under one roof. Honest quote first.
- [Mercedes Workshop Singapore](https://1car.sg/best-mercedes-workshop-singapore/): Singapore's #1 Mercedes specialist workshop: XENTRY diagnostics and every job documented. 4.9★ from 1,600+ Google reviews.
- [BMW Gearbox Overhaul Singapore](https://1car.sg/bmw-gearbox-overhaul-singapore/): Singapore's best BMW gearbox specialists. We rebuild ZF 6HP and 8HP properly with ISTA diagnostics, backed by a 2 year / 40,000km warranty. Free diagnosis.
- [Brake Pad & Disc Replacement Singapore](https://1car.sg/brake-pad-replacement-singapore/): Squealing, grinding or a soft pedal? Singapore's highest-rated workshop replaces brake pads and discs with OEM-grade parts. Honest quote before any work.
- [Car Aircon Compressor Replacement Singapore](https://1car.sg/car-aircon-compressor-replacement-singapore/): Failed car aircon compressor? Singapore's best aircon specialists diagnose first, then replace it with quality parts and fresh oil. 1-year warranty.
- [Car Aircon Not Cold? Causes & Fixes in Singapore](https://1car.sg/car-aircon-not-cold/): Car aircon not cold in Singapore? We find the cause, gas leak, weak compressor or cooling coil, and fix it. At least 6-month warranty.
- [Car Battery Replacement Singapore](https://1car.sg/car-battery-replacement-singapore/): Slow crank or won't start? We test before we replace, fit the correct battery, and code it for start-stop cars. Fast, honest, 4.9-star rated in Singapore.
- [Car Coolant Leak Singapore](https://1car.sg/car-coolant-leak/): Coolant leak or overheating? We pressure test to find the real leak, radiator, hose, water pump or head gasket, then give a fixed quote.
- [Car Overheating in Singapore? What To Do & How We Fix It](https://1car.sg/car-overheating-singapore/): Temperature warning climbing? Stop driving. Then WhatsApp Singapore's highest-rated workshop. We find the real cause, with free towing and an honest quote.
- [Car Repair Singapore](https://1car.sg/car-repair/): Car repair in Singapore for continental and Japanese cars. Engine, gearbox, aircon, electrical and servicing under one roof. Honest quote.
- [Car Servicing & Maintenance Singapore](https://1car.sg/car-servicing-maintenance/): A plain guide to car servicing and maintenance in Singapore: what a service includes, the right service intervals, what we check and why it matters.
- [Car Suspension Repair Singapore](https://1car.sg/car-suspension-repair-singapore/): Knocking over humps, bouncy ride, uneven tyre wear? Singapore's highest-rated workshop repairs absorbers, control arms and bushings. Honest quote first.
- [Continental Gearbox Repair Singapore](https://1car.sg/continental-gearbox-repair/): Singapore's best continental gearbox specialists. PDK, DSG, ZF and Mercedes autos rebuilt properly, backed by a 2 year / 40,000km warranty. Free diagnosis.
- [ECU Repair Singapore](https://1car.sg/ecu-repair/): Check-engine light, won't start or limp mode? Often the ECU. We diagnose, repair, reflash or replace it. At least 6-month warranty.
- [Engine Mounting Replacement Singapore](https://1car.sg/engine-mounting-replacement-singapore/): Vibration at idle or a clunk in reverse? We confirm the worn engine mounting first, then fit quality OEM-grade mounts. 4.9★ from 1,600+ Google reviews, honest quote first.
- [Engine Oil Leak Repair Singapore](https://1car.sg/engine-oil-leak-repair-singapore/): Oil under the car or a burning smell? We trace the engine oil leak to its real source, then fix only that. 4.9★ from 1,600+ Google reviews, honest quote first.
- [Engine Overhaul Singapore](https://1car.sg/engine-overhaul/): Singapore's best engine specialists. We rebuild your engine properly with dealer-level diagnostics, backed by a 3 year / 60,000km warranty.
- [Engine Repair Workshop Singapore](https://1car.sg/engine-repair-workshop/): Engine repair in Singapore for oil leaks, overheating, timing, sensors and check-engine faults. Honest quote first. 4.9★ on Google.
- [Ferrari Workshop Singapore](https://1car.sg/ferrari-workshop/): Independent Ferrari specialist in Singapore: careful work by senior technicians, honest pricing, quality OEM-grade parts. 4.9★ from 1,600+ Google reviews.
- [Gearbox Overhaul Singapore](https://1car.sg/gearbox-overhaul/): Singapore's best gearbox specialists. We rebuild your gearbox properly with dealer-level diagnostics, backed by a 2 year / 40,000km warranty.
- [Gearbox Rebuild Singapore](https://1car.sg/gearbox-rebuild-singapore/): Singapore's best gearbox rebuild specialists. We strip and rebuild it properly, backed by a 2 year / 40,000km warranty. Free diagnosis.
- [Hybrid Battery Repair Singapore](https://1car.sg/hybrid-battery-repair-singapore/): Hybrid warning light or poor fuel economy? We repair the traction battery, replacing faulty cells and modules, cheaper than a dealer swap.
