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: 28,396 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: Black
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 28,396 miles, this 2021 Audi A3 S Line has covered about 14,000 fewer miles than other 2021 Audi A3 cars. The dealer is asking £18,490, which is £153 above the AskCar estimate of £18,337. To work out the AskCar estimate, we analyse UK dealer adverts for 6,729 Audi A3 cars across different ages and specifications. It first appeared in our advert records today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stratstone Tamworth Audi, based in Tamworth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £153 (under 1%) over the AskCar estimate of £18,337.

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 6,729 priced Audi A3 adverts across different ages and specifications, as of 6 November 2026.

A 2021 Audi A3 with the 1.0 petrol engine is typically advertised at £15,000: the median of the 92 for sale on AskCar, as of 6 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: 433 of the 772 first advertised between 7 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £18,490. 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 6 November 2026: valid until 12 December 2026.

It has had 2 MOTs. The latest, on 21 November 2025, passed.

Advisories at the latest test: nearside rear tyre slightly damaged/cracking or perishing; offside front tyre worn close to legal limit/worn on edge worn on edge.

Mileage at that test: 24,227 miles, which matches the advertised 28,396 miles.

Advertised mileage is about 14,000 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 automatic hatchbacks are for sale at UK dealers, from £12,250 to £19,000, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 27,780 miles. Price: £19,000, £510 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: 25,845 miles. Price: £17,180, £1,310 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: 31,870 miles. Price: £17,995, £495 less 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, white, 14 miles from this car. Mileage: 23,955 miles. Price: £17,940, £550 less than this car. Dealer: Big Motoring World Cannock in Cannock. AskCar page: https://askcar.co.uk/car/audi-a3-2021-6999117dd5f4