2020 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 30 (134 bhp)
• Year: 2020
• Mileage: 65,745 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 134 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 139 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2020 Audi A4 Avant S Line is 65,745 miles. Its asking price of £14,850 is £1,252 below the AskCar estimate of £16,102. The AskCar estimate uses 1,202 UK dealer adverts for the Audi A4 Avant, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 65 days ago. Its asking price has since fallen by £1,550. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Car Planet Watford in Rickmansworth. 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: £1,252 (7%) under the AskCar estimate of £16,102.

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 1,202 priced Audi A4 Avant adverts across different ages and specifications, as of 2 November 2026.

A 2020 Audi A4 Avant with the 2.0 diesel engine is typically advertised at £17,000: the median of the 85 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 Audi A4 Avant has been on sale for at least 65 days.

Price history

AskCar first saw this advert on 29 August 2026 at £16,400. Its asking price is now £14,850, £1,550 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 29 August 2026: £16,400
• 11 September 2026: £16,150
• 22 September 2026: £15,900
• 5 October 2026: £15,700
• 11 October 2026: £15,400
• 17 October 2026: £15,150
• 23 October 2026: £14,850

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 5 March 2027.

It has had 4 MOTs. The latest, on 9 February 2026, passed.

Advisories at the latest test: under trays fitted obscuring view of various items.

Mileage at that test: 65,145 miles, which matches the advertised 65,745 miles.

Advertised mileage is about 700 miles higher than the median mileage of a 2020 Audi A4 Avant on AskCar.

Similar cars

9 other 2020 Audi A4 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £11,250 to £19,199, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A4 Avant S Line, 2.0 diesel estate, blue. Mileage: 62,216 miles. Price: £16,999, £2,149 more than this car. Dealer: Faintree Garage Faintree Seat in Shrewsbury. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2020-a86121fb8a74
• 2020 Audi A4 Avant S Line, 2.0 diesel estate, blue. Mileage: 70,185 miles. Price: £16,995, £2,145 more than this car. Dealer: Simpson Motors in Dunfermline. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2020-254120ceab01
• 2020 Audi A4 Avant S Line, 2.0 diesel estate, white. Mileage: 71,780 miles. Price: £16,740, £1,890 more than this car. Dealer: Steven Eagell Toyota Wolverhampton in Wolverhampton. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2020-a5841b482df9

• The nearest: 2020 Audi A4 Avant S Line, 2.0 diesel estate, grey, 9 miles from this car. Mileage: 71,800 miles. Price: £15,650, £800 more than this car. Dealer: David Ascott Motors in Greenford. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2020-a1a5567ce922