- [Jaguar Specialist Singapore](https://1car.sg/jaguar-workshop-singapore/): Singapore's best independent Jaguar specialists. Dealer-level diagnostics and honest pricing for the F-PACE, XE, XF and more. WhatsApp us.
- [Japanese & Asian Car Gearbox Overhaul Singapore](https://1car.sg/japanese-gearbox-overhaul/): Singapore's best Japanese car gearbox specialists. We rebuild your gearbox or CVT properly, backed by a 2 year / 40,000km warranty. Free diagnosis.
- [Maserati Workshop Singapore](https://1car.sg/maserati-repair-workshop/): Independent Maserati specialist in Singapore. Servicing, engine, gearbox, aircon and electrical with honest pricing. 4.9★ from 1,600+ Google reviews.
- [Mechatronic Unit Repair Singapore](https://1car.sg/mechatronic-unit-repair/): Singapore's best mechatronic unit specialists. We fix the mechatronic fault with dealer-level diagnostics, not replace your whole gearbox. Free diagnosis.
- [Best Mercedes Gearbox Specialists Singapore](https://1car.sg/mercedes-gearbox-repair-and-overhaul/): Singapore's best Mercedes gearbox specialists. We rebuild 7G-Tronic and 9G-Tronic with Xentry diagnostics, backed by a 2 year / 40,000km warranty.
- [Porsche Gearbox Repair Singapore](https://1car.sg/porsche-gearbox-repair/): Singapore's best Porsche gearbox specialists. PDK or Tiptronic jerking or in limp mode? We rebuild it with PIWIS diagnostics. 2 year / 40,000km warranty.
- [Porsche Servicing Singapore](https://1car.sg/porsche-servicing-singapore/): Independent Porsche servicing in Singapore from $318 with Mobil 1, oil and filter, fluids and brakes. Dealer-level care, dealer bill skipped.
- [Porsche Workshop Singapore](https://1car.sg/porsche-workshop/): Independent Porsche specialist in Singapore: PIWIS diagnostics and documented work you can trust. 4.9★ from 1,600+ Google reviews.
- [Pre-Purchase Inspection Singapore](https://1car.sg/pre-purchase-inspection/): Independent pre-purchase inspection in Singapore before you buy a used car. Engine and gearbox checked, oil leak checks, diagnostic scan, road test, written report.
- [Rolls-Royce Workshop Singapore](https://1car.sg/rolls-royce-repair-workshop/): Independent Rolls-Royce specialist in Singapore: specialist tools and senior technicians for the Phantom, Ghost, Wraith, Cullinan and Dawn. 4.9★ on Google.
- [Sell Car Singapore](https://1car.sg/sell-car-singapore/): Sell or consign your car in Singapore the easy way. Free valuation, trusted dealers compete, we handle the paperwork, and you get paid fast. WhatsApp us.
- [Steering Rack Repair Singapore](https://1car.sg/steering-rack-repair-singapore/): Knocking or stiff steering? We confirm the rack is the fault first, then fix or replace it and calibrate as needed. 4.9★ from 1,600+ Google reviews, honest quote first.
- [Torque Converter Repair Singapore](https://1car.sg/torque-converter-repair-singapore/): Singapore's best torque converter specialists. We fix the actual fault, not replace your whole gearbox, with dealer-level diagnostics. Free diagnosis.
- [Transmission Overhaul Singapore](https://1car.sg/transmission-overhaul-singapore/): Singapore's best transmission overhaul specialists. Whole-system rebuild backed by a 2 year / 40,000km gearbox warranty. Free diagnosis.
- [Valve Body Repair Singapore](https://1car.sg/valve-body-repair-singapore/): Singapore's best valve body specialists. We fix the valve body fault, not replace your whole gearbox, with dealer-level diagnostics. Free diagnosis.
- [Volkswagen Workshop Singapore](https://1car.sg/volkswagen-workshop/): Singapore's #1 Volkswagen specialist workshop: ODIS diagnostics and documented work you can trust. 4.9★ from 1,600+ Google reviews.
- [Volvo Workshop Singapore](https://1car.sg/volvo-workshop/): Volvo specialist workshop in Singapore: VIDA diagnostics and proper documented work that protects your car's resale value. 4.9★ from 1,600+ Google reviews.
- [Walnut Blasting & Carbon Cleaning Singapore](https://1car.sg/walnut-blasting-carbon-cleaning-singapore/): Engine carbon cleaning and walnut blasting in Singapore for direct-injection Audi, VW, BMW and Mercedes. Restore lost power, smoothness and economy. From $380.

## Guides and articles
- [BMW Repair Guide: Pre-Emptive Auto Cooler Replacement](https://1car.sg/bmw-repair-guide-pre-emptive-auto-cooler-replacement/): Why a leaking BMW auto cooler can contaminate your gearbox, the warning signs, the repair cost, and why replacing it early saves you thousands.
- [Engine Overhaul Singapore: A Clear Guide to Save Your Car](https://1car.sg/engine-overhaul-singapore-clear-guide-to-save-your-car/): A clear guide to engine overhauls in Singapore: what they involve, the warning signs, the cost, how long they take, and why overhauling beats replacing.
