Used automatic MG MG3 for sale under £20,000

There are 830 used automatic MG MG3 under £20,000 for sale from UK dealers on AskCar, as of 10 November 2026. Typical asking price £16,000 (the median: half cost less, half cost more). The cheapest is £9,499. AskCar lists 1,872 used MG MG3 across the UK, from 657 dealerships.

The middle half of the 830 cars are priced between £15,000 and £17,000.

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.

313 of the 830 cars had their price reduced in the last 14 days to 10 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
2026450£16,800£16,000 to £18,000
2025250£15,200£14,800 to £15,700
2024127£14,100£13,700 to £14,500

Cars for sale now, page 5 of 9

Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 1,818 priced MG MG3 adverts on AskCar as of 10 November 2026.

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.

Cheaper cars like each one, with its price history, are on its AskCar page.

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