2021 Audi A3 1.4 TFSIe S Line Competition

Overview

• Make: Audi
• Model: A3
• Trim: S Line Competition
• Version: 1.4 13kWh TFSIe 45 S Line Competition S tronic FWD Euro 6 (s/s) 5dr Sportback (242 bhp)
• Year: 2021
• Mileage: 48,768 miles
• Fuel: Plug-in hybrid (petrol)
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.4 litres, 242 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 30 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 48,768 miles on the clock, this 2021 Audi A3 S Line Competition has done roughly 5,200 more miles than a typical 2021 Audi A3. The AskCar estimate for this car is £18,218. It is priced at £18,498, which is £280 above 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 have tracked this advert for 29 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Arnold Clark Benton Chery in Longbenton. 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: £280 (1%) over the AskCar estimate of £18,218.

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 29 days.

Price history

AskCar first saw this advert on 4 October 2026 at £18,498. 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 1 October 2027.

It has had 4 MOTs. The latest, on 2 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 48,769 miles, which matches the advertised 48,768 miles.

Advertised mileage is about 5,200 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

6 other 2021 Audi A3 S Line Competition 1.4 plug-in hybrid automatic hatchbacks are for sale at UK dealers, from £13,000 to £21,295, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, black. Mileage: 72,032 miles. Price: £15,991, £2,507 less than this car. Dealer: Cardiff Trade Sales in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a3-2021-421b4f519b80
• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, white. Mileage: 22,056 miles. Price: £20,900, £2,402 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8bedd48d14ed
• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, grey. Mileage: 75,605 miles. Price: £15,570, £2,928 less than this car. Dealer: Evans Halshaw BYD Rotherham in Rotherham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-a4a69cc1e7ec