- [Engine Overhaul Singapore: What Every Car Owner Should Know](https://1car.sg/engine-overhaul-singapore-what-every-car-owner-should-know/): What to know before an engine overhaul in Singapore: the warning signs, repair vs top overhaul vs full overhaul, and how to avoid overpaying.
- [How to Choose a Car Workshop in Singapore: An Honest Guide From Inside the Industry](https://1car.sg/how-to-choose-car-workshop-singapore/): How to choose a car workshop in Singapore: the checklist that matters. Diagnostics, warranties, reviews, quotes and the red flags, from inside the industry.
- [Mercedes Service Centre Singapore: Stop Paying Dealer Prices](https://1car.sg/mercedes-service-centre-singapore-stop-paying-dealer-prices/): An independent Mercedes specialist in Singapore: dealer-level servicing and repairs without the dealer bill. See real prices and how much you save.
- [Porsche Service Centre Singapore: A Smarter Alternative Workshop](https://1car.sg/porsche-service-centre-singapore-best-alternative-workshop/): An independent Porsche specialist in Singapore: PIWIS-level diagnostics and dealer-level work without the main-dealer bill. Fair prices, clear quotes.
- [Porsche Service Centre Tanjong Penjuru: Is It Too Expensive?](https://1car.sg/porsche-service-centre-tanjong-penjuru-is-it-too-expensive/): Wondering if the Porsche service centre at Tanjong Penjuru is too expensive once your warranty ends? The honest independent alternative in Singapore.
- [Transmission Issue? Discover Common Problems and Solutions](https://1car.sg/transmission-issue-discover-common-problems-and-solutions/): A clear guide to car transmission issues in Singapore: the warning signs, the key components, common faults and their causes, and how to fix them properly.
- [Wrong Fuel in Your Car in Singapore: What to Do in the First Ten Minutes](https://1car.sg/wrong-fuel-in-car-singapore/): Put the wrong fuel in your car in Singapore? What to do in the first ten minutes, what it costs to fix, and the real case of a $250 clean vs a $15,000-plus dealer quote.

## Case studies
Real completed jobs, each with the symptom, diagnosis and parts, plus the cost and time where the job records allow it, and the warranty where the job carries one (routine servicing and component-level repairs are road tested before handover instead).

- [Case studies index](https://1car.sg/case-studies/): all repair case studies
- [Gearbox case studies](https://1car.sg/case-studies/gearbox/): documented gearbox and transmission repairs with costs where recorded
- [Engine case studies](https://1car.sg/case-studies/engine/): documented engine repairs and overhauls with costs where recorded
- [Aircon case studies](https://1car.sg/case-studies/aircon/): documented car aircon repairs with costs where recorded
- [Audi S5 Engine Overhaul: 1 Litre Per 1,000km Oil Burn Sorted, 3-Year / 60,000km Warranty](https://1car.sg/case-studies/audi-s5-engine-overhaul-singapore/): Audi S5 was burning a litre of oil every 1,000km and leaking from multiple points. We did a full engine overhaul. 3-year / 60,000km warranty.
- [BMW 5 Series: Oil Leaks, Worn Suspension Arms and a Fuel Pump, All Fixed in One Go](https://1car.sg/case-studies/bmw-fuel-pump-oil-leak-suspension-singapore/): BMW 5 Series came in with oil leaks and worn suspension arms. Valve cover, fuel pump, camshaft sensors, oil sump and control arms replaced in one visit.
- [BMW X4: Full 4-Wheel Brake Overhaul, Valve Cover Replaced, Spark Plugs Renewed](https://1car.sg/case-studies/bmw-x4-brake-overhaul-valve-cover-singapore/): BMW X4 in for a full brake overhaul and valve cover replacement. All discs and pads replaced, spark plugs renewed. Rear shock absorber leak also found.
- [Mercedes-Benz Suspension Overhaul and Oil Pump Solenoid Fault: All Sorted for $6,200 Nett](https://1car.sg/case-studies/mercedes-suspension-oil-pump-solenoid-singapore/): Mercedes-Benz came in with worn suspension and an engine oil pump solenoid fault. Full suspension, spark plugs, oils and battery all sorted. $6,200 nett.
- [Mercedes-Benz W211 E230 Gearbox Overhaul: Jerking Fixed, Drives Like New](https://1car.sg/case-studies/mercedes-w211-gearbox-overhaul-singapore/): Mercedes-Benz W211 E230 was jerking and lagging when shifting. We rebuilt the gearbox. Drives like new with a 2-year / 40,000km warranty.
- [Volvo Major Service: Oil Separator Replaced, OEM Parts Throughout, Battery Tested and Renewed](https://1car.sg/case-studies/volvo-oil-separator-major-service-singapore/): Volvo came in due for a major service. We replaced the oil separator, serviced with Castrol EDGE 0W-20 and Volvo OEM filters, and replaced a weak battery.
- [Audi A3 Full Suspension Overhaul: Front and Rear, All Original Parts, Alignment Included](https://1car.sg/case-studies/audi-a3-suspension-overhaul-singapore/): Audi A3 suspension overhaul: front and rear absorbers, lower arms, ball joints, linkages and subframe bushes, all original parts, alignment done.
