2020 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line Manual FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2020
• Mileage: 29,105 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 29,105 miles, this 2020 Audi A3 S Line has covered about 21,300 fewer miles than other 2020 Audi A3 cars. The dealer is asking £16,699, which is £630 below the AskCar estimate of £17,329. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. Since we first spotted the advert 31 days ago, the asking price has dropped by £591. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Swansway Garages in Bolton. 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: £630 (3%) under the AskCar estimate of £17,329.

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 31 days.

Price history

AskCar first saw this advert on 2 October 2026 at £17,290. Its asking price is now £16,699, £591 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 2 October 2026: £17,290
• 11 October 2026: £16,491
• 13 October 2026: £16,799
• 27 October 2026: £16,699

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 8 July 2027.

It has had 4 MOTs. The latest, on 6 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 27,986 miles, which matches the advertised 29,105 miles.

Advertised mileage is about 21,300 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

30 other 2020 Audi A3 S Line 1.5 petrol manual hatchbacks are for sale at UK dealers, from £11,995 to £18,020, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 27,754 miles. Price: £15,895, £804 less than this car. Dealer: Stratstone Bolton Audi in Bolton. AskCar page: https://askcar.co.uk/car/audi-a3-2020-541c0469b090
• 2020 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 26,325 miles. Price: £16,994, £295 more than this car. Dealer: Hilton Car Supermarket Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2020-7fec0d985e11
• 2020 Audi A3 S Line, 1.5 petrol hatchback, red. Mileage: 32,203 miles. Price: £15,990, £709 less than this car. Dealer: Johnsons Hyundai Slough in Slough. AskCar page: https://askcar.co.uk/car/audi-a3-2020-a12d786e2725