2021 Audi A3 1.4 TFSIe S Line
Price: £16,997. Fair price: £584 (3%) under the AskCar estimate of £17,581, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,542 priced Audi A3 adverts on AskCar as of 2 November 2026.
AskCar lists 6,720 used Audi A3 from 2,302 UK dealerships, as of 2 November 2026.
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: 40,093 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: Black
- CO2: 29 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 40,093 miles, this 2021 Audi A3 S Line has covered about 3,500 fewer miles than other 2021 Audi A3 cars. Its asking price of £16,997 is £584 below the AskCar estimate of £17,581. The AskCar estimate draws on 6,542 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 99 days ago. The recorded MOT expired on 3 September 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £584 (3%) under the AskCar estimate of £17,581.
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
This 2021 Audi A3 has been on sale for at least 99 days.
Price history
AskCar first saw this advert on 26 July 2026 at £16,997. 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: the latest record we hold ran out on 3 September 2026; ask the dealer for the current MOT.
It has had 2 MOTs. The latest, on 4 September 2025, passed.
There were no advisories at the latest test.
Mileage at that test: 39,246 miles, which matches the advertised 40,093 miles.
Advertised mileage is about 3,500 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, blue. Mileage: 39,628 miles. Price: £16,799, £198 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b311307ea622
- 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, grey. Mileage: 41,745 miles. Price: £16,995, the same price as this car. Dealer: NEO Motor Company in Warrington. AskCar page: https://askcar.co.uk/car/audi-a3-2021-483213366faa
- 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, grey. Mileage: 38,151 miles. Price: £16,950, the same price as this car. Dealer: Danson Motors in Sidcup. AskCar page: https://askcar.co.uk/car/audi-a3-2021-51b80b2fa607
Browse all Audi A3 cars for sale · 2021 Audi A3 price guide
More like this
- Used Audi A3 S Line prices
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- Used automatic Audi A3 for sale
- Used plug-in hybrid Audi A3 for sale
Photos
27 photos of this car are on its AskCar page.
As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.