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: 39,477 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

With 39,477 miles on the clock, this 2020 Audi A3 S Line has done roughly 10,600 fewer miles than a typical 2020 Audi A3. Priced at £18,303, it is advertised £200 below the AskCar estimate of £18,503. To work out the AskCar estimate, we analyse UK dealer adverts for 6,630 Audi A3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 160 days, and its asking price has been cut by £1,317. Its advertised mileage matches the government's MOT record. 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: £200 (1%) under the AskCar estimate of £18,503.

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 6,630 priced Audi A3 adverts across different ages and specifications, as of 4 November 2026.

A 2020 Audi A3 with the 2.0 diesel engine is typically advertised at £16,800: the median of the 54 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2020 Audi A3 has been on sale for at least 160 days, and its asking price has been cut by £1,317. About half of 2020 Audi A3 cars are gone from sale within a month of being advertised: 248 of the 473 first advertised between 8 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £19,620. Its asking price is now £18,303, £1,317 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 28 May 2026: £19,620
• 16 June 2026: £19,580
• 18 June 2026: £19,500
• 6 July 2026: £19,304
• 13 July 2026: £19,114
• 20 July 2026: £18,982
• 27 July 2026: £18,884
• 3 August 2026: £18,832
• 17 August 2026: £18,867
• 25 August 2026: £18,751
• 31 August 2026: £18,766
• 4 September 2026: £18,590
• 11 September 2026: £18,610
• 18 September 2026: £18,486
• 25 September 2026: £18,480
• 1 October 2026: £18,501
• 9 October 2026: £18,483
• 16 October 2026: £18,474
• 24 October 2026: £18,387
• 31 October 2026: £18,303

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 9 April 2027.

It has had 5 MOTs. The latest, on 30 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 39,147 miles, which matches the advertised 39,477 miles.

Advertised mileage is about 10,600 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 £19,740, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 2.0 diesel hatchback, grey. Mileage: 42,537 miles. Price: £16,950, £1,353 less than this car. Dealer: Group 1 Automotive Macclesfield Audi in Macclesfield. AskCar page: https://askcar.co.uk/car/audi-a3-2020-43079e6b608e
• 2020 Audi A3 S Line, 2.0 diesel hatchback, white. Mileage: 29,536 miles. Price: £18,499, £196 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2020-c0dcda6d8fe9
• 2020 Audi A3 S Line, 2.0 diesel hatchback, black. Mileage: 50,392 miles. Price: £17,300, £1,003 less than this car. Dealer: Sytner Select Northampton in Northampton. AskCar page: https://askcar.co.uk/car/audi-a3-2020-a0b4f5f99f2f

• The nearest: 2020 Audi A3 S Line, 2.0 diesel hatchback, white, 63 miles from this car. Mileage: 11,648 miles. Price: £19,740, £1,437 more than this car. Dealer: Evans Halshaw Ford Middlesbrough in Middlesbrough. AskCar page: https://askcar.co.uk/car/audi-a3-2020-938ca0365afb