- [BMW X4 at 82,000km: Timing Kit, Cam Magnet Leaks and Valve Cover](https://1car.sg/case-studies/bmw-x4-timing-kit-valve-cover-singapore/): BMW X4 at 82,000km with a slow cold start. We replaced the timing kit, fixed cam magnet oil leaks and the valve cover. Final cost $3,749.60 with GST.
- [Honda HR-V Aircon Not Cold: Failed Compressor and Condenser Replacement, At Least 6-Month Warranty](https://1car.sg/case-studies/honda-hrv-aircon-compressor-condenser-singapore/): Honda HR-V aircon not cold. High pressure and dirty compressor oil pointed to a failed compressor. We replaced the compressor and condenser.
- [Mazda Fan Belt Cracked, Rear Absorbers Leaking: Found During a Service, Fixed the Same Day](https://1car.sg/case-studies/mazda-fan-belt-absorber-singapore/): Mazda in for a service. We found a cracked fan belt and leaking rear absorbers. Both replaced with original Mazda parts. Car collected the same day.
- [Porsche Macan at 112,560km: AWD Fault Warning, Driveshaft and CV Joint Leak, Worn Absorbers](https://1car.sg/case-studies/porsche-macan-driveshaft-cv-joint-singapore/): Porsche Macan at 112,560km with AWD fault warning and a knocking sound when turning. We replaced the front driveshaft, CV joint, absorbers and ABS sensor.
- [Lexus IS F-Sport AVS Absorber Replacement: All 4 OEM Electric Absorbers at $5,500 Nett](https://1car.sg/case-studies/lexus-is-f-sport-absorber-replacement-singapore/): Lexus IS F-Sport came in with a harsh, degraded ride. All 4 OEM electric AVS absorbers replaced at $5,500 nett. Ride quality fully restored, road tested.
- [Mercedes GLC Engine Mount and Gearbox Mount Replacement: OEM Parts, $830 Nett](https://1car.sg/case-studies/mercedes-glc-engine-mount-replacement-singapore/): Blue Mercedes GLC W253 came in with vibration under load. Both engine and gearbox mounts replaced with OEM parts at $830 nett. XENTRY-checked, road tested.
- [Mitsubishi Outlander Multi-System Repair: Both CV Driveshafts, Radiator, Brakes and Wheel Alignment in One Visit](https://1car.sg/case-studies/mitsubishi-outlander-driveshaft-brake-repair-singapore/): A Mitsubishi Outlander came in for repairs: both CV driveshafts, radiator, hoses, brakes and wheel alignment. All done in one visit with honest pricing.
- [Porsche Macan Major Service at 55,249km: Oil, Throttle Body Clean and Brake Fluid](https://1car.sg/case-studies/porsche-macan-major-service-singapore/): Dark blue Porsche Macan came in at 55,249km for oil, throttle body clean and brake fluid. PIWIS-checked, every item quoted before work began.
- [Skoda Octavia Cooling System Overhaul: Radiator, Hoses, Timing Belt and Brakes in One Visit](https://1car.sg/case-studies/skoda-octavia-cooling-system-overhaul-singapore/): A Skoda Octavia came in with sludgy oil and an overheating complaint. Full cooling system overhaul: radiator, hoses, timing belt, brakes done in one visit.
- [Mercedes GLC: Front Lower Arms, Full Brake Overhaul and Active Bonnet Error Fixed in One Visit](https://1car.sg/case-studies/mercedes-glc-lower-arm-brake-bonnet-singapore/): Mercedes GLC with worn front lower arms, failed brakes front and rear, and an active bonnet malfunction. Full repair at our Singapore workshop.
- [Porsche Cayman 987 Gearbox Coolant Contamination: Why Flushing Failed and What Fixed It](https://1car.sg/case-studies/porsche-cayman-gearbox-torque-converter-singapore/): Porsche Cayman 987 gearbox coolant contamination. Three flushes at another workshop failed to clear it. We found the root cause and overhauled the gearbox.
- [Audi Q7 Oil Leak and Drive System Fault: Diagnosed and Fixed](https://1car.sg/case-studies/audi-q7-oil-leak-spark-plugs-singapore/): Silver Audi Q7 TFSI Quattro came in with an oil leak and a Drive system fault warning. We repaired the leak and replaced the spark plugs.
- [BMW Heater Core Replacement and Multiple Fault Code Repair](https://1car.sg/case-studies/bmw-heater-core-electrical-fault-singapore/): Blue BMW came in with a cold cabin and multiple fault codes. We replaced the heater core, fixed the ABS sensor, and resolved TPMS and TCM faults.
- [Mercedes CLA180 Driveshaft CV Boot Failure: What Happened and the Fix](https://1car.sg/case-studies/mercedes-cla180-driveshaft-cv-joint-singapore/): Mercedes CLA180 2018 had a torn CV boot with grease leakage. We replaced the front driveshaft and confirmed smooth drive. Quote before we start.
- [Mercedes E350e Plug-In Hybrid Charging Unit: What Failed and How We Fixed It](https://1car.sg/case-studies/mercedes-e350e-plug-in-control-unit-singapore/): Mercedes E350e PHEV came in with an OBC fault. We replaced the on-board charger control unit through the boot, restoring charging. Quote before we start.
