Used Kia K4 GT Line prices

There are 117 used Kia K4 GT Line cars for sale from UK dealers on AskCar, as of 8 November 2026. Typical asking price £23,500 (the median: half cost less, half cost more). The cheapest is £20,948. The middle half are priced between £23,000 and £24,000.

Dealers lowered the asking price on more than a third of Kia K4 GT Line cars: 51 of the 117 in the 14 days to 8 November 2026.

Kia K4 GT Line prices by year

A 2026 Kia K4 GT Line typically costs £23,500, against £24,000 for all 2026 Kia K4 cars, as of 8 November 2026.

YearTypical asking priceTypical mileage
2026 Kia K4 GT Line£23,5003,000 miles

Typical asking prices are of Kia K4 GT Line cars for sale on 8 November 2026, and are given only where at least 20 cars with a price are for sale.

AskCar lists 280 used Kia K4 across the UK, from 138 dealerships.

As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

Kia K4 GT Line cars for sale now, 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. 111 of the 117 cars listed here meet these rules. Pages 2 to 3 list every other Kia K4 GT Line car, cheapest first, including the 6 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 275 priced Kia K4 adverts on AskCar as of 8 November 2026. The figures on this page describe the cars advertised, not a valuation of every Kia K4 GT Line.

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 Kia K4 GT Line: priced furthest below the AskCar estimate

These 10 are priced 6% to 16% under their AskCar estimate. Their asking prices run from £20,948 to £23,497.

Cheapest Kia K4 GT Line: the lowest asking prices

These 10 are priced £20,948 to £21,995. They have covered 3,250 to 14,476 miles.

Lowest-mileage Kia K4 GT Line

These 10 have covered 1 to 19 miles. Their asking prices run from £23,250 to £27,495.

Recently reduced Kia K4 GT Line: the biggest price reductions in the 14 days to 8 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 8 November 2026. Their reductions since AskCar first saw them run from £4,100 to £7,104.

Newly advertised Kia K4 GT Line: first seen by AskCar in the 7 days to 8 November 2026

These 4 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

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