How to troubleshoot a faulty engine on an Audi A3?

My Audi A3's engine seems to be acting up lately. It's making strange noises and sometimes doesn't start. What could be the issue and how do I fix it?

First, check your spark plugs and make sure they are clean and functional. If they are dirty, replace them. Next, check your ignition coils and fuel injectors for any issues. If everything looks good, it may be a problem with your engine's sensors. Take your car to a trusted mechanic for further diagnosis and repairs.

It's possible that your engine is overheating. Check your coolant levels and make sure they are at the appropriate level. If your coolant levels are consistently low, there could be a leak in your system. It's important to address this issue as soon as possible to prevent any further damage to your engine.

One thing to consider is your oil levels. Low oil levels can cause engine problems and even lead to engine failure. Check your oil levels and top up if necessary. If your oil levels are consistently low, there may be a leak or your engine could be burning oil. Again, it's best to take your car to a mechanic for further inspection.