2021 Audi A4 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A4
• Trim: S Line
• Version: 2.0 TFSI S Line Auto FWD Euro 6 4dr
• Year: 2021
• Mileage: 33,568 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: White
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A4 S Line has covered 33,568 miles, around 16,600 fewer miles than is typical for its age. Priced at £19,999, it is advertised £640 above the AskCar estimate of £19,358. To work out the AskCar estimate, we analyse UK dealer adverts for 1,427 Audi A4 cars across different ages and specifications. It first appeared in our advert records 32 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Bridgend Motor Group in Gateshead. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £640 (3%) over the AskCar estimate of £19,358.

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 4 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 4 November 2026.

Time on sale

This 2021 Audi A4 has been on sale for at least 32 days.

Price history

AskCar first saw this advert on 3 October 2026 at £19,999. 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 4 November 2026: valid until 18 June 2027.

It failed its MOT on 12 June 2026 (offside front service brake excessively fluctuating; nearside rear service brake excessively binding) and passed 7 days later, on 19 June 2026.

There were no advisories at the latest test.

Mileage at that test: 33,005 miles, which matches the advertised 33,568 miles.

Advertised mileage is about 16,600 miles lower 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 S Line, 2.0 petrol saloon, grey. Mileage: 27,162 miles. Price: £18,200, £1,799 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-b955fd89d49e
• 2021 Audi A4 S Line, 2.0 petrol saloon, black. Mileage: 25,865 miles. Price: £17,100, £2,899 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-8f18484fdadf
• 2021 Audi A4 S Line, 2.0 petrol saloon, black. Mileage: 47,400 miles. Price: £17,490, £2,509 less than this car. Dealer: Stow Car Company in Chelmsford. AskCar page: https://askcar.co.uk/car/audi-a4-2021-16627277c0b6

• The nearest: 2021 Audi A4 S Line, 2.0 petrol saloon, blue, 120 miles from this car. Mileage: 48,709 miles. Price: £17,498, £2,501 less than this car. Dealer: Arnold Clark Lenzie Vauxhall in Lenzie. AskCar page: https://askcar.co.uk/car/audi-a4-2021-baed951e7b4c