 My Sonata PHEV had Hybrid System failed not once, but twice within a span of 1.5 months. It's been hardly 1.5 years since I had bought this car. In both cases the Check Hybrid system warning comes up and Engine looses power. The 1st time it happened, it was in the middle of a busy freeway and was left all of a sudden with no power on the engine. Extremely dangerous and life threatening problem to face with. The 2nd time it happened it was on a 3 lane local Parkway still dangerous as I am left with no power to control the car. The car had to be towed to the dealership in both cases. The dealership took 1 month to fix the car the 1st time, it ran for close to 1.5 months and again the same problem and its back at the dealership. Now they want another month to fix it!!! Highly unreliable car, imagine getting this problem in the middle of nowhere, this car cannot be trusted. It's a Lemon.