- [Mercedes GLA Brake Overhaul: All Four Corners Done Right](https://1car.sg/case-studies/mercedes-gla200-brake-overhaul-singapore/): A Mercedes-Benz GLA 200 came in for a full brake overhaul, all four corners. New OEM discs and pads replaced worn-out parts. Here is what we found and did.
- [Mercedes GLE Turbo Boost Sensor: Power Loss Diagnosed and Fixed](https://1car.sg/case-studies/mercedes-gle-turbo-boost-sensor-singapore/): Black Mercedes-Benz GLE came in with a turbo boost pressure fault. We replaced the OEM boost sensor and cleared the fault. Quote before we start.
- [Volvo V40 Seized Aircon Compressor: Smoke, No Cold Air, and a Full Fix](https://1car.sg/case-studies/volvo-v40-aircon-compressor-seized-singapore/): Red Volvo V40 came in with a seized AC compressor, worn brake pads, failed engine mounts, and a worn drive belt. Here is what we found and fixed.
- [Diesel in a Petrol Tank: How We Fixed This Mercedes GLB for $250, Not $15,000](https://1car.sg/case-studies/mercedes-glb-diesel-in-petrol-fuel-system-clean-singapore/): A Mercedes GLB owner put diesel in the petrol tank. The authorised dealer quoted over $15,000 to replace the fuel system. We cleaned it for $250 instead.
- [BMW X1 Gearbox Overhaul and Torque Converter Replacement: $3,400 Total, 2 Year / 40,000km Warranty](https://1car.sg/case-studies/bmw-x1-gearbox-torque-converter-overhaul-singapore/): BMW X1 automatic gearbox slipping with a noisy torque converter. We did a full gearbox overhaul plus converter replacement. 2 year / 40,000km warranty.
- [Hyundai Ioniq Electric Gearbox Overhaul: How We Restored Drive to an EV with a Failing Reduction Gearbox](https://1car.sg/case-studies/hyundai-ioniq-ev-gearbox-overhaul-singapore/): Hyundai Ioniq Electric lost drive from a failing reduction gearbox. We did a full gearbox overhaul and test drove it. 2 year / 40,000km warranty.
- [Mercedes GLC Major Service and Suspension Arms: A Complete Liqui-Moly Service and Suspension Overhaul](https://1car.sg/case-studies/mercedes-glc-major-service-suspension-overhaul-singapore/): Mercedes GLC coupe in for a major service with spark plugs, air filter, cabin filter and gearbox oil. We also replaced the worn front suspension arms.
- [MINI Cooper S Engine Overhaul and Gearbox Overhaul: How We Fixed Both at the Same Time](https://1car.sg/case-studies/mini-cooper-s-engine-gearbox-overhaul-singapore/): MINI Cooper S came in overheating with gearbox trouble. We did a full engine overhaul and a full gearbox overhaul. Engine warranty 3 year / 60,000km.
- [Range Rover Sport PHEV Air Suspension Collapse: How We Diagnosed and Replaced the Failed Front Right Strut](https://1car.sg/case-studies/range-rover-sport-phev-air-suspension-singapore/): Range Rover Sport PHEV towed in with air suspension collapsed and a high-voltage warning. We replaced the front air strut and reset the system.
- [Skoda Superb DSG Gearbox Overhaul: Full Rebuild and Mechatronic Unit Replacement Done Together](https://1car.sg/case-studies/skoda-superb-dsg-gearbox-overhaul-singapore/): Skoda Superb DSG slipping and jerking. We did a full DSG gearbox overhaul plus mechatronic unit replacement. 2 year / 40,000km warranty.
- [Volvo XC90 Vibration, Oil Leak and Worn Suspension: How We Found All the Faults and Fixed Them Properly](https://1car.sg/case-studies/volvo-xc90-suspension-engine-mount-oil-leak-singapore/): Volvo XC90 came in vibrating and leaking oil. We found worn control arms, cracked engine mounts, a propeller shaft oil leak and due brakes. All fixed.
- [Honda CR-V VTEC: Multiple Oil Leaks, Cracked Fan Belt and Worn Control Arms Fixed Properly](https://1car.sg/case-studies/honda-crv-oil-leak-fan-belt-repair-singapore/): A Honda CR-V VTEC came in with several oil leaks and a cracked fan belt. We replaced five oil seals, the valve cover, fan belt and worn suspension parts.
- [Jaguar F-Pace Front Shock Absorbers and Linkage: Original Parts, Honest Advice](https://1car.sg/case-studies/jaguar-f-pace-suspension-absorber-singapore/): A Jaguar F-Pace needed new front shock absorbers, linkage and a battery. All original parts, no wheel alignment needed. A repeat customer.
- [Mazda 3 Gearbox Cannot Engage: Internal Mechanism Stuck, Full Overhaul Done](https://1car.sg/case-studies/mazda-3-gearbox-cannot-engage-singapore/): A Mazda 3 could not engage any gear. We dismantled the gearbox and found a stuck internal mechanism. Full overhaul done, 2 year / 40,000km warranty.
