Are there any recurring engine-related complaints for the Mercedes-Benz GLC-Class from model years 2019 through 2026?
Yes. NHTSA complaint data aggregated by VinSpectorAI shows that engine problems are the most frequently reported issue category for the GLC-Class across model years 2017-2026, which includes the requested 2019-2026 span. The 2025 model year has the highest number of complaints among the analyzed years, with 34 complaints. Specific engine symptoms, failure modes, and consequences are not described in the supplied research, so buyers should treat engine issues as the dominant complaint area but without confirmed mechanical details. No repair cost estimate is available from the evidence.