2021 Audi A3 Technik prices

There are 40 used 2021 Audi A3 Technik cars for sale from UK dealers on AskCar, as of 4 November 2026. Typical asking price £13,700 (the median: half cost less, half cost more). The cheapest is £9,200. The middle half are priced between £12,000 and £15,000. Median mileage: about 53,000 miles.

Dealers lowered the asking price on more than a third of 2021 Audi A3 Technik cars: 16 of the 40 in the 14 days to 4 November 2026.

2021 Audi A3 Technik prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
1.0 petrol£13,600Too few for saleToo few for saleToo few for saleToo few for sale

Only 12 of the 2021 Audi A3 Technik cars for sale have the 1.5 petrol engine, too few to give a typical asking price.

Only 6 of the 2021 Audi A3 Technik cars for sale have the 2.0 diesel engine, too few to give a typical asking price.

Typical asking prices are of 2021 Audi A3 Technik cars for sale on 4 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 Audi A3 Technik against other years

A 2020 Audi A3 Technik car has a typical asking price of £13,000 and a 2022 one £15,000, as of 4 November 2026.

AskCar lists 6,774 used Audi A3 across the UK, from 2,309 dealerships.

As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 Audi A3 Technik cars for sale now, page 1 of 2

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 34 of the 35 cars listed here meet these rules. Page 2 lists every other 2021 Audi A3 Technik car, cheapest first, including the one the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 6,630 priced Audi A3 adverts on AskCar as of 4 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Audi A3 Technik.

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 5 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2021 Audi A3 Technik: priced furthest below the AskCar estimate

These 10 are priced 4% to 19% under their AskCar estimate. Their asking prices run from £11,990 to £18,199.

Cheapest 2021 Audi A3 Technik: the lowest asking prices

These 10 are priced £9,200 to £12,499. They have covered 65,631 to 135,000 miles.

Lowest-mileage 2021 Audi A3 Technik

These 10 have covered 9,146 to 32,879 miles. Their asking prices run from £14,457 to £18,230.

Recently reduced 2021 Audi A3 Technik: the biggest price reductions in the 14 days to 4 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 4 November 2026. Their reductions since AskCar first saw them run from £455 to £3,230.

Newly advertised 2021 Audi A3 Technik: first seen by AskCar in the 7 days to 4 November 2026

This car is the most recently advertised.

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