2018 Audi A5 quattro — Full Specifications
As an Amazon Associate and CJ Affiliate and AWIN publisher we earn from qualifying purchases. Links below are affiliate links.
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 2018 Audi A5 quattro is a coupe powered by a 2L 4-cyl turbo premium gasoline engine. It returns around 32 mpg (UK) / 27 mpg (US EPA) combined. Owners often keep a Audi A5 quattro workshop manual to hand for servicing and repairs.
Compared with the 2017 Audi A5 quattro: Fuel economy is essentially unchanged at around 32 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 2L 4-cyl turbo |
|---|---|
| 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) | 12 cu ft (340 L) |
| Fuel Economy (UK) | 32 combined / 29 urban / 41 extra-urban mpg |
| Fuel Economy (US EPA) | 27 combined / 24 city / 34 highway mpg |
| CO₂ Emissions | 203 g/km |
| EPA Greenhouse Gas Score | 6 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,050 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2018 Audi A5 quattro, all with the 2L 4-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 |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo | Automatic (AM-S7) | All-Wheel Drive | 32 | 27 (24/34) | 203 | $3,050 |
| 2L 4-cyl turbo | Manual 6-spd | All-Wheel Drive | 32 | 27 (24/33) | 203 | $3,050 |
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 12 cubic feet (about 340 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2018 Audi A5 quattro
Running Costs: 2018 Audi A5 quattro
Covering around 8,000 miles a year in a 2018 Audi A5 quattro at 32 mpg combined, expect roughly 1,136 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,050 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.
2018 Audi A5 quattro 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 2018 Audi A5 quattro (as of 6 October 2026). Most affected areas: Air bags (3), Seats (1), Suspension (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Seats — campaign 21V874000, reported 10 November 2021. Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
- Air bags — campaign 19V547000, reported 24 July 2019. Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
- Suspension — campaign 18V893000, reported 17 December 2018. Risk: A loose front wheel may increasing the risk of a crash.
- Air bags — campaign 18V836000, reported 27 November 2018. Risk: If the air bag does not deploy correctly in the event of a crash, it can increase the risk of an injury.
Showing the 4 most recent of 6 campaigns.
Owners have filed 9 complaints with NHTSA about the 2018 Audi A5 quattro. The most-reported areas are Power train (2), Electrical system (2), Engine (2). That is close to the median of 10 complaints across the 12 Audi A5 quattro model years in our data.
Used-buyer checklist for the 2018 Audi A5 quattro
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Air bags (3 recall campaigns) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/recalls.
- Suspension (1 recall campaign · 1 owner complaint) — Listen for knocks over bumps and check tyre wear for signs of alignment problems.
- Seats (1 recall campaign) — Check seat adjusters, head restraints and seat-mounted sensors work, and confirm seat recalls were completed.
- Body structure (1 recall campaign) — Inspect for corrosion and for subframe or body-panel damage, especially underneath.
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 A5 quattro compare to similar coupes? For context, coupes in our database average around 25 mpg (UK) combined — this model's 32 mpg figure is 7 mpg better than that average. Its 203 g/km CO₂ figure is 75 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 2018 Audi A5 quattro's 32 mpg is 5 mpg above that make average. Its 203 g/km CO₂ figure is 48 g/km lower than the 251 g/km Audi average.
Of the 14 Audi A5 quattro model years we cover, the 2018 is the most economical on its best configuration (32 mpg UK combined). See every Audi A5 quattro 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 2018 Audi A5 quattro
Frequently Asked Questions
What engine does the 2018 Audi A5 quattro have?
It's fitted with a 2L 4-cyl turbo premium gasoline engine, paired with a automatic (am-s7) transmission.
What is the fuel economy of the 2018 Audi A5 quattro?
The most efficient configuration returns around 32 mpg (UK) combined, or 27 mpg on the US EPA cycle.
How much does the 2018 Audi A5 quattro cost to fuel per year?
The US EPA estimates about $3,050 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 2018 Audi A5 quattro have any recalls?
NHTSA lists 6 safety recall campaigns that include the 2018 Audi A5 quattro (as of 6 October 2026). Most affected areas: Air bags (3), Seats (1), Suspension (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 2018 Audi A5 quattro?
Among the 9 owner complaints filed with NHTSA, the most-reported areas are Power train (2 complaints), Electrical system (2 complaints), Engine (2 complaints). 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 2018 Audi A5 quattro have?
EPA measures interior passenger volume at 84 cubic feet (about 2,379 litres) and luggage volume at 12 cubic feet (about 340 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Audi A5 quattro's fuel economy good for a coupe?
Yes — it returns around 32 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track, making it one of the more efficient options in its class.