p0300
Moderate
Mercedes-Benz · SUVs
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your Mercedes-Benz SUVs means: Random/Multiple Cylinder Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
X243X247X254V167X167AMG GLB35 4MATIC 2024AMG GLC43 4MATIC 2024AMG GLC63 S 2024AMG GLE53 4MATIC+ 2024AMG GLE63 S 2024AMG GLS63 2024EQB 250+ 2024EQB 300 4MATIC 2024EQB 350 4MATIC 2024GLB250 2024GLB250 4MATIC 2024GLC300 2024GLC300 4MATIC 2024GLE350 4MATIC 2024GLE450 4MATIC 2024GLS450 4MATIC 2024GLS580 4MATIC 2024Maybach GLS600 2024
Likely Causes
How to Fix It
1
Review misfire counter data on a scan tool to identify affected cylinders
2
Remove and inspect spark plugs for wear, fouling, or incorrect gap
3
Swap ignition coils between cylinders and recheck misfire counters
4
Perform a compression test to rule out internal engine problems
5
Check timing chain tension and alignment marks
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Spark plugs
Ignition coil packs
Timing chain kit
Fuel injectors
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