2021 Audi A4 2.0 TFSI S Line
Price: £16,999. Fair price: £93 (under 1%) under the AskCar estimate of £17,092, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,424 priced Audi A4 adverts on AskCar as of 7 November 2026.
AskCar lists 1,480 used Audi A4 from 969 UK dealerships, as of 7 November 2026.
Overview
- Make: Audi
- Model: A4
- Trim: S Line
- Version: 2.0 TFSI 40 S Line S tronic FWD Euro 6 (s/s) 4dr (201 bhp)
- Year: 2021
- Mileage: 51,000 miles
- Fuel: Petrol, mild hybrid
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 201 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 155 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2021 Audi A4 S Line is 51,000 miles. Its asking price of £16,999 is £93 below the AskCar estimate of £17,092. The AskCar estimate draws on 1,424 Audi A4 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Lookers Car Hub South Shields, based in South Shields. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £93 (under 1%) under the AskCar estimate of £17,092.
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 1,424 priced Audi A4 adverts across different ages and specifications, as of 7 November 2026.
A 2021 Audi A4 with the 2.0 petrol engine is typically advertised at £17,000: the median of the 94 for sale on AskCar, as of 7 November 2026.
Time on sale
AskCar first saw this 2021 Audi A4 advertised today. About half of 2021 Audi A4 cars are gone from sale within a month of being advertised: 58 of the 126 first advertised between 11 July 2026 and 4 October 2026.
Price history
AskCar first saw this advert on 7 November 2026 at £16,999. 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 7 November 2026: valid until 15 October 2027.
It has had 4 MOTs. The latest, on 10 October 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 50,089 miles, which matches the advertised 51,000 miles.
Advertised mileage is about 800 miles higher than the median mileage of a 2021 Audi A4 on AskCar.
Similar cars
6 other 2021 Audi A4 S Line 2.0 petrol automatic saloons are for sale at UK dealers, from £15,000 to £21,745, as of 7 November 2026.
The 3 closest to this car in mileage:
- 2021 Audi A4 S Line, 2.0 petrol saloon, blue. Mileage: 48,709 miles. Price: £17,498, £499 more than this car. Dealer: Arnold Clark Lenzie Vauxhall in Lenzie. AskCar page: https://askcar.co.uk/car/audi-a4-2021-baed951e7b4c
- 2021 Audi A4 S Line, 2.0 petrol saloon, black. Mileage: 47,400 miles. Price: £17,490, £491 more than this car. Dealer: Stow Car Company in Chelmsford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-16627277c0b6
- 2021 Audi A4 S Line, 2.0 petrol saloon, white. Mileage: 33,568 miles. Price: £19,999, £3,000 more than this car. Dealer: Bridgend Motor Group in Gateshead. AskCar page: https://askcar.co.uk/car/audi-a4-2021-3dc8fc35c99a
Browse all Audi A4 cars for sale · 2021 Audi A4 price guide
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Photos
30 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.