2018 Audi S5 3.0 TFSI V6
Price: £21,950. Fair price: £622 (2%) over the AskCar estimate of £21,328, our expected asking price for this car from its model, age, mileage and specification, drawing on 360 priced Audi S5 adverts on AskCar as of 5 November 2026.
AskCar lists 373 used Audi S5 from 298 UK dealerships, as of 5 November 2026.
Overview
- Make: Audi
- Model: S5
- Version: 3.0 TFSI V6 Sportback Tiptronic 4WD Euro 6 (s/s) 5dr (349 bhp)
- Year: 2018
- Mileage: 68,300 miles
- Fuel: Petrol
- Body: Hatchback, 5 doors, 4 seats
- Engine: 3.0 litres, 349 bhp
- Gearbox: Automatic (Tiptronic)
- Drive: Four-wheel drive
- Colour: Silver
- CO2: 174 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 68,300 miles on the clock, this 2018 Audi S5 has done roughly 2,200 more miles than a typical 2018 Audi S5. The dealer is asking £21,950, which is £622 above the AskCar estimate of £21,328. To work out the AskCar estimate, we analyse UK dealer adverts for 360 Audi S5 cars across different ages and specifications. Since we first spotted the advert 58 days ago, the asking price has dropped by £2,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Fontain.Co.Uk in Iver. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Fair price: £622 (2%) over the AskCar estimate of £21,328.
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 360 priced Audi S5 adverts across different ages and specifications, as of 5 November 2026.
A 2018 Audi S5 with the 3.0 petrol engine is typically advertised at £20,400: the median of the 61 for sale on AskCar, as of 5 November 2026.
Time on sale
This 2018 Audi S5 has been on sale for at least 58 days.
Price history
AskCar first saw this advert on 8 September 2026 at £23,950. Its asking price is now £21,950, £2,000 less. The latest price cut was seen on 29 October 2026.
Price changes recorded:
- 8 September 2026: £23,950
- 9 October 2026: £23,695
- 18 October 2026: £22,950
- 24 October 2026: £22,695
- 29 October 2026: £21,950
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 16 April 2027.
It has had 7 MOTs. The latest, on 17 April 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 66,483 miles, which matches the advertised 68,300 miles.
Advertised mileage is about 2,200 miles higher than the median mileage of a 2018 Audi S5 on AskCar.
Browse all Audi S5 cars for sale · 2018 Audi S5 price guide
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Photos
44 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.