2021 Audi A3 2.0 TDI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 2.0 TDI 30 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (114 bhp)
• Year: 2021
• Mileage: 25,000 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 114 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 128 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 25,000 miles, around 18,600 fewer miles than is typical for its age. Its asking price of £18,500 is £1,152 below the AskCar estimate of £19,652. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 158 days, and its asking price has been cut by £2,500. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at George Rhodes And Sons in Stoke-on-Trent. 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: £1,152 (5%) under the AskCar estimate of £19,652.

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 6,542 priced Audi A3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A3 with the 2.0 diesel engine is typically advertised at £17,400: the median of the 45 for sale on AskCar, as of 2 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 158 days, and its asking price has been cut by £2,500. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 403 of the 709 first advertised between 7 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £21,000. Its asking price is now £18,500, £2,500 less. The latest price cut was seen on 16 October 2026.

Price changes recorded:

• 29 May 2026: £21,000
• 10 June 2026: £20,500
• 17 June 2026: £20,000
• 5 September 2026: £19,000
• 16 October 2026: £18,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 12 April 2027.

It has had 3 MOTs. The latest, on 19 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,267 miles, which matches the advertised 25,000 miles.

Advertised mileage is about 18,600 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

6 other 2021 Audi A3 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £15,950 to £18,520, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 2.0 diesel hatchback, white. Mileage: 42,232 miles. Price: £18,520, the same price as this car. Dealer: Vertu Audi Hereford in Hereford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-5625e61092eb
• 2021 Audi A3 S Line, 2.0 diesel hatchback, white. Mileage: 43,744 miles. Price: £18,000, £500 less than this car. Dealer: Sytner Group West London Audi in London. AskCar page: https://askcar.co.uk/car/audi-a3-2021-faa149fc5438
• 2021 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 44,495 miles. Price: £17,490, £1,010 less than this car. Dealer: Barlow Motors Crewe Skoda in Crewe. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ea0fc4041912