If your car is experiencing a loss of power, it may struggle to accelerate, feel sluggish on hills, or fail to reach normal speeds. This issue can stem from problems in the fuel system, ignition system, turbocharger, exhaust system, or engine sensors. An inspection is needed to diagnose the cause and restore proper performance.

What does it mean if your car loses power?

Loss of power occurs when the engine is not generating enough energy to meet driving demands. This may be caused by restricted airflow, fuel delivery problems, faulty sensors, or exhaust blockages.

Common causes of loss of power

• Clogged fuel filter or failing fuel pump
• Dirty or faulty mass airflow sensor (MAF)
• Blocked catalytic converter or exhaust system
• Turbocharger issues (for turbocharged engines)
• Ignition coil or spark plug failure
• Vacuum leaks or air intake restrictions
• Faulty EGR valve or throttle body

Why do you need to fix this problem quickly?

Driving with reduced power can be dangerous, especially when merging, overtaking, or climbing steep roads. Ignoring the issue may also cause further damage to the fuel system, ignition system, or catalytic converter.

How do you know when to get it checked?

You should book an inspection if:

• Your car feels sluggish or unresponsive when accelerating
• The engine hesitates, stutters, or misfires
• You notice excessive smoke from the exhaust
• The Check Engine Light comes on
• Fuel economy drops significantly

What happens during an assessment?

A mechanic will:

1. Scan the engine control unit (ECU) for fault codes
2. Inspect the fuel system for clogs or pump failure
3. Check ignition components such as spark plugs and coils
4. Test the turbocharger, throttle body, and airflow sensors
5. Inspect the exhaust and catalytic converter for blockages
6. Repair or replace the faulty components and confirm performance

How much does it cost to fix?

Costs vary depending on the cause. Minor fixes like sensor cleaning or spark plug replacement may cost $150–$400. Fuel system or turbocharger repairs can range from $500–$2,500+.

Is it unsafe to drive with loss of power?

Yes. Loss of power makes it harder to accelerate safely, especially in traffic or on highways. It can also signal serious underlying issues that could cause breakdowns. The vehicle should be inspected promptly.