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: 19,757 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: White
• CO2: 29 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 19,757 miles, this 2021 Audi A3 S Line has covered about 23,800 fewer miles than other 2021 Audi A3 cars. The dealer is asking £17,750, which is £1,649 below the AskCar estimate of £19,399. 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 73 days, and its asking price has been cut by £604. Its advertised mileage matches the government's MOT record. The seller is Hilton Car Supermarket Milton Keynes, based in Milton Keynes. 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

Good value: £1,649 (8%) under the AskCar estimate of £19,399.

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

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 73 days, and its asking price has been cut by £604. 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 21 August 2026 at £18,354. Its asking price is now £17,750, £604 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 21 August 2026: £18,354
• 4 September 2026: £18,635
• 5 September 2026: £18,740
• 8 September 2026: £18,745
• 9 September 2026: £18,650
• 12 September 2026: £18,595
• 18 September 2026: £18,565
• 20 September 2026: £18,635
• 22 September 2026: £18,540
• 23 September 2026: £18,545
• 29 September 2026: £18,675
• 1 October 2026: £18,660
• 4 October 2026: £18,665
• 8 October 2026: £18,460
• 14 October 2026: £18,370
• 17 October 2026: £18,400
• 19 October 2026: £18,150
• 23 October 2026: £18,145
• 26 October 2026: £18,140
• 29 October 2026: £17,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 25 June 2027.

It has had 3 MOTs. The latest, on 24 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 19,667 miles, which matches the advertised 19,757 miles.

Advertised mileage is about 23,800 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, white. Mileage: 21,000 miles. Price: £20,990, £3,240 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, blue. Mileage: 21,341 miles. Price: £17,842, £92 more 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, grey. Mileage: 18,021 miles. Price: £18,500, £750 more than this car. Dealer: Turners Of Roborough in Plymouth. AskCar page: https://askcar.co.uk/car/audi-a3-2021-80e3483c4d8f

• The nearest: 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, white, 13 miles from this car. Mileage: 99,572 miles. Price: £11,600, £6,150 less than this car. Dealer: Quality Part X Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/audi-a3-2021-05918e73ba53