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: 33,600 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: Grey
• CO2: 30 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line Competition is advertised with 33,600 miles, approximately 8,700 below the typical mileage for its age. The AskCar estimate for this car is £19,590. It is priced at £19,865, which is £275 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,691 Audi A3 cars across different ages and specifications. It first appeared in our advert records today. Its advertised mileage matches the government's MOT record. The seller is Lookers Audi Tyneside, based in Wallsend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £275 (1%) over the AskCar estimate of £19,590.

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 6,691 priced Audi A3 adverts across different ages and specifications, as of 7 November 2026.

A 2021 Audi A3 with the 1.4 plug-in hybrid engine is typically advertised at £16,000: the median of the 81 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised today. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 440 of the 781 first advertised between 7 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £19,865. 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 7 November 2026: valid until 10 April 2027.

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

There were no advisories at the latest test.

Mileage at that test: 27,340 miles, which matches the advertised 33,600 miles.

Advertised mileage is about 8,700 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 £21,295, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, white. Mileage: 22,056 miles. Price: £20,700, £835 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, white. Mileage: 48,776 miles. Price: £17,998, £1,867 less than this car. Dealer: Arnold Clark Benton Chery in Benton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-eb2bebedc011
• 2021 Audi A3 S Line Competition, 1.4 plug-in hybrid hatchback, white. Mileage: 14,461 miles. Price: £21,295, £1,430 more than this car. Dealer: Group 1 Automotive Chingford Audi in Chingford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-31864666757c