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: 23,955 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 23,955 miles, around 19,300 fewer miles than is typical for its age. Priced at £18,080, it is advertised £567 below the AskCar estimate of £18,647. The AskCar estimate uses 6,630 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 26 days ago. Its asking price has since fallen by £560. Our records show an MOT expiry date of 28 April 2026, which has passed. Ask the dealer for an update. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Big Motoring World Cannock, based in Cannock. 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: £567 (3%) under the AskCar estimate of £18,647.

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 1.0 petrol engine is typically advertised at £15,000: the median of the 85 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 26 days.

Price history

AskCar first saw this advert on 9 October 2026 at £18,640. Its asking price is now £18,080, £560 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 9 October 2026: £18,640
• 10 October 2026: £18,630
• 13 October 2026: £18,620
• 14 October 2026: £18,600
• 16 October 2026: £18,510
• 21 October 2026: £18,520
• 22 October 2026: £18,500
• 23 October 2026: £18,320
• 24 October 2026: £18,310
• 25 October 2026: £18,290
• 27 October 2026: £18,280
• 30 October 2026: £18,110
• 31 October 2026: £18,100
• 1 November 2026: £18,070
• 3 November 2026: £18,080

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 28 April 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 29 April 2025, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge 1.6mm; offside front tyre worn close to legal limit/worn on edge 1.6; nearside rear shock absorbers has light misting of oil; and 1 more.

Mileage at that test: 18,954 miles, which matches the advertised 23,955 miles.

Advertised mileage is about 19,300 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 £12,250 to £19,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 25,845 miles. Price: £17,180, £900 less than this car. Dealer: Big Motoring World Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-591fade98d83
• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 27,780 miles. Price: £19,000, £920 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, £85 less than this car. Dealer: The Drivers Gallery in Bromsgrove. AskCar page: https://askcar.co.uk/car/audi-a3-2021-254ff80d0638