- [Mitsubishi Attrage CVT Gearbox Overhaul: Valve Body Replaced and Engine Mounts Sorted](https://1car.sg/case-studies/mitsubishi-attrage-cvt-gearbox-overhaul-singapore/): A Mitsubishi Attrage came in with CVT gearbox trouble. A full CVT overhaul plus valve body and engine mounts, backed by a 2 year, 40,000km warranty.
- [Porsche Macan at 87,585km: Major Service, PDK Fluid, Brembo Brakes and Collapsed Engine Mounts](https://1car.sg/case-studies/porsche-macan-engine-mount-pdk-service-singapore/): A Porsche Macan in for a full service. We found collapsed engine mounts and worn brakes. Major service, PDK fluid, Brembo brakes and mounts in one visit.
- [BMW Brake Warning on the iDrive: All Four Corners Renewed Plus a Full Service](https://1car.sg/case-studies/bmw-brake-pad-disc-replacement-singapore/): BMW iDrive warning triggered for rear brake pads and brake system. All four corners inspected and renewed: pads, discs and sensors, plus a full service.
- [BMW X1 Coolant Leak at 29,000km: Thermostat, Water Pump and Major Service Done Together](https://1car.sg/case-studies/bmw-x1-coolant-leak-major-service-singapore/): BMW X1 losing coolant at 29,000km. Thermostat, water pump and hoses replaced together with a full major service in one visit.
- [Pre-Purchase Car Inspection: One Audi A4 We Advised Against, One Volvo S90 That Checked Out](https://1car.sg/case-studies/car-pre-purchase-inspection-singapore/): A customer inspected two used cars before buying. The Audi A4 had worn control arms and sinking engine mounts. The Volvo S90 was clean.
- [Honda Odyssey Oil Leak: Valve Cover, Driveshaft and VTEC Seals All Fixed in One Visit](https://1car.sg/case-studies/honda-odyssey-oil-seal-repair-singapore/): Honda Odyssey leaking oil from multiple seals. Valve cover, driveshaft, main pulley and VTEC seals all replaced in one visit. Car dry and road tested.
- [Subaru Forester Aircon Not Cold: Full A/C Overhaul at 88,000km](https://1car.sg/case-studies/subaru-forester-aircon-compressor-singapore/): Subaru Forester aircon not cold at 88,000km. UV dye confirmed compressor leak. Full A/C overhaul: compressor, condenser, cooling coil and pipes replaced.
- [BMW Valve Cover Oil Leak: Caught During a Service, Fixed Before It Got Worse](https://1car.sg/case-studies/bmw-valve-cover-oil-leak-singapore/): A BMW 3 Series in for an oil service and we found the valve cover leaking. New original valve cover assembly fitted and the oil service done in one visit.
- [Audi Q3 Major Service and Tyre Replacement in Singapore: Looked After Properly](https://1car.sg/case-studies/audi-major-service-singapore/): An Audi Q3 came in for a full service and 4 new tyres, with a throttle body clean and brake fluid change. Honest inspection and clear pricing up front.
- [BMW 3 Series Brakes and Suspension: A Full 4-Corner Job Done Properly in Singapore](https://1car.sg/case-studies/bmw-3-series-brake-suspension-repair-singapore/): A BMW 3 Series came in with worn brakes and a vibration. We found worn pads and discs, cracked lower arms and perished engine mounts. Full scope repaired.
- [BMW 4 Coupe Cold-Start Knocking: Fixed with a Proper Oil Change in Singapore](https://1car.sg/case-studies/bmw-4-coupe-engine-knock-oil-change-singapore/): A BMW 4 Coupe knocked when accelerating from cold. We serviced it and changed the oil. The knock was gone and the owner confirmed it in a follow-up.
- [Hyundai Elantra Engine Mount Replacement in Singapore: Vibration Fixed, Full Service Done](https://1car.sg/case-studies/hyundai-elantra-engine-mount-replacement-singapore/): A Hyundai Elantra had a vibration and rattle from the engine. We found worn engine and gearbox mounts, did a full service and fixed it in one visit.
- [Mercedes GLA Major Service at 136,000km: Engine Mount Found Cracked on Inspection](https://1car.sg/case-studies/mercedes-engine-mount-major-service-singapore/): A Mercedes GLA came in at 136,000km for a major service. We found a cracked engine mount and a coolant hose on inspection. Quoted and sorted in one visit.
- [Nissan Qashqai Turbo Replacement in Singapore: The Police-Siren Sound is Gone](https://1car.sg/case-studies/nissan-qashqai-turbo-replacement-singapore/): A Nissan Qashqai was making a loud whistling sound like a police siren. We diagnosed a failing turbocharger and replaced it. The noise was gone.
- [VW Passat DSG Mechatronic, Engine Mounts and Coolant Hose: A Full Sort-Out in Singapore](https://1car.sg/case-studies/volkswagen-passat-engine-gearbox-repair-singapore/): VW Passat DSG with a leaking mechatronic unit, burst coolant hose and worn engine mounts. We sorted it all; the owner said it felt like a new car engine.
