2018 Audi A6 Oil Type & Capacity: 5W-40 (5.0 quarts)
The 2018 Audi A6 takes 5W-40 motor oil — 5.0 quarts with a filter change, per the factory service manual.
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Premium | Castrol EDGE Professional SAE 5W-40. VW 502 00 | 5.00 QTS. | — | Refer to Technical Bulletin 2010043 for engine oils meeting the required Audi oil quality standards. Part numbers are for reference only. Approximate capacity. |
| Premium Plus | Castrol EDGE Professional SAE 5W-40. VW 502 00 | 5.00 QTS. | — | Refer to Technical Bulletin 2010043 for engine oils meeting the required Audi oil quality standards. Part numbers are for reference only. Approximate capacity. |
| Sport | Castrol EDGE Professional SAE 5W-40. VW 502 00 | 5.00 QTS. | — | Refer to Technical Bulletin 2010043 for engine oils meeting the required Audi oil quality standards. Part numbers are for reference only. Approximate capacity. |
More factory specs & repair guides for your A6
🛞 2018 Audi A6 Tire Size & Pressure →🌧️ 2018 Audi A6 Wiper Blade Sizes →💡 2018 Audi A6 Light Bulb Sizes →📖 2018 Audi A6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.5 quarts (9.93 L). Part No. G A13 A8J M1. Part numbers are for reference only. Approximate capacity.
Frequently asked questions
What type of oil does a 2018 Audi A6 take?
The 2018 Audi A6 takes 5W-40 motor oil (Castrol EDGE Professional SAE 5W-40. VW 502 00), per the factory service manual.
What is the oil capacity of a 2018 Audi A6?
The 2018 Audi A6 oil capacity is 5.0 quarts with a filter change.
How often should I change the oil in my 2018 Audi A6?
Most 2018 Audi A6 owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Audi recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Audi A6?
Yes. 5W-40 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Audi A6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.