What a used Kia K4 costs

Kia K4 price by model year

A spread near 1.5× means the market agrees what a Kia K4 of that year is worth. Past 3× the listings mix tidy examples with tired ones, and a careful buyer can do well — but the exact figure for one car depends on its mileage and history, which is what the valuation tool is for.

Dealer or private seller

Both figures are measured against the median for the same model year, so age is out of the comparison and what remains is the markup itself.

How fast price falls with mileage

Taken from a single model year — 2025, the one with the most Kia K4 listings — so the curve shows mileage alone rather than age creeping in alongside it. Between the 0–25k and 25–50k bands the asking price falls 15%.

Between the lowest and highest mileage bands the asking price falls 15%. Most of that drop happens early: the first hundred thousand miles cost far more than the second.

How we count

The Kia K4 figures here come from 115 live listings, 2025–2026 — asking prices, not sale prices. Sellers ask more than they get, so treat these as the top of the range, not the bottom.

Percentages here are never plain averages: each listing is first turned into its ratio against the median for its own model year, and those ratios are averaged instead. Without that step the numbers lie confidently — a flat average across 2025–2026 would mostly measure which years happen to be for sale this week. Slices too thin to survive the test are dropped rather than dressed up with an error bar, which for the Kia K4 leaves 1 model years standing. The full method, with the traps it avoids →