- [Honda Odyssey Brakes Worn to 30 Percent: How We Replaced the Pads and Disc Rotors With Genuine Honda Parts](https://1car.sg/case-studies/honda-odyssey-brake-pads-rotors-singapore/): Honda Odyssey in for servicing with front and rear brakes at 30 percent and worn rotors. We replaced the pads and rotors and road tested it.
- [Porsche Cayenne Hybrid With a Blinking Check Light and a Hybrid Fault: How We Found Two Problems and Fixed Both](https://1car.sg/case-studies/porsche-cayenne-hybrid-battery-misfire-singapore/): Porsche Cayenne hybrid with a blinking check-engine light. PIWIS found two faults: an ageing high-voltage battery and a misfire from worn coils and plugs.
- [Subaru Forester Knocking Over Bumps: How We Traced It to Worn Front Lower Arms](https://1car.sg/case-studies/subaru-forester-lower-arm-suspension-singapore/): Subaru Forester knocking over bumps. Both front lower arms and ball joints were worn. We replaced them as a pair and did a four-wheel alignment.
- [Volkswagen Passat With ABS, ESP, Reverse Camera and Steering Warnings: How Four Faulty Wheel-Speed Sensors Caused It All](https://1car.sg/case-studies/volkswagen-passat-abs-esp-warning-sensors-singapore/): VW Passat with ABS/ESP, camera, parking sensor and steering warnings at once. ODIS found four faulty ABS wheel-speed sensors. At least 6 months warranty.
- [Volkswagen Sharan Coolant Leak: How We Traced the Leaks and Renewed the Cooling System](https://1car.sg/case-studies/volkswagen-sharan-coolant-leak-radiator-singapore/): VW Sharan came in for servicing with coolant leaking across an ageing system. We replaced the radiator, hoses, expansion tank, thermostat and water pump.
- [Volvo V40 Slipping and Running Rough: How We Overhauled the Gearbox, Replaced the Injectors and Engine Mount](https://1car.sg/case-studies/volvo-v40-gearbox-overhaul-singapore/): Volvo V40 slipping and running rough. Worn gearbox, tired injectors and a perished engine mount. Full gearbox overhaul done. 2 year / 40,000km warranty.
- [Volvo XC40 Major Service at 90,000km: Brakes, Tyres and a Rear Tailgate That Would Not Hold](https://1car.sg/case-studies/volvo-xc40-major-service-brakes-singapore/): Volvo XC40 in for a major service at 90,000km. We replaced front and rear brakes, fitted new tyres and sorted the rear power tailgate. Itemised pricing.
- [Lexus GS300 Stuck in Gear 4 and Slipping: How We Overhauled the Gearbox and Replaced the Torque Converter](https://1car.sg/case-studies/lexus-gs300-gearbox-overhaul-torque-converter-singapore/): Lexus GS300 stuck in gear and slipping. We found worn clutch packs and a failed torque converter. Full overhaul done. 2 year / 40,000km warranty.
- [Mercedes C180 Major Service at 151,000km: Brakes, Spark Plugs and a Throttle Body Clean](https://1car.sg/case-studies/mercedes-c180-major-service-brakes-singapore/): Mercedes C180 in for a major service at 151,000km. We replaced front and rear brakes, changed worn spark plugs and cleaned the throttle body.
- [Mercedes GLB 200 Steering Vibration: How We Confirmed and Replaced the Steering Rack](https://1car.sg/case-studies/mercedes-glb200-steering-rack-replacement-singapore/): Mercedes GLB 200 with a vibration over 60km/h. We confirmed a steering rack fault, replaced the rack and road tested it. Checked before any parts changed.
- [Toyota Corolla Altis Gearbox Overhaul: A Full Rebuild Plus a Torn CV Joint and Oil Leak Sorted](https://1car.sg/case-studies/toyota-corolla-altis-gearbox-overhaul-singapore/): Toyota Corolla Altis gearbox playing up. We did a full gearbox overhaul, replaced a torn CV joint boot and fixed an oil leak. 2 year / 40,000km warranty.
- [Volvo V70 Aircon Kept Losing Its Cold: How We Traced It to a Contaminated System](https://1car.sg/case-studies/volvo-v70-aircon-compressor-condenser-singapore/): Volvo V70 aircon failed after a regas. We found a contaminated system, replaced the compressor and condenser and regassed it. At least 6 months warranty.
- [Bentley Mulsanne Boot Won't Lift: Motors and Tailgate Control Unit Replaced](https://1car.sg/case-studies/bentley-mulsanne-electric-boot-tailgate-motor-repair-singapore/): A Bentley Mulsanne powered boot would not lift. We replaced both boot motors, the tailgate control unit and worn rear dampers with original Bentley parts.
- [BMW 740Li Major Service and Brakes: A Flagship 7 Series Looked After Properly](https://1car.sg/case-studies/bmw-740li-major-service-brakes-singapore/): A BMW 740Li in for a major service and brakes. Oil and filters, throttle body clean, brake fluid, new pads and discs, plus a few extra items found.
