How to troubleshoot a BMW engine that won't start?

I am facing an issue with my BMW engine where it won't start. When I turn the key, I can hear the starter motor turning but the engine won't start. What could be the possible causes and how can I troubleshoot it?

Make sure the battery is charged, check the spark plugs, and inspect the fuel pump. These are the common reasons for engine not starting in BMW cars. If all of these are fine, it could be a more serious issue and you should take the car to a BMW mechanic for further diagnosis.

Try using a diagnostic tool to check for any error codes in the car's computer. This can help pinpoint the issue and save you time and money on unnecessary repairs. Also, check the ignition and fuel injection systems for any faults.

If you have recently replaced the battery, make sure it matches the specifications of your BMW. Using a lower or higher capacity battery can cause issues with starting the engine. Also, check the wiring and connections to ensure they are secure and not corroded.