This Audi A6 came in with an oil leak. The fix was a new gearbox oil sump and fresh gearbox oil (ATF). On this car the subframe had to be removed to reach the sump, and that labour was in the quote from the start. Total: $970 before GST.
Job completed: September 2026
| Car | Audi A6 |
|---|---|
| Symptom | Oil leak under the car |
| Fault found | Gearbox oil sump leaking |
| Repair done | Removed the subframe for access; replaced the gearbox oil sump; replaced the gearbox oil (ATF) |
| Parts | New gearbox oil sump; fresh ATF |
| Time taken | Quoted at 1 to 1.5 days |
| Cost | $970 before GST: oil sump $350, ATF $240, labour $380 including subframe removal ($1,057.30 with GST). |
| Warranty | No warranty term for this job; every item quoted and approved first |
This Audi A6 had an oil leak. A leak under the car is easy to ignore. It can start as just a few drops on the carpark floor.
But an automatic gearbox needs the right level of oil to shift properly. Let it drip for months and that level keeps dropping.
This Audi A6 has an automatic gearbox, which sits under the car with its oil held in a sump at the bottom.
We do not publish the year, engine or gearbox type of this car because the job record does not state them. What the record does show is the part that mattered here: the gearbox oil sump.
Our team identified the gearbox oil sump as the source of the leak.
On this car, the subframe sits in the way of the sump. Our team told the owner up front that the subframe had to be removed to replace it, and put that labour on the quote as its own line. No surprise charge at collection.
A gearbox oil sump is a pan bolted to the bottom of the gearbox, sealed against the casing. It holds the gearbox oil. Heat cycles and age can let that seal area weep, and a sump can also be damaged from below.
The job record does not say why this sump failed, so we will not guess. What it shows is the fix: the leaking sump was replaced as a unit and the gearbox was refilled with fresh oil.
With the car on the hoist:
We also quoted an optional engine mount set at the same visit. The owner chose to do the sump and ATF only, and we did exactly that.
The final bill on this A6:
Total: $970 before GST, or $1,057.30 with GST.
The subframe labour is the line that catches owners out. If a quote covers only the sump and the oil, ask whether the subframe has to come down. On this car it did, and it was on our quote before any work started.
Look at where you park. A fresh oily patch under the middle of the car is worth a WhatsApp photo to us.
Gearbox oil is what lets an automatic gearbox shift properly, and a leak lowers the level over time. Ask for an underside check at your next service, especially on an older car.
This Audi A6 (gearbox oil sump replacement and ATF change) was handled at 1 Car Service, an independent workshop in Sin Ming AutoCity, Singapore. For Audi, we use dealer-level ODIS diagnostics. We hold a 4.9★ rating from 1,803+ Google reviews.
WhatsApp us your Audi model. We put the car on the hoist, find where the leak is coming from, and quote every part and every labour step before any work starts.
On this A6 it was $970 before GST ($1,057.30 with GST): $350 for the sump, $240 for the ATF and $380 labour, which included removing the subframe. Your figure depends on your car, so we inspect and quote every line first.
For a leak like this, the job is a known set of parts and labour. We quote each line before we start, including access work like subframe removal, so you can compare it with any other quote line by line.
This one was quoted at 1 to 1.5 days, including removing and refitting the subframe. We confirm the timeline for your car when you book.
Yes. We use ODIS, the dealer-level diagnostic system for Audi and Volkswagen.
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