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: 31,251 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: Black
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 31,251 miles, this 2020 Audi A3 S Line has covered about 18,800 fewer miles than other 2020 Audi A3 cars. Priced at £18,980, it is advertised £184 below the AskCar estimate of £19,164. To work out the AskCar estimate, we analyse UK dealer adverts for 6,629 Audi A3 cars across different ages and specifications. This car was first seen in our listings data today. We checked its advertised mileage against the government's MOT record, and they match. The seller is Stratstone Wolverhampton Audi, based in Wolverhampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £184 (under 1%) under the AskCar estimate of £19,164.

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 6,629 priced Audi A3 adverts across different ages and specifications, as of 10 November 2026.

A 2020 Audi A3 with the 1.5 petrol engine is typically advertised at £15,900: the median of the 153 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2020 Audi A3 advertised today. About half of 2020 Audi A3 cars are gone from sale within a month of being advertised: 265 of the 510 first advertised between 11 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £18,980. 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 10 November 2026: valid until 11 September 2027.

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

Advisories at the latest test: rear child seat fitted not allowing full inspection of adult belt; central front undertrays fitted.

Mileage at that test: 30,059 miles, which matches the advertised 31,251 miles.

Advertised mileage is about 18,800 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

13 other 2020 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £13,790 to £19,499, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 26,204 miles. Price: £19,499, £519 more than this car. Dealer: Thurlow Nunn Norwich in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d0c3bdc86b5e
• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 36,684 miles. Price: £18,900, £80 less than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/audi-a3-2020-47bd0de1a310
• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 22,000 miles. Price: £16,490, £2,490 less than this car. Dealer: Swift Cars in Blackwood. AskCar page: https://askcar.co.uk/car/audi-a3-2020-95135ff8fcdb

• The nearest: 2020 Audi A3 S Line, 1.5 petrol saloon, grey, 48 miles from this car. Mileage: 54,806 miles. Price: £16,030, £2,950 less than this car. Dealer: Evans Halshaw MG Banbury in Banbury. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d973fb48c7f9