2018 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 89,131 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 111 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A5 S Line has covered 89,131 miles, around 17,800 more miles than is typical for its age. Priced at £11,494, it is advertised £63 below the AskCar estimate of £11,557. The AskCar estimate draws on 1,865 Audi A5 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 19 days ago, and its asking price has since fallen by £200. Its advertised mileage matches the government's MOT record. It is for sale at Car Vault in Welwyn Garden City. 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: £63 (under 1%) under the AskCar estimate of £11,557.

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

This 2018 Audi A5 has been on sale for at least 19 days.

Price history

AskCar first saw this advert on 16 October 2026 at £11,694. Its asking price is now £11,494, £200 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 16 October 2026: £11,694
• 21 October 2026: £11,494

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 16 February 2027.

It failed its MOT on 15 October 2026 (nearside front tyre tread depth below requirements of 1.6mm; offside front tyre tread depth below requirements of 1.6mm) and passed 1 day later, on 16 October 2026.

There were no advisories at the latest test.

Mileage at that test: 89,152 miles, which matches the advertised 89,131 miles.

Advertised mileage is about 17,800 miles higher 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 £18,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 S Line, 2.0 diesel coupe, white. Mileage: 90,000 miles. Price: £11,995, £501 more than this car. Dealer: MT Motors ( Gildersome ) in Leeds. AskCar page: https://askcar.co.uk/car/audi-a5-2018-b777347bc6d0
• 2018 Audi A5 S Line, 2.0 diesel coupe, white. Mileage: 83,000 miles. Price: £12,750, £1,256 more than this car. Dealer: MC Autosales in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-a5-2018-9fe1ae58271b
• 2018 Audi A5 S Line, 2.0 diesel coupe, grey. Mileage: 79,532 miles. Price: £12,500, £1,006 more than this car. Dealer: L T Car Sales in Leighton Buzzard. AskCar page: https://askcar.co.uk/car/audi-a5-2018-63607f45aef4

• The nearest: 2018 Audi A5 S Line, 2.0 diesel coupe, grey, 13 miles from this car. Mileage: 99,386 miles. Price: £10,350, £1,144 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/audi-a5-2018-ade58d8c0df7