How to calculate the vehicle breakdown rate and intact rate?

Automobile failure is the car can not complete its function of the phenomenon, such as the engine starting difficulty, not car, car oil leakage, water leakage, lighting system failure. The car has a fault on the performance, the common fault performance: sudden change in working conditions, sound anomalies, odor anomalies, smoke anomalies, temperature anomalies, appearance anomalies, fuel, lubricant consumption anomalies, there is a leakage.