2021 Audi A4 2.0 TFSI S Line
Price: £16,528. Fair price: £415 (2%) under the AskCar estimate of £16,943, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,427 priced Audi A4 adverts on AskCar as of 5 November 2026.
AskCar lists 1,489 used Audi A4 from 965 UK dealerships, as of 5 November 2026.
Overview
- Make: Audi
- Model: A4
- Trim: S Line
- Version: 2.0 TFSI 35 S Line Manual FWD Euro 6 (s/s) 4dr (148 bhp)
- Year: 2021
- Mileage: 36,000 miles
- Fuel: Petrol
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 148 bhp
- Gearbox: Manual
- Drive: Front-wheel drive
- Colour: White
- CO2: 137 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 36,000 miles on the clock, this 2021 Audi A4 S Line has done roughly 14,200 fewer miles than a typical 2021 Audi A4. Priced at £16,528, it is advertised £415 below the AskCar estimate of £16,943. The AskCar estimate uses UK dealer asking prices, including 1,427 Audi A4 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 29 days ago, the asking price has dropped by £762. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Peoples Liverpool Speke, based in Liverpool. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Fair price: £415 (2%) under the AskCar estimate of £16,943.
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 1,427 priced Audi A4 adverts across different ages and specifications, as of 5 November 2026.
A 2021 Audi A4 with the 2.0 petrol engine is typically advertised at £17,100: the median of the 95 for sale on AskCar, as of 5 November 2026.
Time on sale
This 2021 Audi A4 has been on sale for at least 29 days.
Price history
AskCar first saw this advert on 7 October 2026 at £17,290. Its asking price is now £16,528, £762 less. The latest price cut was seen on 2 November 2026.
Price changes recorded:
- 7 October 2026: £17,290
- 23 October 2026: £16,958
- 2 November 2026: £16,528
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 18 May 2027.
It has had 3 MOTs. The latest, on 11 May 2026, passed.
Advisories at the latest test: offside front tyre worn close to legal limit/worn on edge 245x35x19.
Mileage at that test: 33,955 miles, which matches the advertised 36,000 miles.
Advertised mileage is about 14,200 miles lower than the median mileage of a 2021 Audi A4 on AskCar.
Similar cars
2 other 2021 Audi A4 S Line 2.0 petrol manual saloons are for sale at UK dealers, from £15,980 to £16,490, as of 5 November 2026.
The 2 closest to this car in mileage:
- 2021 Audi A4 S Line, 2.0 petrol saloon, black. Mileage: 41,966 miles. Price: £16,490, the same price as this car. Dealer: Bridgend Motor Group in Morley. AskCar page: https://askcar.co.uk/car/audi-a4-2021-effadca56055
- 2021 Audi A4 S Line, 2.0 petrol saloon, white. Mileage: 44,966 miles. Price: £15,980, £548 less than this car. Dealer: Sandicliffe Ford Loughborough in Loughborough. AskCar page: https://askcar.co.uk/car/audi-a4-2021-fee3496a3008
Browse all Audi A4 cars for sale · 2021 Audi A4 price guide
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Photos
16 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.