2021 Audi A3 1.4 TFSIe S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.4 40 TFSI e S Line S tronic FWD Euro 6 5dr (201 bhp)
• Year: 2021
• Mileage: 21,377 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: 26 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line is advertised with 21,377 miles, approximately 22,200 below the typical mileage for its age. Its asking price of £18,449 is £526 below the AskCar estimate of £18,975. The AskCar estimate draws on 6,705 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. The seller is Citygate Kia Watford, based in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £526 (2%) under the AskCar estimate of £18,975.

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 6,705 priced Audi A3 adverts across different ages and specifications, as of 12 November 2026.

A 2021 Audi A3 with the 1.4 plug-in hybrid engine is typically advertised at £15,900: the median of the 79 for sale on AskCar, as of 12 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: 465 of the 830 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 12 November 2026 at £18,449. 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 12 November 2026: valid until 29 June 2027.

It failed its MOT on 18 June 2026 (nearside front inner tyre has ply or cords exposed) and passed 1 day later, on 19 June 2026.

There were no advisories at the latest test.

Mileage at that test: 19,417 miles, which matches the advertised 21,377 miles.

Advertised mileage is about 22,200 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

40 other 2021 Audi A3 S Line 1.4 plug-in hybrid automatic hatchbacks are for sale at UK dealers, from £11,400 to £21,995, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, blue. Mileage: 21,341 miles. Price: £17,615, £834 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e48aecdc86db
• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, white. Mileage: 21,000 miles. Price: £20,990, £2,541 more than this car. Dealer: Car Sales in New Malden. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8254f3fd95df
• 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, black. Mileage: 22,863 miles. Price: £18,998, £549 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

• The nearest: 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, grey, 13 miles from this car. Mileage: 77,000 miles. Price: £14,394, £4,055 less than this car. Dealer: Parkway Commercials in Feltham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-98944c3d942f