2015 Audi S5 — Full Specifications
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The 2015 Audi S5 is a coupe powered by a 3L 6-cyl supercharged premium gasoline engine. Its most fuel-efficient configuration returns around 25 mpg (UK) / 21 mpg (US EPA) combined, with 24–25 mpg (UK) across all configurations. Owners often keep a Audi S5 workshop manual to hand for servicing and repairs.
Compared with the 2014 Audi S5: Fuel economy is essentially unchanged at around 25 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 3L 6-cyl supercharged |
|---|---|
| Transmission | Automatic (AM-S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | Coupe |
| Passenger Volume (EPA) | 84 cu ft (2,379 L) |
| Luggage Volume (EPA) | 13 cu ft (368 L) |
| Fuel Economy (UK) | 25 combined / 22 urban / 34 extra-urban mpg |
| Fuel Economy (US EPA) | 21 combined / 18 city / 28 highway mpg |
| CO₂ Emissions | 257 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,900 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2015 Audi S5, all with the 3L 6-cyl supercharged engine. Combined fuel economy ranges from 20 to 21 mpg (US), or 24 to 25 mpg (UK), depending on engine, transmission and drive. 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 |
|---|---|---|---|---|---|---|
| 3L 6-cyl supercharged | Automatic (AM-S7) | All-Wheel Drive | 25 | 21 (18/28) | 257 | $3,900 |
| 3L 6-cyl supercharged | Manual 6-spd | All-Wheel Drive | 24 | 20 (17/26) | 273 | $4,100 |
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 84 cubic feet (about 2,379 litres) and luggage volume at 13 cubic feet (about 368 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2015 Audi S5
Running Costs: 2015 Audi S5
Covering around 8,000 miles a year in a 2015 Audi S5 at 25 mpg combined, expect roughly 1,455 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,900 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.
2015 Audi S5 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 no safety recall campaigns for the 2015 Audi S5 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 2 complaints with NHTSA about the 2015 Audi S5. The most-reported areas are Fuel/propulsion system (1), Engine (1), Lane departure (1).
Used-buyer checklist for the 2015 Audi S5
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Fuel system (1 owner complaint) — Ask whether any fuel-pump or fuel-system recalls were completed, and watch for hard starting or stalling.
- Engine (1 owner complaint) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Steering (1 owner complaint) — Check for play, noise or heavy steering, and ask whether any steering recall work was done.
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
How does the Audi S5 compare to similar coupes? Coupes in our database average around 25 mpg (UK) combined — this model sits close to that average, within 0 mpg. Its 257 g/km CO₂ figure is 21 g/km lower than the 278 g/km average for coupes on this site. This comparison is based on 1072 coupes in our dataset.
Audi models in our database average about 27 mpg (UK) combined on their most efficient configuration; the 2015 Audi S5's 25 mpg is 2 mpg below that make average.
Of the 17 Audi S5 model years we cover, the 2015 ranks 10th for combined fuel economy on its best configuration (25 mpg UK combined, against a high of 29 mpg). See every Audi S5 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 2015 Audi S5
Frequently Asked Questions
What engine does the 2015 Audi S5 have?
It's fitted with a 3L 6-cyl supercharged premium gasoline engine, paired with a automatic (am-s7) transmission.
What is the fuel economy of the 2015 Audi S5?
The most efficient configuration returns around 25 mpg (UK) combined, or 21 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 24 to 25 mpg.
How much does the 2015 Audi S5 cost to fuel per year?
The US EPA estimates about $3,900 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 2015 Audi S5 have any recalls?
NHTSA lists no safety recall campaigns for the 2015 Audi S5 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2015 Audi S5?
Among the 2 owner complaints filed with NHTSA, the most-reported areas are Fuel/propulsion system (1 complaint), Engine (1 complaint), Lane departure (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 2015 Audi S5 have?
EPA measures interior passenger volume at 84 cubic feet (about 2,379 litres) and luggage volume at 13 cubic feet (about 368 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Audi S5's fuel economy good for a coupe?
It returns around 25 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track.