Quick answer: Oil and Filter Change on a 2012–2018 Audi A6 is rated Moderate and takes about 45-60 minutes. You'll need 6 tools for this job, and parts cost about $57. This guide walks you through the full job step by step, including the mistakes to avoid.
Oil spec
2.0L TDI (procedure shown): 5.5 qt / 3.0T gas: 7.2 qt — gas engines use VW 502.00 5W-40, verify capacity in your manual
Capacity 5.5 qt with filter Viscosity 5W-30 (alt: 5W-40) Spec VW 507.00 (TDI) / VW 502.00 (gas)
| Part Name |
Part Number |
Price |
Buy |
| 5W-30 full synthetic, VW 507.00 approved (5.5 quarts for 2.0 TDI) |
— |
$57.00 |
|
| Oil filter cartridge with O-ring |
— |
— |
|
| Drain plug washer |
— |
— |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Warm up
Warm the engine for 2-3 minutes — warm oil drains fast, but let a hot turbo or diesel cool slightly before you work. This guide is written around the TDI diesel, but gas-engine notes are included below. Park on level ground, set the parking brake, and chock the wheels. Gather a 32mm socket for the filter housing cap, a drain pan, a funnel, gloves, and the correct cartridge filter and oil for YOUR engine. Keep the 32mm socket handy throughout — you'll use it twice.
2
Loosen filter housing
Loosen the 32mm filter housing cap first. Don't remove it fully yet; just break it loose and let it drain while you move to the drain plug.
🔧 Mechanic's note — Tom Becker
Small thing, big difference: I just break the 32mm cap loose and let it drain while I move to the drain plug — I don't remove it fully yet.
3
Drain the oil
Remove the drain plug and let the oil pour into your pan until it slows to an occasional drip. On the TDI, you're draining about 5.5 quarts — have a pan with room to spare.
4
Replace the filter
Now fully remove the 32mm housing cap and pull the old cartridge element. Swap in the new element with fresh O-rings. Reseat the cap evenly and torque it to 25 Nm.
🔧 Mechanic's note — Tom Becker
Do yourself a favor like I do: I check the old O-ring isn't stuck in the housing bore — it's the classic source of a post-change weep.
5
Reinstall and lower
Reinstall the drain plug with a fresh seal, tightening by hand first to avoid cross-threading. Lower the car off the stands or ramps and wipe the housing and plug areas clean so any new leak will be obvious.
🔧 Mechanic's note — Tom Becker
Trust me on this one: Reinstall the drain plug with a fresh seal, tightening by hand first to avoid cross-threading.
6
Refill with the correct oil
Refill with the correct oil for your engine: the TDI takes 5.5 US quarts of 5W-30 meeting VW 507.00 — the low-ash spec the diesel particulate filter requires. If you have the 2.0 TFSI gas engine, it takes 5W-40 meeting VW 502.00 (filter cartridge 06L115562B). Pour through a funnel, adding the last quart slowly, and replace the oil cap.
7
Verify the level and check for leaks
Start the engine, idle a minute, and check for leaks at the housing and drain plug. Shut off, wait several minutes, and verify the oil level.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Using non-approved oil - the C7 A6 2.0 TDI needs VW 507.00 low-ash oil for the DPF.
- • Over-tightening the filter housing.
- • Not draining fully - the C7 holds significant oil.
- • Forgetting the service reset in the MMI.
