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: 101,094 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 101,094 miles on the clock, this 2021 Audi A4 S Line has done roughly 50,900 more miles than a typical 2021 Audi A4. Priced at £12,995, it is advertised £475 above the AskCar estimate of £12,520. The AskCar estimate draws on 1,427 Audi A4 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 58 days ago, and its asking price has since fallen by £300. Our latest MOT record expired on 7 October 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Tenby Car Supermarket in Luton. 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: £475 (3%) over the AskCar estimate of £12,520.

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 diesel 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 58 days.

Price history

AskCar first saw this advert on 7 September 2026 at £13,295. Its asking price is now £12,995, £300 less. The latest price cut was seen on 7 October 2026.

Price changes recorded:

• 7 September 2026: £13,295
• 7 October 2026: £12,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 7 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 6 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 94,879 miles, which matches the advertised 101,094 miles.

Advertised mileage is about 50,900 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 £15,000 to £20,495, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 S Line, 2.0 diesel saloon, white. Mileage: 78,000 miles. Price: £15,000, £2,005 more than this car. Dealer: Mylson Stoke in Newcastle-under-Lyme. AskCar page: https://askcar.co.uk/car/audi-a4-2021-a2ad2dde85f8
• 2021 Audi A4 S Line, 2.0 diesel saloon, white. Mileage: 69,960 miles. Price: £15,498, £2,503 more than this car. Dealer: Arnold Clark Cumbernauld Kia in Cumbernauld. AskCar page: https://askcar.co.uk/car/audi-a4-2021-f489aca9ff93
• 2021 Audi A4 S Line, 2.0 diesel saloon, black. Mileage: 64,000 miles. Price: £16,769, £3,774 more than this car. Dealer: Newarth Car Sales in Worsley. AskCar page: https://askcar.co.uk/car/audi-a4-2021-4f6db3642494

• The nearest: 2021 Audi A4 S Line, 2.0 diesel saloon, black, 3 miles from this car. Mileage: 62,284 miles. Price: £16,799, £3,804 more than this car. Dealer: TU Motors in Luton. AskCar page: https://askcar.co.uk/car/audi-a4-2021-d657172cf74a