Gearbox and Transmission Repair Case Studies

Every case below is a real gearbox job from our Sin Ming workshop, written up from the job records: what the owner reported, what the diagnosis or strip-down found, what we replaced and, where the job records allow it, what it cost. Conventional automatics, DSG and PDK dual-clutch units, CVTs, torque converters, valve bodies and mechatronic units all appear here.

Gearbox diagnosis is free. If your car is showing any of the symptoms below, WhatsApp us what the gearbox is doing and we will tell you what it likely needs before you spend anything.

25 documented gearbox jobs on this page, 13 with costs recorded. Every case states exactly what its figure covered, and your car is always quoted after diagnosis.

Symptoms worth checking

Jerking or shuddering on gear changes, especially low gears
Slipping: revs rise but the car does not pull
Stuck in gear, or reverse refusing to engage
Noise or shudder from the torque converter area
Gearbox warning light or limp mode
Leaking transmission fluid, or fluid that smells burnt

The documented jobs

The services behind these repairs

Full rebuilds are done as our gearbox overhaul service, backed by our 2 year / 40,000km warranty, the longest gearbox warranty in Singapore. Component-level work is covered on the torque converter, valve body and mechatronic unit pages (sub-assembly repairs quoted on their own scope, outside the whole-gearbox warranty). Continental owners can start from continental gearbox repair, Japanese makes from Japanese gearbox overhaul. Published prices from documented jobs sit in the car repair cost database.

Gearbox and Transmission Repair Case Studies

Symptoms worth checking

The documented jobs

Audi Mechatronic Unit Replacement Singapore: Reconditioned Unit, Same Day

BMW 5 Series Low Coolant Warning and Gearbox Service in Singapore: Both Jobs Done in One Visit

Honda Freed Major Service in Singapore: Throttle Body, Filters, Spark Plugs and an Oil Leak Found

Subaru Automatic Gearbox Overhaul in Singapore: Fully Stripped, Rebuilt and Warranted

BMW 218 Gearbox Overhaul: Drivetrain Warning, Burnt Clutch Pack Found, 2 Year / 40,000km Warranty

VW Golf GTI DSG Gearbox Overhaul in Singapore: The Cracked Shift Bracket Behind a Mechatronic Fault

Audi A6 Gearbox Oil Sump Leak: New Sump and Fresh ATF, Quoted in Full

Mercedes-Benz Suspension Overhaul and Oil Pump Solenoid Fault: All Sorted for $6,200 Nett

Mercedes-Benz W211 E230 Gearbox Overhaul: Jerking Fixed, Drives Like New

Porsche Cayman 987 Gearbox Coolant Contamination: Three Flushes Later, a Full Overhaul

BMW X1 Gearbox Overhaul and Torque Converter Replacement: $3,400 Total, 2 Year / 40,000km Warranty

Hyundai Ioniq Electric Gearbox Overhaul: The Noise Was the Gearbox, Not the Wheel Bearings

MINI Cooper S Engine Overhaul and Gearbox Overhaul: How We Fixed Both at the Same Time

Skoda Superb DSG Gearbox Overhaul for Jerky Gear Changes

Mazda 3 Gearbox Cannot Engage: Cracked Internal Part, Full Overhaul Done

Mitsubishi Attrage CVT Gearbox Overhaul: Valve Body Replaced and Engine Mounts Sorted

VW Passat DSG Mechatronic, Engine Mounts and Coolant Hose: A Full Sort-Out in Singapore

Volvo V40 With a Check Engine Light: How We Overhauled the Gearbox, Replaced the Injectors and Engine Mount

Lexus GS300 Gear Indicator Stuck at 4 and Slipping: How We Overhauled the Gearbox and Replaced the Torque Converter

Toyota Corolla Altis Gearbox Overhaul: A Full Rebuild Plus a CV Joint and an Oil Leak Repair

Honda Odyssey Gearbox Overhaul: Done Before an Oil Leak Could Burn the Clutch

Nissan Qashqai Gearbox Overhaul: Fixed, Then Backed by the Warranty

Mazda 3 Automatic Gearbox Slipping: What We Found and How We Fixed It

Audi A3 DSG Gearbox Malfunction Warning: How We Diagnosed and Fixed It

Porsche PDK Gearbox Fault and Overheating: How We Diagnosed and Fixed It

The services behind these repairs