2018 Audi S5 3.0

Price: £23,945. Fair price: £88 (under 1%) over the AskCar estimate of £23,857, our expected asking price for this car from its model, age, mileage and specification, drawing on 354 priced Audi S5 adverts on AskCar as of 2 November 2026.

AskCar lists 366 used Audi S5 from 294 UK dealerships, as of 2 November 2026.

Overview

  • Make: Audi
  • Model: S5
  • Version: 3.0 V6 TSI Tiptronic 4WD Euro 6 5dr (349 bhp)
  • Year: 2018
  • Mileage: 40,000 miles
  • Fuel: Petrol
  • Body: Hatchback, 5 doors, 5 seats
  • Engine: 3.0 litres, 349 bhp
  • Gearbox: Automatic (Tiptronic)
  • Drive: Four-wheel drive
  • Colour: Black
  • CO2: 174 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi S5 is advertised with 40,000 miles, approximately 26,100 below the typical mileage for its age. The dealer is asking £23,945, which is £88 above the AskCar estimate of £23,857. To work out the AskCar estimate, we analyse UK dealer adverts for 354 Audi S5 cars across different ages and specifications. This car was first seen in our listings data 35 days ago. You can find this car at Morgan Cars and Commercials in Ballyclare. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £88 (under 1%) over the AskCar estimate of £23,857.

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 354 priced Audi S5 adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi S5 with the 3.0 petrol engine is typically advertised at £20,500: the median of the 57 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi S5 has been on sale for at least 35 days.

Price history

AskCar first saw this advert on 28 September 2026 at £23,745. Its asking price is now £23,945, £200 more.

Price changes recorded:

  • 28 September 2026: £23,745
  • 25 October 2026: £23,945

Mileage and MOT

Advertised mileage is about 26,100 miles lower 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

4 photos of this car are on its AskCar page.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.