2018 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI S Line S tronic 4WD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 23,000 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: White
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 23,000 miles, this 2018 Audi A5 S Line has covered about 48,400 fewer miles than other 2018 Audi A5 cars. The dealer is asking £18,999, which is £32 above the AskCar estimate of £18,967. To work out the AskCar estimate, we analyse UK dealer adverts for 1,865 Audi A5 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 160 days, and its asking price has been cut by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at AB Car Sales in Gunnislake. 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

Fair price: £32 (under 1%) over the AskCar estimate of £18,967.

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 1,865 priced Audi A5 adverts across different ages and specifications, as of 4 November 2026.

A 2018 Audi A5 with the 2.0 diesel engine is typically advertised at £13,500: the median of the 121 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2018 Audi A5 has been on sale for at least 160 days, and its asking price has been cut by £1,000. About half of 2018 Audi A5 cars are gone from sale within a month of being advertised: 104 of the 204 first advertised between 7 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £19,999. Its asking price is now £18,999, £1,000 less. The latest price cut was seen on 5 October 2026.

Price changes recorded:

• 28 May 2026: £19,999
• 5 October 2026: £18,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 23 November 2026.

It failed its MOT on 20 November 2025 (electronic stability control warning lamp indicates a fault brake servo restricted) and passed 4 days later, on 24 November 2025.

There were no advisories at the latest test.

Mileage at that test: 23,247 miles, which matches the advertised 23,000 miles.

Advertised mileage is about 48,400 miles lower than the median mileage of a 2018 Audi A5 on AskCar.

Similar cars

17 other 2018 Audi A5 S Line 2.0 diesel automatic coupes are for sale at UK dealers, from £9,499 to £16,590, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 S Line, 2.0 diesel coupe, red. Mileage: 29,250 miles. Price: £16,590, £2,409 less than this car. Dealer: Select Car Superstore in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a5-2018-abcb56dff5c6
• 2018 Audi A5 S Line, 2.0 diesel coupe, silver. Mileage: 51,056 miles. Price: £14,995, £4,004 less than this car. Dealer: Carzy in Manchester. AskCar page: https://askcar.co.uk/car/audi-a5-2018-61ea0ddd496f
• 2018 Audi A5 S Line, 2.0 diesel coupe, black. Mileage: 58,700 miles. Price: £13,150, £5,849 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a5-2018-8433c8946770

• The nearest: 2018 Audi A5 S Line, 2.0 diesel coupe, grey, 182 miles from this car. Mileage: 99,072 miles. Price: £11,695, £7,304 less than this car. Dealer: Switch Cars in Southall. AskCar page: https://askcar.co.uk/car/audi-a5-2018-292efd2650c1