2021 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (161 bhp)
• Year: 2021
• Mileage: 64,000 miles
• Fuel: Diesel, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 161 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 64,000 miles, this 2021 Audi A5 S Line has covered about 15,200 more miles than other 2021 Audi A5 cars. The dealer is asking £18,799, which is £159 above the AskCar estimate of £18,640. To work out the AskCar estimate, we analyse UK dealer adverts for 1,849 Audi A5 cars across different ages and specifications. We have tracked this advert today. The latest recorded MOT expiry date is 23 September 2026, which has passed. Confirm its status with the dealer. Its advertised mileage matches the government's MOT record. The seller is AB Car Sales, based in Gunnislake. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £159 (under 1%) over the AskCar estimate of £18,640.

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 1,849 priced Audi A5 adverts across different ages and specifications, as of 10 November 2026.

A 2021 Audi A5 with the 2.0 diesel engine is typically advertised at £19,800: the median of the 135 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2021 Audi A5 advertised today. About half of 2021 Audi A5 cars are gone from sale within a month of being advertised: 93 of the 179 first advertised between 11 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £18,799. 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 10 November 2026: the latest record we hold ran out on 23 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 22 September 2025, passed.

Advisories at the latest test: rear child seat fitted not allowing full inspection of adult belt both sides; rear brake pad(s) wearing thin; front tyre worn close to legal limit/worn on edge inner edges, both sides.

Mileage at that test: 61,292 miles, which matches the advertised 64,000 miles.

Advertised mileage is about 15,200 miles higher than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

34 other 2021 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £15,490 to £23,990, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, grey. Mileage: 64,000 miles. Price: £18,750, the same price as this car. Dealer: United Car Sales in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a5-2021-8107d34f4fc4
• 2021 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 66,000 miles. Price: £19,395, £596 more than this car. Dealer: Hynes Motors in Newry. AskCar page: https://askcar.co.uk/car/audi-a5-2021-fe96688d221a
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 60,266 miles. Price: £18,498, £301 less than this car. Dealer: CarSupermarket.com Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a5-2021-2b6a328b3f87

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, grey, 12 miles from this car. Mileage: 53,000 miles. Price: £20,000, £1,201 more than this car. Dealer: Plympton Car Centre (Plymouth) in Plympton. AskCar page: https://askcar.co.uk/car/audi-a5-2021-bbc648e4f41c