2021 Audi A3 1.4 TFSIe S Line
Price: £16,950. Fair price: £816 (4%) under the AskCar estimate of £17,766, 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: 38,151 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: Grey
- CO2: 29 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 38,151 miles, this 2021 Audi A3 S Line has covered about 5,400 fewer miles than other 2021 Audi A3 cars. Its asking price of £16,950 is £816 below the AskCar estimate of £17,766. The AskCar estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 11 days ago. Its advertised mileage matches the government's MOT record. The seller is Danson Motors, based in Sidcup. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £816 (4%) under the AskCar estimate of £17,766.
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 11 days.
Price history
AskCar first saw this advert on 22 October 2026 at £16,950. 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 21 April 2027.
It has had 4 MOTs. The latest, on 13 April 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 35,742 miles, which matches the advertised 38,151 miles.
Advertised mileage is about 5,400 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, grey. Mileage: 38,000 miles. Price: £17,250, £300 more than this car. Dealer: David Hayton Autostore Penrith in Penrith. AskCar page: https://askcar.co.uk/car/audi-a3-2021-7652e5b39ab7
- 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, black. Mileage: 36,700 miles. Price: £16,490, £460 less than this car. Dealer: BSB Automotive in Dartford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-06ee7380c3b8
- 2021 Audi A3 S Line, 1.4 plug-in hybrid hatchback, blue. Mileage: 39,628 miles. Price: £16,799, £151 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b311307ea622
Browse all Audi A3 cars for sale · 2021 Audi A3 price guide
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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.