Hyundai or Kia: the answer depends on how long you plan to keep the car

Fresh J.D. Power data shows Hyundai leads in the first 90 days, but Kia pulls ahead after three years. Here is what it means for buyers.

Hyundai and Kia are often treated as nearly identical cars: shared platforms, engines, transmissions and electrical components. But the latest reliability numbers show an interesting split — Hyundai is stronger out of the gate, Kia after a few years on the road.

In the J.D. Power Initial Quality Study 2025, Hyundai finished third with 173 problems per 100 vehicles. Kia came in eighth at 181 problems per 100 vehicles. The industry average was 192, so both brands look better than the market.

After three years the picture shifts. In the Vehicle Dependability Study 2026, Kia scored 193 problems per 100 vehicles and Hyundai 198. The gap is small but the message is clear: for a lease or a 2–3 year ownership window, Hyundai is the calmer pick. For longer ownership, Kia comes out slightly ahead on the stats.

There is one weak spot both share. On Hyundai and Kia EVs, complaints cluster around the Integrated Charging Control Unit — the ICCU. It has already turned up on the Hyundai Ioniq 5 and Kia EV6, and later spread to the Ioniq 6 and Genesis GV60. According to Consumer Reports, Kia’s weak point is the EV9, while for Hyundai it is the Sonata Hybrid.

Recalls are a separate detail. NHTSA data shows Hyundai’s average recall completion rate for 2018–2022 was 61.4 percent, roughly in line with the market average. Kia sits at 51.9 percent. That does not mean Kia is built worse, but when buying used you have to run the VIN through the recall database without fail.

Warranty coverage is similar for both brands: 5 years or 60,000 miles bumper-to-bumper, 10 years or 100,000 miles on the powertrain for the original owner, with the same coverage on the battery for hybrids and EVs. For a second owner, however, powertrain coverage drops to 5 years or 60,000 miles.

The takeaway is simple: a new car for a short term — usually Hyundai. A car for the long haul — Kia looks no worse and in places slightly better. For the EVs of either brand, though, start by digging into the ICCU history and checking outstanding recalls.