2024 Mazda CX-30 prices under £20,000

There are 140 used 2024 Mazda CX-30 cars for sale under £20,000 from UK dealers on AskCar, as of 10 November 2026. Typical asking price £17,600 (the median: half cost less, half cost more). The cheapest is £11,990. The middle half are priced between £16,000 and £18,700. Median mileage: about 21,000 miles.

Dealers lowered the asking price on more than half of 2024 Mazda CX-30 cars under £20,000: 76 of the 140 in the 14 days to 10 November 2026.

AskCar lists 1,552 used Mazda CX-30 across the UK, from 528 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.

2024 Mazda CX-30 cars for sale now under £20,000, 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 140 cars listed here meet these rules. Pages 2 to 4 list every other 2024 Mazda CX-30 car, cheapest first, including the 3 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 1,531 priced Mazda CX-30 adverts on AskCar as of 10 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2024 Mazda CX-30.

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.

Best value 2024 Mazda CX-30: priced furthest below the AskCar estimate

These 10 are priced 6% to 13% under their AskCar estimate. Their asking prices run from £12,995 to £19,995.

Cheapest 2024 Mazda CX-30: the lowest asking prices

These 10 are priced £12,995 to £14,195. They have covered 28,982 to 63,480 miles.

Lowest-mileage 2024 Mazda CX-30

These 10 have covered 300 to 7,631 miles. Their asking prices run from £16,699 to £19,995.

Recently reduced 2024 Mazda CX-30: the biggest price reductions in the 14 days to 10 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 10 November 2026. Their reductions since AskCar first saw them run from £2,000 to £4,500.

Newly advertised 2024 Mazda CX-30: first seen by AskCar in the 7 days to 10 November 2026

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

Mazda CX-30 by gearbox, fuel and body

Mazda CX-30 under £20,000 by gearbox, fuel and body

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