2021 Mercedes-Benz A Class prices

This 2021 Mercedes-Benz A Class is no longer listed. Here are similar cars for sale now.

There are 604 used 2021 Mercedes-Benz A Class cars for sale from UK dealers on AskCar, as of 6 November 2026. Typical asking price £17,000 (the median: half cost less, half cost more). The cheapest is £9,795. The middle half are priced between £15,500 and £19,200. Median mileage: about 41,000 miles.

Dealers lowered the asking price on more than a third of 2021 Mercedes-Benz A Class cars: 280 of the 604 in the 14 days to 6 November 2026.

2021 Mercedes-Benz A Class prices by engine and mileage

A 2021 Mercedes-Benz A Class 2.0 diesel car typically costs £17,800, against £16,500 for the 1.3 petrol, as of 6 November 2026.

A 2021 Mercedes-Benz A Class 1.3 petrol car with under 20,000 miles typically costs £18,900, against £13,900 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
1.3 petrol£16,500£18,900£17,500£16,100£13,900
2.0 diesel£17,800£24,000£21,000£17,300£15,000

Only 7 of the 2021 Mercedes-Benz A Class cars for sale have the 1.9 diesel engine, too few to give a typical asking price.

Only 4 of the 2021 Mercedes-Benz A Class cars for sale have the 1.5 diesel engine, too few to give a typical asking price.

2021 Mercedes-Benz A Class prices by trim

TrimTypical asking price, 2021 cars
AMG Line£16,000
AMG Line Executive£16,300
AMG Line Premium Plus£18,200
Exclusive Edition£18,000
AMG Line Premium£17,000
SE£13,400
AMG Line Edition Executive£18,000
Sport ExecutiveToo few for sale
AMG Premium PlusToo few for sale
AMG Line Edition Premium PlusToo few for sale
SportToo few for sale
AMG Line Premium Plus EditionToo few for sale
AMG S PlusToo few for sale
AMG ExecutiveToo few for sale
AMGToo few for sale
AMG Line Executive EditionToo few for sale
AMG PremiumToo few for sale
Sport Executive EditionToo few for sale
PremiumToo few for sale
Premium PlusToo few for sale
Sport Edition ExecutiveToo few for sale
AMG Line Edition PremiumToo few for sale

Only 16 of the 2021 Mercedes-Benz A Class cars for sale are Sport Executive, too few to give a typical asking price.

Only 16 of the 2021 Mercedes-Benz A Class cars for sale are AMG Premium Plus, too few to give a typical asking price.

Only 15 of the 2021 Mercedes-Benz A Class cars for sale are AMG Line Edition Premium Plus, too few to give a typical asking price.

Only 12 of the 2021 Mercedes-Benz A Class cars for sale are Sport, too few to give a typical asking price.

Only 12 of the 2021 Mercedes-Benz A Class cars for sale are AMG Line Premium Plus Edition, too few to give a typical asking price.

Only 10 of the 2021 Mercedes-Benz A Class cars for sale are AMG S Plus, too few to give a typical asking price.

Only 10 of the 2021 Mercedes-Benz A Class cars for sale are AMG Executive, too few to give a typical asking price.

Only 8 of the 2021 Mercedes-Benz A Class cars for sale are AMG, too few to give a typical asking price.

Only 7 of the 2021 Mercedes-Benz A Class cars for sale are AMG Line Executive Edition, too few to give a typical asking price.

Only 6 of the 2021 Mercedes-Benz A Class cars for sale are AMG Premium, too few to give a typical asking price.

Only 6 of the 2021 Mercedes-Benz A Class cars for sale are Sport Executive Edition, too few to give a typical asking price.

Only 5 of the 2021 Mercedes-Benz A Class cars for sale are Premium, too few to give a typical asking price.

Only 5 of the 2021 Mercedes-Benz A Class cars for sale are Premium Plus, too few to give a typical asking price.

Only 5 of the 2021 Mercedes-Benz A Class cars for sale are Sport Edition Executive, too few to give a typical asking price.

Only 4 of the 2021 Mercedes-Benz A Class cars for sale are AMG Line Edition Premium, too few to give a typical asking price.

Typical asking prices are of 2021 Mercedes-Benz A Class cars for sale on 6 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 Mercedes-Benz A Class against other years

A 2020 Mercedes-Benz A Class car has a typical asking price of £15,500 and a 2022 one £19,000, as of 6 November 2026.

AskCar lists 6,957 used Mercedes-Benz A Class across the UK, from 2,702 dealerships.

As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 Mercedes-Benz A Class cars for sale now, page 1 of 12

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. 571 of the 582 cars listed here meet these rules. Pages 2 to 12 list every other 2021 Mercedes-Benz A Class car, cheapest first, including the 11 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 6,765 priced Mercedes-Benz A Class adverts on AskCar as of 6 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Mercedes-Benz A Class.

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

Best value 2021 Mercedes-Benz A Class: priced furthest below the AskCar estimate

These 10 are priced 9% to 21% under their AskCar estimate. Their asking prices run from £11,491 to £27,490.

Cheapest 2021 Mercedes-Benz A Class: the lowest asking prices

These 10 are priced £9,795 to £11,500. They have covered 42,500 to 138,000 miles.

Lowest-mileage 2021 Mercedes-Benz A Class

These 10 have covered 6 to 11,500 miles. Their asking prices run from £17,450 to £32,495.

Recently reduced 2021 Mercedes-Benz A Class: the biggest price reductions in the 14 days to 6 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 6 November 2026. Their reductions since AskCar first saw them run from £2,360 to £4,590.

Newly advertised 2021 Mercedes-Benz A Class: first seen by AskCar in the 7 days to 6 November 2026

These 10 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Mercedes-Benz A Class by gearbox, fuel and body

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2021 Mercedes-Benz A Class by trim

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