Light car repair - Bad spark plugs and wires
Replacing a spark plug can cost just $10 if you do it yourself, but drivers spend $361 on average to have spark plugs and wires replaced by a technician. When these items fail, they can cause the engine to misfire and your gas mileage to decline. Ignoring the problem can result in permanent damage to your car's catalytic converter.
Average repair cost: $361
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