2021 Audi A3 1.4 TFSIe S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.4 13kWh TFSIe 40 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (201 bhp)
• Year: 2021
• Mileage: 31,877 miles
• Fuel: Plug-in hybrid (petrol)
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.4 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 29 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line is advertised with 31,877 miles, approximately 11,700 below the typical mileage for its age. The AskCar estimate for this car is £18,374. It is priced at £17,999, which is £375 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. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. The seller is Lookers Audi Ayr, based in AYR. 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: £375 (2%) under the AskCar estimate of £18,374.

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 1.4 plug-in hybrid engine is typically advertised at £15,900: the median of the 77 for sale on AskCar, as of 2 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: 403 of the 709 first advertised between 7 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 2 November 2026 at £17,999. 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 2 November 2026: valid until 31 October 2027.

It has had 3 MOTs. The latest, on 6 October 2026, passed.

Advisories at the latest test: nearside front inner brake disc worn, pitted or scored, but not seriously weakened; offside front inner brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 31,946 miles, which matches the advertised 31,877 miles.

Advertised mileage is about 11,700 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

41 other 2021 Audi A3 S Line 1.4 plug-in hybrid automatic hatchbacks are for sale at UK dealers, from £11,600 to £20,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, black. Mileage: 30,252 miles. Price: £18,290, £291 more than this car. Dealer: Sinclair Audi Approved Neyland in Neyland. AskCar page: https://askcar.co.uk/car/audi-a3-2021-d9bd29995a53
• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, white. Mileage: 28,832 miles. Price: £19,499, £1,500 more than this car. Dealer: Hawco Group in Aberdeen. AskCar page: https://askcar.co.uk/car/audi-a3-2021-bcc22a4d6b55
• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, grey. Mileage: 27,471 miles. Price: £18,195, £196 more than this car. Dealer: Motor Range Liverpool in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a3-2021-05a4f7e60e48

• The nearest: 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, black, 28 miles from this car. Mileage: 22,863 miles. Price: £18,998, £999 more than this car. Dealer: Arnold Clark Hillington Renault / Dacia / Alpine / Vanstore in Hillington. AskCar page: https://askcar.co.uk/car/audi-a3-2021-a1373be6b2f0