2021 Audi A3 1.0 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.0 TFSI 30 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (108 bhp)
• Year: 2021
• Mileage: 25,845 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.0 litres, 108 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 25,845 miles, around 17,800 fewer miles than is typical for its age. The AskCar estimate for this car is £18,269. It is priced at £17,210, which is £1,059 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 96 days, and its asking price is down £1,570. We checked its advertised mileage against the government's MOT record, and they match. The seller is Big Motoring World Peterborough, based in Peterborough. 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: £1,059 (5%) under the AskCar estimate of £18,269.

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

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 96 days, and its asking price has been cut by £1,570. 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 29 July 2026 at £18,780. Its asking price is now £17,210, £1,570 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 29 July 2026: £18,780
• 30 July 2026: £18,700
• 31 July 2026: £18,690
• 3 August 2026: £18,400
• 8 August 2026: £18,340
• 11 August 2026: £18,190
• 18 August 2026: £18,030
• 21 August 2026: £18,000
• 26 August 2026: £18,140
• 31 August 2026: £18,020
• 5 September 2026: £18,060
• 9 September 2026: £17,950
• 15 September 2026: £17,790
• 19 September 2026: £17,780
• 23 September 2026: £17,770
• 26 September 2026: £17,780
• 29 September 2026: £17,640
• 30 September 2026: £17,680
• 6 October 2026: £17,640
• 21 October 2026: £17,440
• 27 October 2026: £17,210

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 4 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: 25,086 miles, which matches the advertised 25,845 miles.

Advertised mileage is about 17,800 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

9 other 2021 Audi A3 S Line 1.0 petrol automatic hatchbacks are for sale at UK dealers, from £15,999 to £19,000, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 23,955 miles. Price: £18,070, £860 more than this car. Dealer: Big Motoring World Cannock in Cannock. AskCar page: https://askcar.co.uk/car/audi-a3-2021-6999117dd5f4
• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 27,780 miles. Price: £19,000, £1,790 more than this car. Dealer: Junction Autopark Llandudno in Llandudno. AskCar page: https://askcar.co.uk/car/audi-a3-2021-cbc692b9664c
• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 31,870 miles. Price: £17,995, £785 more than this car. Dealer: The Drivers Gallery in Bromsgrove. AskCar page: https://askcar.co.uk/car/audi-a3-2021-254ff80d0638

• The nearest: 2021 Audi A3 S Line, 1.0 petrol hatchback, grey, 20 miles from this car. Mileage: 31,955 miles. Price: £17,699, £489 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-02008e4d49d3