2020 Audi S6 — Full Specifications
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Running gear matters most — before anything else, UK: check tyre prices at TirendoUS: check wheel & tyre prices at WheelHero for this car's fitment.
The 2020 Audi S6 is a saloon/sedan powered by a 2.9L 6-cyl turbo premium gasoline engine. It returns around 26 mpg (UK) / 22 mpg (US EPA) combined. Owners often keep a Audi S6 workshop manual to hand for servicing and repairs.
Full Specifications
| Engine | 2.9L 6-cyl turbo |
|---|---|
| Transmission | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Hybrid |
| Drive | All-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 98 cu ft (2,775 L) |
| Luggage Volume (EPA) | 16 cu ft (453 L) |
| Fuel Economy (UK) | 26 combined / 22 urban / 34 extra-urban mpg |
| Fuel Economy (US EPA) | 22 combined / 18 city / 28 highway mpg |
| CO₂ Emissions | 255 g/km |
| EPA Greenhouse Gas Score | 4 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,750 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 1 configuration for the 2020 Audi S6, all with the 2.9L 6-cyl turbo engine. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2.9L 6-cyl turbo (Hybrid) | Automatic (S8) | All-Wheel Drive | 26 | 22 (18/28) | 255 | $3,750 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 98 cubic feet (about 2,775 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2020 Audi S6
Running Costs: 2020 Audi S6
Covering around 8,000 miles a year in a 2020 Audi S6 at 26 mpg combined, expect roughly 1,399 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,750 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2020 Audi S6 Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists 6 safety recall campaigns that include the 2020 Audi S6 (as of 6 October 2026). Most affected areas: Electrical system (2), Back over prevention (1), Tires (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Back over prevention — campaign 25V900000, reported 19 December 2025. Risk: A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.
- Electrical system — campaign 22V861000, reported 21 November 2022. Risk: A gateway control module shutdown will suddenly reduce engine power, increasing the risk of a crash.
- Electrical system — campaign 22V155000, reported 14 March 2022. Risk: An inaccurate fuel reading may cause an engine stall due to lack of fuel, increasing the risk of a crash.
- Tires — campaign 22V034000, reported 26 January 2022. Risk: Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
Showing the 4 most recent of 6 campaigns.
Owners have filed 2 complaints with NHTSA about the 2020 Audi S6. The most-reported areas are Electrical system (2), Power train (1), Engine (1).
Used-buyer checklist for the 2020 Audi S6
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Electrical system (2 recall campaigns · 2 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Tyres (1 recall campaign) — Check tyre age and wear and ask about any tyre recalls.
- Suspension (1 recall campaign) — Listen for knocks over bumps and check tyre wear for signs of alignment problems.
- Transmission & drivetrain (1 owner complaint) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
At 26 mpg (UK) combined it sits close to the 27 mpg average for Audi models in our database.
Of the 14 Audi S6 model years we cover, the 2020 is the most economical on its best configuration (26 mpg UK combined). See every Audi S6 year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2020 Audi S6
Frequently Asked Questions
What engine does the 2020 Audi S6 have?
It's fitted with a 2.9L 6-cyl turbo premium gasoline engine, paired with a automatic (s8) transmission.
What is the fuel economy of the 2020 Audi S6?
The most efficient configuration returns around 26 mpg (UK) combined, or 22 mpg on the US EPA cycle.
How much does the 2020 Audi S6 cost to fuel per year?
The US EPA estimates about $3,750 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2020 Audi S6 have any recalls?
NHTSA lists 6 safety recall campaigns that include the 2020 Audi S6 (as of 6 October 2026). Most affected areas: Electrical system (2), Back over prevention (1), Tires (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2020 Audi S6?
Among the 2 owner complaints filed with NHTSA, the most-reported areas are Electrical system (2 complaints), Power train (1 complaint), Engine (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2020 Audi S6 have?
EPA measures interior passenger volume at 98 cubic feet (about 2,775 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.