A P0303 code in your 2024 Mercedes-Benz GLC indicates the engine control module has detected persistent misfires at cylinder 3. The current X254 generation GLC uses the M254 2.0L turbocharged four-cylinder with mild-hybrid technology (255 horsepower). Understanding this advanced powertrain ensures accurate diagnosis.
Cylinder 3 in the M254 Engine
The M254 is an inline four-cylinder engine with cylinder 3 positioned third from the front. This engine includes an integrated starter-generator for 48-volt mild-hybrid functionality.
Second-Generation GLC
The 2024 GLC continues the second-generation platform with refined powertrains. The M254 engine provides excellent balance of performance and efficiency.
New Vehicle Misfire Scenarios
Even brand-new Mercedes-Benz vehicles experience P0303 codes from manufacturing defects, fuel quality issues, or software calibration sensitivity.
Luxury Compact SUV Standards
The GLC defines the luxury compact SUV segment. Any misfire affects the refined driving experience expected from Mercedes-Benz.