2018 Audi S5 3.0 TFSI V6

Overview

• Make: Audi
• Model: S5
• Version: 3.0 TFSI V6 Cabriolet Tiptronic 4WD Euro 6 (s/s) 2dr (349 bhp)
• Year: 2018
• Mileage: 54,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 349 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 177 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi S5 has covered 54,000 miles, around 12,600 fewer miles than is typical for its age. Its asking price of £17,995 is £3,072 below the AskCar estimate of £21,067. The AskCar estimate uses 361 UK dealer adverts for the Audi S5, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 52 days ago, the asking price has dropped by £3,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Dorset Vehicle Sales in Wimborne. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Good value: £3,072 (14%) under the AskCar estimate of £21,067.

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 361 priced Audi S5 adverts across different ages and specifications, as of 4 November 2026.

A 2018 Audi S5 with the 3.0 petrol engine is typically advertised at £20,200: the median of the 61 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Audi S5 has been on sale for at least 52 days.

Price history

AskCar first saw this advert on 13 September 2026 at £20,995. Its asking price is now £17,995, £3,000 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 13 September 2026: £20,995
• 27 September 2026: £19,995
• 1 October 2026: £18,995
• 5 October 2026: £17,995
• 11 October 2026: £18,995
• 28 October 2026: £17,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 12 September 2027.

It has had 8 MOTs. The latest, on 8 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,611 miles, which matches the advertised 54,000 miles.

Advertised mileage is about 12,600 miles lower than the median mileage of a 2018 Audi S5 on AskCar.