2018 Audi S5 3.0 TFSI V6
Version: 3.0 TFSI V6 Cabriolet Tiptronic 4WD Euro 6 (s/s) 2dr (349 bhp)
Price: £19,995. Fair price: £448 (2%) under the AskCar estimate of £20,443, our expected asking price for this car from its model, age, mileage and specification, drawing on 340 priced Audi S5 adverts on AskCar as of 30 October 2026.
AskCar lists 351 used Audi S5 from 282 UK dealerships, as of 30 October 2026.
Overview
- Make
- Audi
- Model
- S5
- Version
- 3.0 TFSI V6 Cabriolet Tiptronic 4WD Euro 6 (s/s) 2dr (349 bhp)
- Mileage
- 58,512 miles
- Year
- 2018
- Fuel type
- Petrol
- Body type
- Convertible
- Engine
- 3.0 L
- Gearbox
- Automatic
- Power
- 349 bhp
- Seats
- 4
- CO2
- 177 g/km
- Colour
- White
- Doors
- 2
- Driven wheels
- Four Wheel Drive
- Gearbox version
- Tiptronic
- Engine badge
- TFSI V6
- Emissions standard
- Euro 6
About this car
This 2018 Audi S5 is advertised with 58,512 miles, approximately 7,500 below the typical mileage for its age. Priced at £19,995, it is advertised £448 below the AskCar estimate of £20,443. The AskCar estimate uses 340 UK dealer adverts for the Audi S5, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data today. Its recorded MOT is valid until 14 December 2026, and its advertised mileage is consistent with the latest MOT reading. The seller is Grainger Motor Group Mantles BYD Royston, based in Royston.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 30 October 2026.
| Date observed | Asking price |
|---|---|
| 30 October 2026 | £19,995 |
Price and mileage comparison
Fair price: £448 (2%) under the AskCar estimate of £20,443.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 340 priced Audi S5 adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 7,500 miles lower than the median mileage of a 2018 Audi S5 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 14 December 2026. 49,877 miles at the last test.
Other matching cars
55 other 2018 Audi S5 automatic petrol cars are for sale at UK dealers from £14,990 to £26,950, as of 30 October 2026.
The 5 cheapest:
- 2018 Audi S5. Price: £14,990. Mileage: 101,358 miles. Dealer: CMC Autos in Darlington. AskCar page: https://askcar.co.uk/car/audi-s5-2018-88b069a966ff
- 2018 Audi S5. Price: £15,500. Mileage: 107,000 miles. Dealer: Drive Time Specialist Cars in West Bromwich. AskCar page: https://askcar.co.uk/car/audi-s5-2018-9ec85d4fb1ff
- 2018 Audi S5. Price: £15,995. Mileage: 104,147 miles. Dealer: The Car Lounge in Manchester. AskCar page: https://askcar.co.uk/car/audi-s5-2018-949b34b610a1
- 2018 Audi S5. Price: £16,000. Mileage: 60,000 miles. Dealer: Nationwide Car Sales in Warrington. AskCar page: https://askcar.co.uk/car/audi-s5-2018-41d859e24ce8
- 2018 Audi S5. Price: £16,495. Mileage: 92,169 miles. Dealer: Crompton Way Motors in Bolton. AskCar page: https://askcar.co.uk/car/audi-s5-2018-ae63c62912bd
The 55 matching cars have covered 31,337 to 107,000 miles, compared with 58,512 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Audi S5 cars for sale · 2018 Audi S5 price guide
More like this
Photos
40 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.