2024 Audi P0300: What It Means & Is It Safe to Drive?
P0300 on the 2024 Audi: Random/Multiple Cylinder 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
The PCM has detected misfires across multiple cylinders. This can cause damage to the catalytic converter if driven for long.
Common causes on the 2024 Audi
- Worn spark plugs or ignition coils
- Clogged or bad fuel injectors
- Low compression
- Vacuum leak, bad MAF, or fuel delivery issue
Symptoms
- Check Engine Light (often flashing under load)
- Rough idle, shaking, loss of power
- Possible smell of unburned fuel
Typical fixes
- Replace spark plugs and coils as needed
- Clean or replace fuel injectors
- Fix vacuum/fuel issues
- Compression test if no obvious cause
Repair cost range
For a 2024 Audi, repairs for P0300 typically fall between $150 and $1200, depending on the root cause and labor rates in your area.
Known issues on Audi
Audi P0300 on EA113 2.0T FSI (2006–2008 A4, A6) is very commonly caused by carbon buildup on intake valves—the FSI direct-injection engine accumulates significant deposits; walnut blasting is the fix. On EA888 Gen 1 2.0T TFSI (2009–2012), timing chain stretch causes variable cam timing and intermittent P0300 on cold starts. On S4 3.0T supercharged, the HPFP cam follower wear reduces fuel pressure and causes lean misfires—inspect the follower through the HPFP port every 20k miles.
Most commonly affected models