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: 42,537 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 145 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line has covered 42,537 miles, around 7,900 fewer miles than is typical for its age. The AskCar estimate for this car is £18,222. It is priced at £16,950, which is £1,272 below that estimate. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 83 days ago, the asking price has dropped by £1,700. Our records show an MOT expiry date of 6 September 2026, which has passed. Ask the dealer for an update. The seller is Group 1 Automotive Macclesfield Audi, based in Macclesfield. 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: £1,272 (6%) under the AskCar estimate of £18,222.

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 83 days.

Price history

AskCar first saw this advert on 11 August 2026 at £18,650. Its asking price is now £16,950, £1,700 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 11 August 2026: £18,650
• 19 August 2026: £18,590
• 4 September 2026: £17,995
• 21 September 2026: £17,895
• 6 October 2026: £16,995
• 27 October 2026: £16,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 6 September 2026; ask the dealer for the current MOT.

Advertised mileage is about 7,900 miles lower 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, black. Mileage: 39,477 miles. Price: £18,303, £1,353 more than this car. Dealer: David Hayton Autostore Penrith in Penrith. AskCar page: https://askcar.co.uk/car/audi-a3-2020-b65b73148871
• 2020 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 50,392 miles. Price: £17,300, £350 more than this car. Dealer: Sytner Select Northampton in Northampton. AskCar page: https://askcar.co.uk/car/audi-a3-2020-a0b4f5f99f2f
• 2020 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 50,521 miles. Price: £16,291, £659 less than this car. Dealer: Swansway Garages Swansway Honda Bolton in Bolton. AskCar page: https://askcar.co.uk/car/audi-a3-2020-10c7b9a13220

• The nearest: 2020 Audi A3 S Line, 2.0 diesel hatchback, white, 16 miles from this car. Mileage: 86,000 miles. Price: £13,795, £3,155 less than this car. Dealer: Dream Motor Specialist in Manchester. AskCar page: https://askcar.co.uk/car/audi-a3-2020-815d51fb7483