2021 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) 4dr (148 bhp)
• Year: 2021
• Mileage: 63,956 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 133 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 63,956 miles, this 2021 Audi A3 S Line has covered about 20,700 more miles than other 2021 Audi A3 cars. The AskCar estimate for this car is £15,284. It is priced at £15,895, which is £611 above that estimate. The AskCar estimate uses UK dealer asking prices, including 6,630 Audi A3 adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. The seller is Caffyns Volkswagen Brighton, based in Brighton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £611 (4%) over the AskCar estimate of £15,284.

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 6,630 priced Audi A3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 194 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised today. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 419 of the 741 first advertised between 7 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £15,895. 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 4 November 2026: valid until 22 June 2027.

It has had 3 MOTs. The latest, on 5 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 58,509 miles, which matches the advertised 63,956 miles.

Advertised mileage is about 20,700 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

5 other 2021 Audi A3 S Line 1.5 petrol manual saloons are for sale at UK dealers, from £15,500 to £17,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 64,644 miles. Price: £15,642, £253 less than this car. Dealer: Days Motorpark in Swansea. AskCar page: https://askcar.co.uk/car/audi-a3-2021-19b99c14c8ff
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 54,283 miles. Price: £15,500, £395 less than this car. Dealer: Autotrade (Birmingham) in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f53bd309aa6a
• 2021 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 53,215 miles. Price: £15,799, £96 less than this car. Dealer: cinch in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e12fa792e6c4

• The nearest: 2021 Audi A3 S Line, 1.5 petrol saloon, grey, 89 miles from this car. Mileage: 43,240 miles. Price: £16,988, £1,093 more than this car. Dealer: Group 1 Automotive Audi Approved Colchester in Colchester. AskCar page: https://askcar.co.uk/car/audi-a3-2021-0442467cd700