2021 Audi A4 Avant 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A4 Avant
• Trim: S Line
• Version: 2.0 TFSI S Line S tronic FWD Euro 6 5dr (147 bhp)
• Year: 2021
• Mileage: 60,311 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A4 Avant S Line has covered 60,311 miles. Its asking price of £17,533 is £370 above the AskCar estimate of £17,163. The AskCar estimate draws on 1,232 Audi A4 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 4 days ago. Its advertised mileage matches the government's MOT record. The seller is Carsa Gloucester, based in Gloucester. 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: £370 (2%) over the AskCar estimate of £17,163.

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 petrol engine is typically advertised at £18,500: the median of the 95 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2021 Audi A4 Avant advertised 4 days ago. About 4 in 10 of 2021 Audi A4 Avant cars are gone from sale within a month of being advertised: 48 of the 109 first advertised between 11 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 31 October 2026 at £17,032. Its asking price is now £17,533, £501 more.

Price changes recorded:

• 31 October 2026: £17,032
• 1 November 2026: £17,510
• 2 November 2026: £17,524
• 3 November 2026: £17,533

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 12 October 2027.

It has had 3 MOTs. The latest, on 13 October 2026, passed.

Advisories at the latest test: rear registration plate deteriorated but not likely to be misread; rear tyre worn close to legal limit/worn on edge; front brake pad(s) wearing thin.

Mileage at that test: 59,944 miles, which matches the advertised 60,311 miles.

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

Similar cars

5 other 2021 Audi A4 Avant S Line 2.0 petrol automatic estates are for sale at UK dealers, from £17,193 to £21,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 Avant S Line, 2.0 petrol estate, grey. Mileage: 68,108 miles. Price: £17,193, £340 less than this car. Dealer: Cargem in Rainham. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-c57ee0b2812e
• 2021 Audi A4 Avant S Line, 2.0 petrol estate, white. Mileage: 51,190 miles. Price: £17,990, £457 more than this car. Dealer: Quattro Tech Cars in St Ives. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-67eaabc0f044
• 2021 Audi A4 Avant S Line, 2.0 petrol estate, white. Mileage: 39,000 miles. Price: £18,995, £1,462 more than this car. Dealer: GT Motors in Saffron Walden. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-152cd45d635b

• The nearest: 2021 Audi A4 Avant S Line, 2.0 petrol estate, black, 77 miles from this car. Mileage: 37,139 miles. Price: £21,995, £4,462 more than this car. Dealer: JMS Cars in Staines. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-54021a407932