Sports cars may be high-performance machines, but they are also expected to be well-balanced and agile. An overly strong focus on performance numbers and stylish design can result in a lack of reliability, as observed in the case of sports cars like the Pontiac Solstice. This could result in higher maintenance costs, which can turn any ordinary sports car into the most expensive car to own due to perpetual trips to the service and repair center. Fortunately, there are several reliable cars on the used car marketplace that don't break the bank when it comes to maintenance and repair costs.