2021 Audi A4 2.0 TFSI S Line
Version: 2.0 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
Price: £15,000. Fair price: £702 (4%) over the AskCar estimate of £14,298, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,403 priced Audi A4 adverts on AskCar as of 1 November 2026.
AskCar lists 1,461 used Audi A4 from 957 UK dealerships, as of 1 November 2026.
Overview
- Make
- Audi
- Model
- A4
- Trim
- S Line
- Version
- 2.0 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
- Mileage
- 72,259 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- Saloon
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 148 bhp
- Seats
- 5
- CO2
- 154 g/km
- Colour
- Grey
- Doors
- 4
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TFSI
- Emissions standard
- Euro 6
About this car
With 72,259 miles on the clock, this 2021 Audi A4 S Line has done roughly 21,900 more miles than a typical 2021 Audi A4. Priced at £15,000, it is advertised £702 above the AskCar estimate of £14,298. The AskCar estimate uses UK dealer asking prices, including 1,403 Audi A4 adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert today. Its MOT is recorded as valid until 24 March 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by Fusion Motors in Grays.
Stock data as of 1 November 2026.
Price history
AskCar first saw this advert on 1 November 2026.
| Date observed | Asking price |
|---|---|
| 1 November 2026 | £15,000 |
Price and mileage comparison
Fair price: £702 (4%) over the AskCar estimate of £14,298.
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 1,403 priced Audi A4 adverts across different ages and specifications, as of 1 November 2026.
Advertised mileage is about 21,900 miles higher than the median mileage of a 2021 Audi A4 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 24 March 2027. 63,456 miles at the last test.
Other matching cars
7 other 2021 Audi A4 S Line automatic petrol cars are for sale at UK dealers from £14,295 to £21,945, as of 1 November 2026.
The 5 cheapest:
- 2021 Audi A4. Price: £14,295. Mileage: 74,000 miles. Dealer: Graham Marsh Car Sales in Herne Bay. AskCar page: https://askcar.co.uk/car/audi-a4-2021-eee1e7fb91ec
- 2021 Audi A4. Price: £17,100. Mileage: 25,865 miles. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-8f18484fdadf
- 2021 Audi A4. Price: £17,490. Mileage: 47,400 miles. Dealer: Stow Car Company in Chelmsford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-16627277c0b6
- 2021 Audi A4. Price: £17,498. Mileage: 48,709 miles. Dealer: Arnold Clark Lenzie Vauxhall in Lenzie. AskCar page: https://askcar.co.uk/car/audi-a4-2021-baed951e7b4c
- 2021 Audi A4. Price: £18,200. Mileage: 27,162 miles. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-b955fd89d49e
The 7 matching cars have covered 15,297 to 74,000 miles, compared with 72,259 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Audi A4 cars for sale · 2021 Audi A4 price guide
More like this
Photos
31 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 1 November 2026, AskCar lists 578,994 cars and vans from 12,654 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.