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.

16 documented gearbox jobs on this page, 12 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

Porsche Cayman 987 Gearbox Coolant Contamination: Why Flushing Failed and What Fixed It

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

Hyundai Ioniq Electric Gearbox Overhaul: How We Restored Drive to an EV with a Failing Reduction Gearbox

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

Skoda Superb DSG Gearbox Overhaul: Full Rebuild and Mechatronic Unit Replacement Done Together

Mazda 3 Gearbox Cannot Engage: Internal Mechanism Stuck, 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 Slipping and Running Rough: How We Overhauled the Gearbox, Replaced the Injectors and Engine Mount

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

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

Honda Odyssey Gearbox Overhaul: Worn Clutch Plates and an Oil Leak Fixed Properly

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

Mazda 3 Automatic Gearbox Jerking: How We Diagnosed and Fixed It

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

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

The services behind these repairs