How many miles change the glow plugs?

Glow plugs typically need to be replaced every 60,000 to 100,000 miles, depending on the vehicle and driving conditions. However, it’s essential to consult your vehicle's owner manual for specific recommendations. If you notice starting issues or rough idling in colder temperatures, it may indicate that the glow plugs need to be checked or replaced sooner. Regular maintenance can help ensure optimal performance of your diesel engine.