2013 Mercedes-Benz P0306: What It Means & Is It Safe to Drive?
P0306 on the 2013 Mercedes-Benz: Cylinder 6 Misfire Detected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
Misfire on cylinder 6, found on V6 and V8 engines. On transversely-mounted V6 engines the rear bank cylinders (including cylinder 6) often have higher labor costs due to access difficulty.
Common causes on the 2013 Mercedes-Benz
- Worn spark plug on cylinder 6
- Failed coil-on-plug
- Fuel injector fault
- Low compression
Symptoms
- Check Engine Light, may flash under load
- Rough idle or vibration
- Hesitation and power loss
Typical fixes
- Replace spark plug and COP coil on cylinder 6
- Replace or clean injector on cylinder 6
- Compression and leak-down test if no improvement
Repair cost range
For a 2013 Mercedes-Benz, repairs for P0306 typically fall between $150 and $1200, depending on the root cause and labor rates in your area.
Known issues on Mercedes-Benz
Mercedes M272/M273 P0306 on the rear-most cylinder follows the same diagnosis as other cylinders on these engines. On M273 V8 S550 and GL450, P0306 is typically a failed coil—the M273 does not have the same balance shaft issues as the M272.
Most commonly affected models