2020 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
• Year: 2020
• Mileage: 44,534 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line is advertised with 44,534 miles, approximately 5,900 below the typical mileage for its age. Priced at £16,785, it is advertised £1,037 below the AskCar estimate of £17,822. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. We first recorded this car for sale 19 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Autochoice Car Supermarket, based in Blackburn. 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: £1,037 (5%) under the AskCar estimate of £17,822.

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 1.5 petrol engine is typically advertised at £16,000: the median of the 134 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 Audi A3 has been on sale for at least 19 days.

Price history

AskCar first saw this advert on 14 October 2026 at £16,785. Its asking price has not changed.

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 March 2027.

It failed its MOT on 24 March 2026 (offside front outer tyre has a bulge, caused by separation or partial failure of its structure; nearside rear tyre has ply or cords exposed; offside rear tyre has ply or cords exposed; and 1 more) and passed 1 day later, on 25 March 2026.

There were no advisories at the latest test.

Mileage at that test: 35,178 miles, which matches the advertised 44,534 miles.

Advertised mileage is about 5,900 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

12 other 2020 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £13,990 to £21,200, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 41,350 miles. Price: £18,498, £1,713 more than this car. Dealer: Arnold Clark Liverpool Motorstore / MG / Chery in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a3-2020-01013607e84d
• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 40,975 miles. Price: £17,995, £1,210 more than this car. Dealer: NSA Motor Vehicles in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2020-9d6fc760e872
• 2020 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 40,672 miles. Price: £17,104, £319 more than this car. Dealer: Lookers Audi Farnborough in Farnborough. AskCar page: https://askcar.co.uk/car/audi-a3-2020-a2e90aaf36b8