2025 Mazda CX-30 prices under £20,000

There are 133 used 2025 Mazda CX-30 cars for sale under £20,000 from UK dealers on AskCar, as of 9 November 2026. Typical asking price £17,500 (the median: half cost less, half cost more). The cheapest is £14,468. The middle half are priced between £16,700 and £18,500. Median mileage: about 24,000 miles.

Dealers lowered the asking price on more than half of 2025 Mazda CX-30 cars under £20,000: 68 of the 133 in the 14 days to 9 November 2026.

AskCar lists 1,520 used Mazda CX-30 across the UK, from 505 dealerships.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2025 Mazda CX-30 cars for sale now under £20,000, page 1 of 3

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. 131 of the 133 cars listed here meet these rules. Pages 2 to 3 list every other 2025 Mazda CX-30 car, cheapest first, including the 2 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 1,499 priced Mazda CX-30 adverts on AskCar as of 9 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2025 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 2025 Mazda CX-30: priced furthest below the AskCar estimate

These 10 are priced 11% to 15% under their AskCar estimate. Their asking prices run from £14,999 to £16,980.

Cheapest 2025 Mazda CX-30: the lowest asking prices

These 10 are priced £14,468 to £15,798. They have covered 8,187 to 39,343 miles.

Lowest-mileage 2025 Mazda CX-30

These 10 have covered 1 to 4,712 miles. Their asking prices run from £16,790 to £19,998.

Recently reduced 2025 Mazda CX-30: the biggest price reductions in the 14 days to 9 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 9 November 2026. Their reductions since AskCar first saw them run from £2,368 to £4,279.

Newly advertised 2025 Mazda CX-30: first seen by AskCar in the 7 days to 9 November 2026

These 5 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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