Friday, August 7, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

2021 Mercedes-Benz GLC 300 misfire / rough idle reports

5 NHTSA complaints describe misfiring cylinders or rough idling on the 2021 Mercedes-Benz GLC 300 — roughly 8% of all complaints for this model year.

5
Misfire / rough idle reports
8%
share of complaints
median reported mileage (all complaints)

Misfire / rough idle in other GLC 300 years

2020 GLC 3006
GLC 300 misfire / rough idle by year →

Other symptoms owners describe on the 2021 Mercedes-Benz GLC 300

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 Mercedes-Benz GLC 300 report before drawing conclusions.