- [Honda Odyssey Gearbox Overhaul: Worn Clutch Plates and an Oil Leak Fixed Properly](https://1car.sg/case-studies/honda-odyssey-gearbox-overhaul-singapore/): A Honda Odyssey with worn clutch plates and an internal oil leak. Full automatic gearbox overhaul with a 2 year / 40,000km warranty. It drove like new.
- [Mercedes-Benz CLA Losing Coolant and Seeping Oil: How We Found and Fixed It](https://1car.sg/case-studies/mercedes-benz-cla-coolant-leak-engine-oil-leak-singapore/): A Mercedes-Benz CLA losing coolant and seeping oil. We traced every leak, replaced the tank, hoses, thermostat and oil cooler, and road tested it.
- [Nissan Qashqai Gearbox Overhaul: Fixed, Then Backed by the Warranty](https://1car.sg/case-studies/nissan-qashqai-gearbox-overhaul-singapore/): A Nissan Qashqai jerking and shifting late. We did a full automatic gearbox overhaul with a reconditioned valve body, and honoured the warranty.
- [Porsche Panamera Aircon Blowing Warm: How We Traced It to a Failed Compressor and Condenser](https://1car.sg/case-studies/porsche-panamera-aircon-not-cold-compressor-singapore/): Porsche Panamera aircon blowing warm. We traced it to a failed compressor and condenser, replaced both and regassed it. At least a 6-month warranty.
- [Porsche Macan Oil Leak: Tracing It to the Sump Gasket and Level Sensor](https://1car.sg/case-studies/porsche-macan-engine-oil-leak-singapore/): Porsche Macan leaking oil. We traced it to the oil sump gasket and a failed oil level sensor, replaced both with original parts and road tested it.
- [Mazda 3 Automatic Gearbox Jerking: How We Diagnosed and Fixed It](https://1car.sg/case-studies/mazda-3-gearbox-jerking-overhaul-singapore/): Mazda 3 jerking when moving off. Burnt clutch plates and a stuck filter; full gearbox overhaul, $2,580, 2 year / 40,000km warranty.
- [Nissan Qashqai Lost Power: How We Found a Defective Valve and Fixed It](https://1car.sg/case-studies/nissan-qashqai-engine-top-overhaul-singapore/): A Nissan Qashqai lost power and ran rough. We opened the cylinder head, found a defective valve, and did a full engine top overhaul with new timing parts.
- [Audi A4 Coolant Leak with Tank Running Dry: How We Found and Fixed It](https://1car.sg/case-studies/audi-a4-coolant-leak-engine-oil-leak-repair-singapore/): Audi A4 leaking coolant and oil with the tank running dry. We pressure tested it, found multiple coolant and oil leaks, and fixed them all.
- [BMW 523i Timing Chain Rattle: Worn Cam Gear Found and Replaced](https://1car.sg/case-studies/bmw-523i-timing-chain-cam-gear-noise-singapore/): A BMW 523i had a rattle from the timing cover. We opened it up, found a worn cam gear, and replaced the timing set with original parts. The full job.
- [Volvo V60 Aircon Blowing Warm: How We Traced It to the Evaporator Coil](https://1car.sg/case-studies/volvo-v60-aircon-not-cold-evaporator-coil-singapore/): Volvo V60 aircon blowing warm. We traced it to the evaporator coil, and replaced the coil and expansion valve. At least a 6-month warranty.
- [Chevrolet Cruze Misfire: Fixed With an OEM Ignition Coil, Same Day](https://1car.sg/case-studies/chevrolet-cruze-misfire-ignition-coil-singapore/): Chevrolet Cruze stuttering and misfiring. We diagnosed a failing ignition coil and replaced it with an OEM part the same day. Here is the full job.
- [Ferrari 488 GTB Engine Overhaul: Coolant in the Oil, Put Right](https://1car.sg/case-studies/ferrari-488-engine-overhaul-singapore/): A Ferrari 488 GTB was overheating because coolant had entered the oil. We did a full engine overhaul with genuine parts and a 3 year / 60,000km warranty.
- [Audi A3 DSG Gearbox Warning and Jerky Shifts: How We Diagnosed and Fixed It](https://1car.sg/case-studies/audi-a3-dsg-mechatronics-fault-singapore/): An Audi A3 had a gearbox warning light and jerky DSG shifts. We traced it to a mechatronic unit fault and fitted a reconditioned unit, then road tested it.
- [Porsche PDK Gearbox Fault and Overheating: How We Diagnosed and Fixed It](https://1car.sg/case-studies/porsche-pdk-gearbox-overheating-valve-body-singapore/): Porsche PDK fault and overheating warning. We traced it from a leaking oil pan through the cooling path to the valve body, fixed with Porsche parts.

## Other pages
- [Homepage](https://1car.sg/): services overview and brand hub
- [Car repair costs in Singapore](https://1car.sg/car-repair-cost-singapore/): prices from documented workshop jobs, by category
- [Customer reviews](https://1car.sg/1-car-service-reviews/): 1,600+ genuine Google reviews, filterable by brand and service
- [Contact](https://1car.sg/contacts/): address, phone, WhatsApp and opening hours

## Sitemaps
- https://1car.sg/landing-pages-sitemap.xml
- https://1car.sg/case-studies-sitemap.xml