2018 Audi A5 2.0 TDI ultra S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI ultra S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (187 bhp)
• Year: 2018
• Mileage: 55,129 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Red
• CO2: 112 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 55,129 miles on the clock, this 2018 Audi A5 S Line has done roughly 15,600 fewer miles than a typical 2018 Audi A5. Its asking price of £15,799 is £737 below the AskCar estimate of £16,536. The AskCar estimate draws on 1,877 Audi A5 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Lookers in Belfast. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £737 (4%) under the AskCar estimate of £16,536.

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 1,877 priced Audi A5 adverts across different ages and specifications, as of 6 November 2026.

A 2018 Audi A5 with the 2.0 diesel engine is typically advertised at £13,500: the median of the 125 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2018 Audi A5 advertised today. About half of 2018 Audi A5 cars are gone from sale within a month of being advertised: 108 of the 209 first advertised between 7 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £15,799. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 4 July 2027.

It failed its MOT on 8 June 2026 (offside rear coil spring fractured or broken) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 53,188 miles, which matches the advertised 55,129 miles.

Advertised mileage is about 15,600 miles lower than the median mileage of a 2018 Audi A5 on AskCar.

Similar cars

16 other 2018 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £11,900 to £19,490, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 S Line, 2.0 diesel hatchback, grey. Mileage: 53,000 miles. Price: £15,000, £799 less than this car. Dealer: Alistair Buchan in East Wemyss. AskCar page: https://askcar.co.uk/car/audi-a5-2018-91c9dc713a06
• 2018 Audi A5 S Line, 2.0 diesel hatchback, silver. Mileage: 61,276 miles. Price: £16,298, £499 more than this car. Dealer: Arnold Clark Liverpool Motorstore / MG / Chery in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a5-2018-2a3b16e55f40
• 2018 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 61,766 miles. Price: £14,795, £1,004 less than this car. Dealer: G H Motors (Mansfield) in Mansfield. AskCar page: https://askcar.co.uk/car/audi-a5-2018-e30129d78065

• The nearest: 2018 Audi A5 S Line, 2.0 diesel hatchback, black, 15 miles from this car. Mileage: 89,400 miles. Price: £14,450, £1,349 less than this car. Dealer: Jack Reid Cars in Carrickfergus. AskCar page: https://askcar.co.uk/car/audi-a5-2018-620bebb84a45