2021 Audi A4 Avant 2.0 TFSI S Line
Price: £21,995. Good value: £2,305 (9%) under the AskCar estimate of £24,300, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,256 priced Audi A4 Avant adverts on AskCar as of 6 November 2026.
AskCar lists 1,308 used Audi A4 Avant from 861 UK dealerships, as of 6 November 2026.
Overview
- Make: Audi
- Model: A4 Avant
- Trim: S Line
- Version: 2.0 45 TFSI 265 S Line S tronic 4WD Euro 6 5dr (261 bhp)
- Year: 2021
- Mileage: 37,139 miles
- Fuel: Petrol, mild hybrid
- Body: Estate, 5 doors, 5 seats
- Engine: 2.0 litres, 261 bhp
- Gearbox: Automatic (S tronic)
- Drive: Four-wheel drive
- Colour: Black
- CO2: 178 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 37,139 miles, this 2021 Audi A4 Avant S Line has covered about 20,900 fewer miles than other 2021 Audi A4 Avant cars. Priced at £21,995, it is advertised £2,305 below the AskCar estimate of £24,300. The AskCar estimate draws on 1,256 Audi A4 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 76 days ago. It is advertised by JMS Cars in Staines. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Good value: £2,305 (9%) under the AskCar estimate of £24,300.
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 1,256 priced Audi A4 Avant adverts across different ages and specifications, as of 6 November 2026.
A 2021 Audi A4 Avant with the 2.0 petrol engine is typically advertised at £18,400: the median of the 95 for sale on AskCar, as of 6 November 2026.
Time on sale
This 2021 Audi A4 Avant has been on sale for at least 76 days.
Price history
AskCar first saw this advert on 22 August 2026 at £21,995. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 20,900 miles lower than the median mileage of a 2021 Audi A4 Avant on AskCar.
Similar cars
5 other 2021 Audi A4 Avant S Line 2.0 petrol automatic estates are for sale at UK dealers, from £17,193 to £18,999, as of 6 November 2026.
The 3 closest to this car in mileage:
- 2021 Audi A4 Avant S Line, 2.0 petrol estate, white. Mileage: 36,190 miles. Price: £18,999, £2,996 less than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-169e3b407c31
- 2021 Audi A4 Avant S Line, 2.0 petrol estate, white. Mileage: 39,000 miles. Price: £18,995, £3,000 less than this car. Dealer: GT Motors in Saffron Walden. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-152cd45d635b
- 2021 Audi A4 Avant S Line, 2.0 petrol estate, white. Mileage: 51,190 miles. Price: £17,990, £4,005 less than this car. Dealer: Quattro Tech Cars in St Ives. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-67eaabc0f044
- The nearest: 2021 Audi A4 Avant S Line, 2.0 petrol estate, grey, 31 miles from this car. Mileage: 68,108 miles. Price: £17,193, £4,802 less than this car. Dealer: Cargem in Rainham. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-c57ee0b2812e
Browse all Audi A4 Avant cars for sale · 2021 Audi A4 Avant price guide
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Photos
46 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.