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: 56,988 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 56,988 miles, this 2021 Audi A4 S Line has covered about 6,800 more miles than other 2021 Audi A4 cars. Priced at £16,796, it is advertised £416 below the AskCar estimate of £17,212. To work out the AskCar estimate, we analyse UK dealer adverts for 1,428 Audi A4 cars across different ages and specifications. Since we first spotted the advert 17 days ago, the asking price has dropped by £57. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is LSH Auto Mercedes-Benz of Stockport, based in Stockport. 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: £416 (2%) under the AskCar estimate of £17,212.

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 17 days.

Price history

AskCar first saw this advert on 16 October 2026 at £16,853. Its asking price is now £16,796, £57 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 16 October 2026: £16,853
• 24 October 2026: £16,796

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 27 July 2027.

It has had 3 MOTs. The latest, on 20 July 2026, passed.

Advisories at the latest test: items removed from driver's view prior to test; undertrays fitted obscuring some components.

Mileage at that test: 54,341 miles, which matches the advertised 56,988 miles.

Advertised mileage is about 6,800 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, grey. Mileage: 56,589 miles. Price: £16,998, £202 more than this car. Dealer: Used Car Sales Direct Exeter Direct in Exeter. AskCar page: https://askcar.co.uk/car/audi-a4-2021-de7aae9b2de1
• 2021 Audi A4 S Line, 2.0 diesel saloon, black. Mileage: 55,966 miles. Price: £16,999, £203 more than this car. Dealer: Bridgend Motor Group in Morley. AskCar page: https://askcar.co.uk/car/audi-a4-2021-ac0d199c23d4
• 2021 Audi A4 S Line, 2.0 diesel saloon, grey. Mileage: 60,600 miles. Price: £17,250, £454 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, 12 miles from this car. Mileage: 64,000 miles. Price: £16,769, the same price as this car. Dealer: Newarth Car Sales in Worsley. AskCar page: https://askcar.co.uk/car/audi-a4-2021-4f6db3642494