2021 Mercedes-Benz GLC prices

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

There are 151 used 2021 Mercedes-Benz GLC cars for sale from UK dealers on AskCar, as of 6 November 2026. Typical asking price £25,500 (the median: half cost less, half cost more). The cheapest is £18,240. The middle half are priced between £23,000 and £29,000. Median mileage: about 48,000 miles.

Dealers lowered the asking price on more than a third of 2021 Mercedes-Benz GLC cars: 74 of the 151 in the 14 days to 6 November 2026.

2021 Mercedes-Benz GLC prices by engine and mileage

A 2021 Mercedes-Benz GLC 2.0 diesel car with 20,000 to 40,000 miles typically costs £27,500, against £21,000 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
2.0 diesel£25,000Too few for sale£27,500£25,000£21,000

Only 13 of the 2021 Mercedes-Benz GLC cars for sale have the 3.0 petrol engine, too few to give a typical asking price.

Only 6 of the 2021 Mercedes-Benz GLC cars for sale have the 4.0 petrol engine, too few to give a typical asking price.

Only 3 of the 2021 Mercedes-Benz GLC cars for sale have the 1.9 plug-in hybrid engine, too few to give a typical asking price.

2021 Mercedes-Benz GLC prices by trim

TrimTypical asking price, 2021 cars
AMG Line Premium£25,000
AMG Line£23,500
AMG Line Premium Plus£27,500
AMG Premium PlusToo few for sale
SportToo few for sale
Premium PlusToo few for sale
AMG PremiumToo few for sale

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

Only 1 of the 2021 Mercedes-Benz GLC cars for sale are Sport, too few to give a typical asking price.

Only 1 of the 2021 Mercedes-Benz GLC cars for sale are Premium Plus, too few to give a typical asking price.

Only 1 of the 2021 Mercedes-Benz GLC cars for sale are AMG Premium, too few to give a typical asking price.

Typical asking prices are of 2021 Mercedes-Benz GLC 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 GLC against other years

A 2020 Mercedes-Benz GLC car has a typical asking price of £23,000 and a 2022 one £28,000, as of 6 November 2026.

AskCar lists 2,951 used Mercedes-Benz GLC across the UK, from 1,187 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 GLC cars for sale now, page 1 of 4

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. 137 of the 144 cars listed here meet these rules. Pages 2 to 4 list every other 2021 Mercedes-Benz GLC car, cheapest first, including the 7 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 2,918 priced Mercedes-Benz GLC 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 GLC.

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

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

These 10 are priced 9% to 20% under their AskCar estimate. Their asking prices run from £18,240 to £23,800.

Cheapest 2021 Mercedes-Benz GLC: the lowest asking prices

These 10 are priced £18,240 to £19,498. They have covered 72,901 to 107,350 miles.

Lowest-mileage 2021 Mercedes-Benz GLC

These 10 have covered 18,000 to 26,000 miles. Their asking prices run from £26,989 to £65,995.

Recently reduced 2021 Mercedes-Benz GLC: 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 £2,700 to £6,000.

Newly advertised 2021 Mercedes-Benz GLC: 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 GLC by gearbox, fuel and body

Mercedes-Benz GLC prices by year

Mercedes-Benz GLC by trim

2021 Mercedes-Benz GLC by price

2021 Mercedes-Benz GLC by trim

Mercedes-Benz GLC by price

Mercedes-Benz GLC near you

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