Misfire / rough idle: most reported vehicles
Model years whose owners most often describe misfiring cylinders or rough idling in NHTSA complaints. Last verified Aug 7, 2026.
Counts are unique NHTSA complaints whose narrative matches this symptom’s keywords. Automatic classification is approximate, and raw totals favor vehicles that sold in large numbers.
All vehicles with misfire / rough idle reports
Every model year in our complaint database with matching reports — 265 in total. Search or filter to find yours.
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