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) 4dr (148 bhp)
• Year: 2020
• Mileage: 45,971 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line is advertised with 45,971 miles, approximately 4,400 below the typical mileage for its age. The AskCar estimate for this car is £17,830. It is priced at £16,995, which is £835 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 81 days, and its asking price has been cut by £1,750. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Hitchfields in Huddersfield. 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: £835 (4%) under the AskCar estimate of £17,830.

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

The dealer may accept less. This 2020 Audi A3 has been on sale for at least 81 days, and its asking price has been cut by £1,750. About half of 2020 Audi A3 cars are gone from sale within a month of being advertised: 226 of the 433 first advertised between 8 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 13 August 2026 at £18,745. Its asking price is now £16,995, £1,750 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 13 August 2026: £18,745
• 24 August 2026: £18,227
• 29 August 2026: £17,990
• 5 September 2026: £17,690
• 25 September 2026: £17,495
• 9 October 2026: £17,295
• 22 October 2026: £16,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 7 November 2026.

It has had 3 MOTs. The latest, on 5 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 44,370 miles, which matches the advertised 45,971 miles.

Advertised mileage is about 4,400 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

5 other 2020 Audi A3 S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £14,998 to £18,000, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 2.0 diesel saloon, black. Mileage: 37,600 miles. Price: £18,000, £1,005 more than this car. Dealer: nucar in Basildon. AskCar page: https://askcar.co.uk/car/audi-a3-2020-bb971cd085d6
• 2020 Audi A3 S Line, 2.0 diesel saloon, grey. Mileage: 36,546 miles. Price: £17,480, £485 more than this car. Dealer: Leigh Cars in Southend-on-Sea. AskCar page: https://askcar.co.uk/car/audi-a3-2020-274724057708
• 2020 Audi A3 S Line, 2.0 diesel saloon, grey. Mileage: 59,508 miles. Price: £16,985, the same price as this car. Dealer: Listers Birmingham Audi in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a3-2020-6c692897ad01

• The nearest: 2020 Audi A3 S Line, 2.0 diesel saloon, black, 51 miles from this car. Mileage: 63,397 miles. Price: £14,999, £1,996 less than this car. Dealer: Stratstone Liverpool Audi in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a3-2020-04218e84faa6