Diagnostic trouble code P0306 on your 2022 Mercedes-Benz E-Class indicates misfires in cylinder 6. The 2022 E-Class offers inline-6 and V8 engine options with six or more cylinders, making P0306 a valid code requiring Mercedes-specific diagnosis.
2022 E-Class Engine Configuration
The 2022 Mercedes-Benz E-Class features the M256 3.0-liter turbocharged inline-6 in E450 models and the M177 4.0-liter twin-turbo V8 in E63 AMG variants. Both engines can trigger P0306, with cylinder 6 at different positions depending on engine type.
Engine-Specific Diagnostics
On the inline-6, cylinder 6 is at the rear closest to the firewall with 48V mild hybrid integration. On the V8, cylinder 6 is on the passenger bank with twin-turbo complexity. Mercedes STAR diagnostics provide detailed engine-specific analysis.
Common Causes
Ignition coil degradation, spark plug wear, carbon buildup on intake valves, and fuel injector problems are typical across both engines. The V8 adds turbo system considerations.