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: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A5 S Line has covered 64,000 miles, around 13,000 more miles than is typical for its age. Priced at £18,950, it is advertised £286 above the AskCar estimate of £18,664. The AskCar estimate uses UK dealer asking prices, including 1,830 Audi A5 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 80 days ago. Its asking price has since fallen by £1,540. Our latest MOT record expired on 9 September 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is United Car Sales, based in Sheffield. 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: £286 (1%) over the AskCar estimate of £18,664.

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 1,830 priced Audi A5 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A5 with the 2.0 diesel engine is typically advertised at £19,700: the median of the 119 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A5 has been on sale for at least 80 days.

Price history

AskCar first saw this advert on 14 August 2026 at £20,490. Its asking price is now £18,950, £1,540 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 14 August 2026: £20,490
• 29 August 2026: £19,995
• 4 September 2026: £19,790
• 12 September 2026: £19,650
• 3 October 2026: £19,490
• 15 October 2026: £18,990
• 22 October 2026: £18,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 9 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 28 August 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 59,559 miles, which matches the advertised 64,000 miles.

Advertised mileage is about 13,000 miles higher than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

30 other 2021 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £13,995 to £22,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, grey. Mileage: 68,000 miles. Price: £18,000, £950 less than this car. Dealer: John Clark Select Edinburgh in Edinburgh. AskCar page: https://askcar.co.uk/car/audi-a5-2021-38b6413ee518
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 68,000 miles. Price: £18,989, the same price as this car. Dealer: Zreik Motors in UB6 7DE. AskCar page: https://askcar.co.uk/car/audi-a5-2021-5ecf6b7ba7b7
• 2021 Audi A5 S Line, 2.0 diesel hatchback, grey. Mileage: 60,000 miles. Price: £18,989, the same price as this car. Dealer: Bluehawk Automotive in Hounslow. AskCar page: https://askcar.co.uk/car/audi-a5-2021-ae384bc46f1d

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, white, 25 miles from this car. Mileage: 49,578 miles. Price: £19,999, £1,049 more than this car. Dealer: Bridgend Motor Group in Morley. AskCar page: https://askcar.co.uk/car/audi-a5-2021-0cb292798da0