2021 Audi A3 1.0 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.0 TFSI 30 S Line Manual FWD Euro 6 (s/s) 4dr (108 bhp)
• Year: 2021
• Mileage: 17,547 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.0 litres, 108 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 128 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 17,547 miles, this 2021 Audi A3 S Line has covered about 26,000 fewer miles than other 2021 Audi A3 cars. The dealer is asking £17,300, which is £467 below the AskCar estimate of £17,767. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. It first appeared in our advert records 3 days ago. Our records show an MOT expiry date of 25 October 2026, which has passed. Ask the dealer for an update. Its advertised mileage matches the government's MOT record. The seller is Big Motoring World Sheffield, based in Rotherham. 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: £467 (2%) under the AskCar estimate of £17,767.

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 1.0 petrol engine is typically advertised at £15,000: the median of the 87 for sale on AskCar, as of 2 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised 3 days ago. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 403 of the 709 first advertised between 7 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 30 October 2026 at £17,290. Its asking price is now £17,300, £10 more.

Price changes recorded:

• 30 October 2026: £17,290
• 31 October 2026: £17,310
• 1 November 2026: £17,300

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 25 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 18 October 2025, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge worn to 2.7mm also tyre is worn on inside edge 225/40/R18; offside front tyre worn close to legal limit/worn on edge worn to 2.7mm also tyre is worn on inside edge 225/40/R18; nearside rear tyre has a nail / screw in tread 225/40/R18.

Mileage at that test: 13,889 miles, which matches the advertised 17,547 miles.

Advertised mileage is about 26,000 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

11 other 2021 Audi A3 S Line 1.0 petrol manual saloons are for sale at UK dealers, from £13,299 to £17,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol saloon, black. Mileage: 24,833 miles. Price: £17,990, £690 more than this car. Dealer: Agnew Group Belfast Audi in Belfast. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b6bfef9aaa94
• 2021 Audi A3 S Line, 1.0 petrol saloon, black. Mileage: 33,574 miles. Price: £15,590, £1,710 less than this car. Dealer: Carcart in Willenhall. AskCar page: https://askcar.co.uk/car/audi-a3-2021-62935ace8378
• 2021 Audi A3 S Line, 1.0 petrol saloon, grey. Mileage: 35,018 miles. Price: £16,199, £1,101 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-61cc72f32564

• The nearest: 2021 Audi A3 S Line, 1.0 petrol saloon, white, 31 miles from this car. Mileage: 35,617 miles. Price: £15,895, £1,405 less than this car. Dealer: Motor Range Manchester in Manchester. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f3c4cca44050