4. Hyundai Elantra
Hyundai is one brand that’s been storming ahead over the last decade. The company’s vehicles used to be the automotive equivalent of a one-time-use camera, but today they’re building some remarkably good products. The Elantra compact car is one such vehicle. Unfortunately reliability is not one of its virtues. According to the folks at J.D. Power the 2010 model fell 51 points in their annual dependability study. That works out to 157 problems per 100 vehicles, which is considerably below average.