2021 Audi A4 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A4 Avant
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr (160 bhp)
• Year: 2021
• Mileage: 60,000 miles
• Fuel: Diesel, mild hybrid
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A4 Avant S Line has covered 60,000 miles. The AskCar estimate for this car is £18,626. It is priced at £17,987, which is £639 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 1,232 Audi A4 Avant cars across different ages and specifications. Since we first spotted the advert 112 days ago, the asking price has dropped by £1,513. Ask the dealer why the advert shows fewer miles than the 60,979 recorded at the latest MOT. MOT records show an expiry date of 24 June 2027. The seller is David Hayton Autostore Penrith, based in Penrith. 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: £639 (3%) under the AskCar estimate of £18,626.

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 1,232 priced Audi A4 Avant adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A4 Avant with the 2.0 diesel engine is typically advertised at £18,500: the median of the 95 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Audi A4 Avant has been on sale for at least 112 days.

Price history

AskCar first saw this advert on 15 July 2026 at £19,500. Its asking price is now £17,987, £1,513 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 23 July 2026: £19,500
• 25 August 2026: £19,090
• 1 September 2026: £18,973
• 9 September 2026: £18,832
• 16 September 2026: £18,658
• 23 September 2026: £18,517
• 30 September 2026: £18,434
• 7 October 2026: £18,306
• 14 October 2026: £18,216
• 25 October 2026: £18,107
• 4 November 2026: £17,987

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 24 June 2027.

It has had 3 MOTs. The latest, on 26 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 60,979 miles. The advert says 60,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 300 miles higher than the median mileage of a 2021 Audi A4 Avant on AskCar.

Similar cars

18 other 2021 Audi A4 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £8,999 to £22,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 Avant S Line, 2.0 diesel estate, black. Mileage: 60,608 miles. Price: £18,149, £162 more than this car. Dealer: Second Chance Car Finance in Wetherby. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-e62692a85e9d
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, white. Mileage: 54,820 miles. Price: £17,995, the same price as this car. Dealer: P W Millar Ford in Barry. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-a5badf95220c
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, black. Mileage: 70,000 miles. Price: £16,995, £992 less than this car. Dealer: Rodden Road Cars in Frome. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-dde9aa6fce07

• The nearest: 2021 Audi A4 Avant S Line, 2.0 diesel estate, black, 67 miles from this car. Mileage: 108,000 miles. Price: £13,995, £3,992 less than this car. Dealer: Enzo Cars & Vans in Blackburn. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-8873dff9afb5