What do owners say it led to?

Among the 2,782 owner complaints naming this part, owners most often say engine damage followed.

What owners say happened after the problem. Engine damage: 129 (5%); Loss of power: 76 (3%); Stalled while driving: 12 (0%).

If your car shows the signs above, get it checked before it gets as far as engine damage.

Source: NHTSA owner complaint files · file downloaded 2026-10-05

Data and chart by CalcScrape: Spark Plug Replacement Cost Calculator