I am very pleased with my purchase of a certified pre-owned Sonata Hybrid. I have had it for over a month now and have taken it on several trips. I had initial concern with the trunk space, since the seats don't fold down because of the batteries, but found that there was plenty of space for our items. I have been getting great gas mileage for a mid size sedan. On my highway trips, I am averaging 44.5 miles per gallon and overall around 38.5. The ride is smooth and acceleration is great. When quickly accelerating to merge both the engine and the electric motor will assist the car to get up to speed. I also like that the electric motor will assist or take over when holding speed on the highway, even at 70 mile per hour. Thus the increase in gas mileage on the highway. Love the car so far and hope to own it for a long time.
I bought this car on June 15, 2014. On July 14th, it wouldn't start. Had it towed to the dealer. It took them 5 days to find the problem. It was a blown fuse. On August 13th, it wouldn't start again. Towed again to the dealer. Now, 9 days later (when I originally wrote this), they still have it and can't figure out the problem. They said they've had another Sonata Hybrid in the shop with a similar problem for a month. They simply have no idea what's wrong with it or how to get it back on the road! And they told me they're now turning down tows because they don't know how to fix it!
The car is beautiful, has a comfortable and quiet ride. But I'm sorry - none of that matters when you can't start the engine and the dealership and Hyundai engineers can't figure out what the problem is. The dealer told me that during the 9 days mine has been with them that they've had five other hybrids that were going to get towed to them, but they told them not to bring them - they don't know what the problem is and they can't fix it.
Fix the Car! This car is like driving a computer. When the computer crashes the whole car dies. And apparently the computer is so complicated no one - not even the engineers at Hyundai corporate know how to fix it.