2021 Audi A3 prices

There are 403 used 2021 Audi A3 cars for sale from UK dealers on AskCar, as of 10 November 2026. Typical asking price £16,700 (the median: half cost less, half cost more). The cheapest is £8,900. The middle half are priced between £14,900 and £18,500. Median mileage: about 43,000 miles.

Dealers lowered the asking price on more than a third of 2021 Audi A3 cars: 189 of the 403 in the 14 days to 10 November 2026.

2021 Audi A3 prices by engine and mileage

A 2021 Audi A3 1.5 petrol car typically costs £17,800, against £15,000 for the 1.0 petrol, as of 10 November 2026.

A 2021 Audi A3 1.5 petrol car with 20,000 to 40,000 miles typically costs £18,600, against £15,500 with 60,000 miles or more.

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
1.5 petrol£17,800Too few for sale£18,600£17,400£15,500
1.0 petrol£15,000Too few for sale£16,100£14,500Too few for sale
1.4 plug-in hybrid£15,900Too few for sale£17,300£15,900£13,400
2.0 diesel£17,400Too few for saleToo few for saleToo few for saleToo few for sale

2021 Audi A3 prices by trim

TrimTypical asking price, 2021 cars
S Line£17,000
Sport£15,000
Technik£13,700
Edition 1£19,800
S Line CompetitionToo few for sale

Only 6 of the 2021 Audi A3 cars for sale are S Line Competition, too few to give a typical asking price.

Typical asking prices are of 2021 Audi A3 cars for sale on 10 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 Audi A3 against other years

A 2020 Audi A3 car has a typical asking price of £15,200 and a 2022 one £17,300, as of 10 November 2026.

AskCar lists 6,789 used Audi A3 across the UK, from 2,285 dealerships.

As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 Audi A3 cars for sale now, page 7 of 8

This page lists 2021 Audi A3 cars not picked out on page 1, cheapest first.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 6,629 priced Audi A3 adverts on AskCar as of 10 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Audi A3.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

This list leaves out 16 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

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Audi A3 by gearbox, fuel and body

Audi A3 prices by year

Audi A3 by trim

2021 Audi A3 by price

2021 Audi A3 by trim

Audi A3 by price

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