2021 Audi A4 2.0 TDI S Line

Overview

• Make: Audi
• Model: A4
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 4dr (160 bhp)
• Year: 2021
• Mileage: 62,800 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 62,800 miles on the clock, this 2021 Audi A4 S Line has done roughly 12,600 more miles than a typical 2021 Audi A4. Its asking price of £16,693 is £108 above the AskCar estimate of £16,585. The AskCar estimate uses UK dealer asking prices, including 1,428 Audi A4 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 47 days ago, the asking price has dropped by £800. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Aylesbury Trade Centre, based in Aylesbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £108 (under 1%) over the AskCar estimate of £16,585.

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 1,428 priced Audi A4 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A4 with the 2.0 diesel engine is typically advertised at £17,100: the median of the 95 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A4 has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 16 September 2026 at £17,493. Its asking price is now £16,693, £800 less. The latest price cut was seen on 6 October 2026.

Price changes recorded:

• 16 September 2026: £17,493
• 19 September 2026: £17,593
• 1 October 2026: £17,093
• 6 October 2026: £16,693

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 22 August 2027.

It has had 5 MOTs. The latest, on 3 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 61,206 miles, which matches the advertised 62,800 miles.

Advertised mileage is about 12,600 miles higher than the median mileage of a 2021 Audi A4 on AskCar.

Similar cars

16 other 2021 Audi A4 S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £12,995 to £20,495, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 S Line, 2.0 diesel saloon, black. Mileage: 62,284 miles. Price: £16,799, £106 more than this car. Dealer: TU Motors in Luton. AskCar page: https://askcar.co.uk/car/audi-a4-2021-d657172cf74a
• 2021 Audi A4 S Line, 2.0 diesel saloon, black. Mileage: 64,000 miles. Price: £16,769, £76 more than this car. Dealer: Newarth Car Sales in Worsley. AskCar page: https://askcar.co.uk/car/audi-a4-2021-4f6db3642494
• 2021 Audi A4 S Line, 2.0 diesel saloon, grey. Mileage: 60,600 miles. Price: £17,250, £557 more than this car. Dealer: Igen Autos in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-a4-2021-400b2694197e

• The nearest: 2021 Audi A4 S Line, 2.0 diesel saloon, black, 13 miles from this car. Mileage: 101,094 miles. Price: £12,995, £3,698 less than this car. Dealer: Tenby Car Supermarket in Luton. AskCar page: https://askcar.co.uk/car/audi-a4-2021-267de4b8f370