There haven't been any major troubles about this car. I've had to replace the exhaust manifold and oxygen sensor which cost ~$200, however, that really improved fuel efficiency. Before, I was getting around 28 mpg, but after I replaced those two, I'm getting 37 mpg on the highway. Because it has a small engine the car does not accelerate fast, however, it is pretty decent. The gas is quite sensitive as it has some special fuel injection system. This is an efficient car, but the seats leave much to be desired, they are a bit stiff. I had to buy padding for them.