2021 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) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 59,270 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line is advertised with 59,270 miles, approximately 15,700 above the typical mileage for its age. The dealer is asking £16,989, which is £334 above the AskCar estimate of £16,655. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The asking price is now £500 lower than when we first recorded the advert 158 days ago. Our latest MOT record expired on 24 March 2026. Check the current position with the dealer. The government's MOT record matches its advertised mileage. You can find this car at Autobarn Motor Company in Burnley. 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: £334 (2%) over the AskCar estimate of £16,655.

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 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 191 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £17,489. Its asking price is now £16,989, £500 less. The latest price cut was seen on 24 June 2026.

Price changes recorded:

• 28 May 2026: £17,489
• 24 June 2026: £16,989

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 24 March 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 8 March 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 54,865 miles, which matches the advertised 59,270 miles.

Advertised mileage is about 15,700 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

49 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,990 to £21,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 58,985 miles. Price: £16,400, £589 less than this car. Dealer: Sytner Select Nottingham in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-5ed414bf4cce
• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 58,857 miles. Price: £16,995, the same price as this car. Dealer: Independent Motor Group in Burnley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-23cd15e99de4
• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 57,000 miles. Price: £16,989, the same price as this car. Dealer: Autoworld Norbury ( London) in London. AskCar page: https://askcar.co.uk/car/audi-a3-2021-3b7c94796575