Friday, August 7, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

2021 Chevrolet Suburban misfire / rough idle reports

12 NHTSA complaints describe misfiring cylinders or rough idling on the 2021 Chevrolet Suburban — roughly 7% of all complaints for this model year.

12
Misfire / rough idle reports
7%
share of complaints
68,500 mi
median reported mileage (all complaints)

Misfire / rough idle in other Suburban years

2023 Suburban5
Suburban misfire / rough idle by year →

Symptom counts come from keyword analysis of complaint narratives. One complaint can describe several symptoms, and classification is approximate — read the underlying reports on the full 2021 Chevrolet Suburban report before drawing conclusions.