2021 Audi A3 1.5 TFSI Sport

Overview

• Make: Audi
• Model: A3
• Trim: Sport
• Version: 1.5 TFSI 35 Sport S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 23,681 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: Silver
• CO2: 130 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 23,681 miles on the clock, this 2021 Audi A3 Sport has done roughly 19,900 fewer miles than a typical 2021 Audi A3. Priced at £18,485, it is advertised £47 below the AskCar estimate of £18,532. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. We have tracked this advert for 39 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is SERE Motors Belfast, based in Belfast. 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: £47 (under 1%) under the AskCar estimate of £18,532.

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 39 days.

Price history

AskCar first saw this advert on 24 September 2026 at £18,485. 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 11 November 2026.

It has had 2 MOTs. The latest, on 5 November 2025, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge worn inner edge; offside front tyre worn close to legal limit/worn on edge worn inner edge.

Mileage at that test: 20,123 miles, which matches the advertised 23,681 miles.

Advertised mileage is about 19,900 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

7 other 2021 Audi A3 Sport 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £12,750 to £18,738, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 Sport, 1.5 petrol hatchback, blue. Mileage: 23,219 miles. Price: £18,738, £253 more than this car. Dealer: Days HaverfordWest in Haverfordwest. AskCar page: https://askcar.co.uk/car/audi-a3-2021-4e5c78c4d9f6
• 2021 Audi A3 Sport, 1.5 petrol hatchback, blue. Mileage: 31,000 miles. Price: £17,695, £790 less than this car. Dealer: Group 1 Automotive Audi Harold Wood in Harold Wood. AskCar page: https://askcar.co.uk/car/audi-a3-2021-c1e85c2e0db9
• 2021 Audi A3 Sport, 1.5 petrol hatchback, red. Mileage: 34,458 miles. Price: £16,892, £1,593 less than this car. Dealer: Stellantis &You Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-2021-6ac8489b2348

• The nearest: 2021 Audi A3 Sport, 1.5 petrol hatchback, silver, 127 miles from this car. Mileage: 53,000 miles. Price: £15,995, £2,490 less than this car. Dealer: Poolfoot Car Centre in Fleetwood. AskCar page: https://askcar.co.uk/car/audi-a3-2021-32db5168e6c8