Hyundai IONIQ 9 vs Kia EV9

The Kia EV9 costs £1,650 more than the Hyundai IONIQ 9. On the headline specs that premium buys little measurable advantage - the two are closely matched on range, charging and space. The Hyundai IONIQ 9 is not just cheaper - it also offers 36 miles more WLTP range. On EVcarsguide's combined category scores, the Hyundai IONIQ 9 comes out ahead overall.

The Hyundai IONIQ 9 is £1,650 cheaper to buy. Running costs are almost identical - about £192 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Hyundai IONIQ 9 comes out roughly £1,650 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.

EVcarsguide estimates a real-world motorway range of about 321 miles for the Hyundai IONIQ 9 and 291 miles for the Kia EV9 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Hyundai IONIQ 9 goes roughly 30 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 24-24 minutes.

The two are within 0 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 420 mm of total clearance for the Hyundai IONIQ 9 and about 420 mm of total clearance for the Kia EV9.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 89% battery health for the Hyundai IONIQ 9 and 89% for the Kia EV9. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation.