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: 49,975 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 349 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 177 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 49,975 miles, this 2018 Audi S5 has covered about 16,200 fewer miles than other 2018 Audi S5 cars. The dealer is asking £21,495, which is £10 below the AskCar estimate of £21,505. To work out the AskCar estimate, we analyse UK dealer adverts for 360 Audi S5 cars across different ages and specifications. We first saw this car advertised 63 days ago. Its asking price has since fallen by £2,505. The government's MOT record matches its advertised mileage. It is advertised by Acorn Specialist Cars in Stone. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £10 (under 1%) under the AskCar estimate of £21,505.

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 63 days.

Price history

AskCar first saw this advert on 3 September 2026 at £24,000. Its asking price is now £21,495, £2,505 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 3 September 2026: £24,000
• 20 September 2026: £22,999
• 29 September 2026: £22,500
• 18 October 2026: £21,995
• 20 October 2026: £21,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 10 November 2026.

It has had 7 MOTs. The latest, on 7 November 2025, passed.

Advisories at the latest test: front wipers smearing; offside rear lower coil spring mounting damaged but not seriously weakened coil spring cup starting to split; nearside front inner tyre worn close to legal limit/worn on edge; and 3 more.

Mileage at that test: 43,371 miles, which matches the advertised 49,975 miles.

Advertised mileage is about 16,200 miles lower than the median mileage of a 2018 Audi S5 on AskCar.