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) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 33,741 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line is advertised with 33,741 miles, approximately 9,500 below the typical mileage for its age. The dealer is asking £17,695, which is £292 above the AskCar estimate of £17,403. To work out the AskCar estimate, we analyse UK dealer adverts for 6,630 Audi A3 cars across different ages and specifications. We first recorded this car for sale today. The government's MOT record matches its advertised mileage. You can find this car at Hawco Group in Dundee. 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: £292 (1%) over the AskCar estimate of £17,403.

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 £17,695. 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 29 April 2027.

It has had 3 MOTs. The latest, on 17 April 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge 2-3mm.

Mileage at that test: 31,979 miles, which matches the advertised 33,741 miles.

Advertised mileage is about 9,500 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

22 other 2021 Audi A3 S Line 1.5 petrol manual hatchbacks are for sale at UK dealers, from £12,795 to £18,490, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 34,973 miles. Price: £16,995, £700 less than this car. Dealer: Carite in Swindon. AskCar page: https://askcar.co.uk/car/audi-a3-2021-4bc74adb4490
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 36,065 miles. Price: £15,990, £1,705 less than this car. Dealer: Carworld Car Supermarket in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8262eb5d5772
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 30,408 miles. Price: £18,490, £795 more than this car. Dealer: Harwoods Southampton Audi in Southampton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f4f13ee81afb

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, black, 33 miles from this car. Mileage: 71,881 miles. Price: £14,495, £3,200 less than this car. Dealer: Simpson Motors in Dunfermline. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8d006f3aef1a