2020 Audi A3 2.0 TDI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2020
• Mileage: 78,000 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line is advertised with 78,000 miles, approximately 27,600 above the typical mileage for its age. Its asking price of £14,399 is £193 below the AskCar estimate of £14,592. The AskCar estimate draws on 6,542 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 20 days ago. Its asking price has since fallen by £300. The government's MOT record matches its advertised mileage. You can find this car at Rangebrook in Nuneaton. 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: £193 (1%) under the AskCar estimate of £14,592.

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 6,542 priced Audi A3 adverts across different ages and specifications, as of 2 November 2026.

A 2020 Audi A3 with the 2.0 diesel engine is typically advertised at £16,800: the median of the 52 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 Audi A3 has been on sale for at least 20 days.

Price history

AskCar first saw this advert on 13 October 2026 at £14,699. Its asking price is now £14,399, £300 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 13 October 2026: £14,699
• 29 October 2026: £14,399

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 September 2027.

It has had 4 MOTs. The latest, on 24 September 2026, passed.

Advisories at the latest test: rear exhaust heatshield insecure.

Mileage at that test: 77,426 miles, which matches the advertised 78,000 miles.

Advertised mileage is about 27,600 miles higher than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

13 other 2020 Audi A3 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £10,995 to £19,770, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 2.0 diesel hatchback, white. Mileage: 86,000 miles. Price: £13,795, £604 less than this car. Dealer: Dream Motor Specialist in Manchester. AskCar page: https://askcar.co.uk/car/audi-a3-2020-815d51fb7483
• 2020 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 88,430 miles. Price: £14,300, £99 less than this car. Dealer: R 8 Motor Group in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2020-17b66140c527
• 2020 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 88,430 miles. Price: £14,300, £99 less than this car. Dealer: Moto Porium in Bradford. AskCar page: https://askcar.co.uk/car/audi-a3-2020-28a76204192a

• The nearest: 2020 Audi A3 S Line, 2.0 diesel hatchback, black, 33 miles from this car. Mileage: 62,613 miles. Price: £16,299, £1,900 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2020-290ce4dec3b0