If your car is overheating, it means the engine temperature is rising beyond safe limits. This is often caused by problems in the cooling system, such as a faulty radiator, water pump, thermostat, or coolant leak. Driving an overheating car can cause severe engine damage, so it should be addressed immediately.

What does it mean if a car is overheating?

Overheating occurs when the engine generates more heat than the cooling system can remove. This can happen due to low coolant, blocked circulation, or failed cooling components. If ignored, overheating can warp the cylinder head, blow the head gasket, or even seize the engine.

Common causes of overheating

• Low coolant level due to leaks
• Faulty thermostat stuck closed
• Broken or leaking radiator
• Failed water pump
• Blocked radiator or coolant passages
• Broken radiator fan or fan switch
• Blown head gasket

Why do you need to fix this problem quickly?

Continuing to drive with an overheating engine can cause catastrophic damage such as cracked engine blocks or warped cylinder heads. Repairing cooling issues early can save thousands of dollars in major engine repairs.

How do you know when to get it checked?

Signs include:

• Temperature gauge rising into the red zone
• Steam coming from the engine bay
• Coolant warning light on the dashboard
• Sweet smell of leaking coolant
• Loss of power or knocking noises from the engine

What happens during an assessment?

A mechanic will:

1. Check coolant level and inspect for leaks
2. Test the thermostat and radiator cap
3. Inspect radiator, hoses, and water pump
4. Check radiator fans and electrical connections
5. Perform a pressure test and head gasket check if necessary
6. Advise on necessary repairs to restore cooling

How much does it cost to fix?

Minor fixes such as topping up coolant or replacing a thermostat may cost $150–$300. Radiator or water pump replacement typically costs $400–$1,200. Head gasket repairs or major engine work can exceed $2,000–$3,500+.

Is it unsafe to drive with an overheating engine?

Yes. Driving with an overheating engine can cause permanent engine failure. If your car overheats, stop safely, turn off the engine, and arrange for inspection or towing.