2021 Audi A3 2.0 TDI S Line
Price: £16,498. Fair price: £263 (1%) under the AskCar estimate of £16,761, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,620 priced Audi A3 adverts on AskCar as of 8 November 2026.
AskCar lists 6,811 used Audi A3 from 2,296 UK dealerships, as of 8 November 2026.
Overview
- Make: Audi
- Model: A3
- Trim: S Line
- Version: 2.0 TDI 30 S Line Manual FWD Euro 6 (s/s) 4dr (114 bhp)
- Year: 2021
- Mileage: 53,180 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 114 bhp
- Gearbox: Manual
- Drive: Front-wheel drive
- Colour: Black
- CO2: 119 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 Audi A3 S Line has covered 53,180 miles, around 10,800 more miles than is typical for its age. The dealer is asking £16,498, which is £263 below the AskCar estimate of £16,761. To work out the AskCar estimate, we analyse UK dealer adverts for 6,620 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 52 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Arnold Clark Huddersfield Fiat / Abarth / Jeep / Alfa Romeo / OMODA / JAECOO / Geely, based in Huddersfield. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Fair price: £263 (1%) under the AskCar estimate of £16,761.
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 6,620 priced Audi A3 adverts across different ages and specifications, as of 8 November 2026.
A 2021 Audi A3 with the 2.0 diesel engine is typically advertised at £17,400: the median of the 47 for sale on AskCar, as of 8 November 2026.
Time on sale
This 2021 Audi A3 has been on sale for at least 52 days.
Price history
AskCar first saw this advert on 17 September 2026 at £16,498. 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 8 November 2026: valid until 3 June 2027.
It failed its MOT on 4 June 2026 (nearside front tyre has a cut in excess of the requirements deep enough to reach the ply or cords; nearside rear tyre has a cut in excess of the requirements deep enough to reach the ply or cords) and passed later the same day.
There were no advisories at the latest test.
Mileage at that test: 51,751 miles, which matches the advertised 53,180 miles.
Advertised mileage is about 10,800 miles higher than the median mileage of a 2021 Audi A3 on AskCar.
Similar cars
2 other 2021 Audi A3 S Line 2.0 diesel manual saloons are for sale at UK dealers, from £13,990 to £15,495, as of 8 November 2026.
The 2 closest to this car in mileage:
- 2021 Audi A3 S Line, 2.0 diesel saloon, black. Mileage: 70,871 miles. Price: £13,990, £2,508 less than this car. Dealer: Big Motoring World Cannock in Cannock. AskCar page: https://askcar.co.uk/car/audi-a3-2021-a14c22602496
- 2021 Audi A3 S Line, 2.0 diesel saloon, grey. Mileage: 91,000 miles. Price: £15,495, £1,003 less than this car. Dealer: MC Autosales in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ff8244efaf1d
Browse all Audi A3 cars for sale · 2021 Audi A3 price guide
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- Used Audi A3 for sale near Huddersfield
Photos
20 photos of this car are on its AskCar page.
As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.