Why wont your car start even though the glow plugs have been changed?

Glow plugs are only used in diesel engines to aid in starting the engine in cold weather. If your car has a gasoline engine, glow plugs are not used and therefore cannot be the cause of your car not starting. There are many other potential causes for a car not starting, such as a dead battery, faulty starter, or fuel delivery issues. It is recommended to have the car diagnosed by a qualified mechanic to determine the exact cause of the problem.