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: 43,000 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 43,000 miles. Its asking price of £20,975 is £125 below the AskCar estimate of £21,100. The AskCar estimate draws on 1,868 Audi A5 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 30 days. The last MOT shows 43,905 miles, more than the advert. This is worth checking with the dealer. Its recorded MOT is valid until 9 September 2027. The seller is Junction 17 Cars Limited t/a Junction 17 Cars (Grantham), based in Grantham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £125 (under 1%) under the AskCar estimate of £21,100.

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 1,868 priced Audi A5 adverts across different ages and specifications, as of 5 November 2026.

A 2021 Audi A5 with the 2.0 diesel engine is typically advertised at £19,800: the median of the 132 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Audi A5 has been on sale for at least 30 days.

Price history

AskCar first saw this advert on 6 October 2026 at £20,975. 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 5 November 2026: valid until 9 September 2027.

It has had 3 MOTs. The latest, on 20 August 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; under trays.

Mileage at that test: 43,905 miles. The advert says 43,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 7,700 miles lower than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

35 other 2021 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £13,995 to £23,990, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 43,957 miles. Price: £18,995, £1,980 less than this car. Dealer: Vertu Peugeot Oxford in Oxford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-6d2730d9e475
• 2021 Audi A5 S Line, 2.0 diesel hatchback, black. Mileage: 46,135 miles. Price: £19,583, £1,392 less than this car. Dealer: Lookers Audi Guildford in Guildford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-11e01a0446f9
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 39,000 miles. Price: £19,995, £980 less than this car. Dealer: Wallace Car Sales in Bolton. AskCar page: https://askcar.co.uk/car/audi-a5-2021-e1e1b8d9ff27

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, white, 25 miles from this car. Mileage: 68,126 miles. Price: £17,990, £2,985 less than this car. Dealer: Auto Zone Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a5-2021-235481043439