u/quest1onasker

▲ 15 r/HyundaiTucson+1 crossposts

2025 Tucson Hybrid suddenly lost all power in highway (transmission malfunction), has anyone experienced this?

Hi everyone,

I have a 2025 Hyundai Tucson Hybrid with only around 2,500 km on it, purchased in May 2026, and I just experienced a pretty serious drivetrain/transmission/hybrid-system failure.

I was driving with cruise control (approx. 100km) on the highway when I suddenly felt a noticeable kick/jerk from the car. Immediately afterwards, a transmission error appeared on the dashboard, followed by “Check Hybrid System.” All power to the throttle was gone!

I was able to safely stop the car and luckily there was a highway exit when I lost the ability to throttle. The car remained powered on but it would not move when pressing the gas pedal. After, turning it off and on I was able to move the car a short distance using the electric motor and thankfully park in safe spot.

However, when the petrol engine kicked in, the car started jerking/shuddering badly. Shortly afterwards, I lost all propulsion. The car was still powered on, but it would no longer move.

The car has only 2,500 km, so I’m obviously very concerned and disappointed. It has now gone to the dealer, and I’m waiting for them to diagnose the exact cause.

Has anyone with a 2025/2026 Tucson Hybrid experienced something similar?

If you’ve had this happen, what was the final diagnosis and how did Hyundai fix it?

Tbh my biggest concern now is reliability and whether this will happen again after the fix as it was a big scare in the highway and things could’ve gone horribly wrong if the timing was just a bit different.

Thanks in advance.

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u/quest1onasker — 4 days ago