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: 14,461 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

This 2021 Audi A3 S Line Competition has covered 14,461 miles, around 29,100 fewer miles than is typical for its age. The dealer is asking £21,295, which is £252 below the AskCar estimate of £21,548. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. We first saw this car advertised 45 days ago. Its asking price has since fallen by £155. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Group 1 Automotive Chingford Audi, based in Chingford. 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: £252 (1%) under the AskCar estimate of £21,548.

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 45 days.

Price history

AskCar first saw this advert on 18 September 2026 at £21,450. Its asking price is now £21,295, £155 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 27 October 2026: £21,450
• 1 November 2026: £21,295

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 14 July 2027.

It has had 3 MOTs. The latest, on 10 July 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge; nearside front tyre slightly damaged/cracking or perishing; and 2 more.

Mileage at that test: 13,971 miles, which matches the advertised 14,461 miles.

Advertised mileage is about 29,100 miles lower 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 £20,900, 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, blue. Mileage: 10,000 miles. Price: £18,750, £2,545 less than this car. Dealer: Kneeton Hill in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-776d9b0ab169
• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, white. Mileage: 22,056 miles. Price: £20,900, £395 less 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, white. Mileage: 48,768 miles. Price: £18,498, £2,797 less than this car. Dealer: Arnold Clark Benton Chery in Benton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-eb2bebedc011

• The nearest: 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, black, 26 miles from this car. Mileage: 113,000 miles. Price: £13,000, £8,295 less than this car. Dealer: Car Solutions Bedfordshire in Luton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e493583a0659