How to troubleshoot engine problems in a BWM?

I'm experiencing engine issues with my BWM and I'm not quite sure what the problem is. Can someone give me some troubleshooting tips and advice?

First, check for any warning lights on your dashboard. If there are any, refer to your BWM's manual to decipher the code. If not, then start by checking your spark plugs, fuel filter, and air filter. These are common culprits for engine issues.

Another possible cause could be a malfunctioning oxygen sensor. This can affect the performance of your engine and lead to various problems. Have a mechanic check and replace it if necessary.