Top 10 check-engine-light car repairs
No. 3 car repair: Failing catalytic converter
Average repair cost: 1,101.44
Catalytic converter troubles hold the No. 3 position and rank highly because these parts won't fail unless there is an underlying problem, such as a bad spark plug or faulty ignition coil.
The most expensive repair in the top 10, the cost increased 7 percent over the previous year. CarMD says part of the high cost results from states with stringent emissions requirements, such as California, which drives up the national average.