If you are having trouble starting your car, there could be several reasons. Here are a few things that you can check:

1. Battery - A weak or dead battery could be the reason why your car doesn't want to start. Check if your lights or radio turn on. If they don't, then your battery may be the problem.

2. Fuel - If you have an empty gas tank, your car will not start. Make sure that you have enough fuel.

3. Ignition System - Faulty spark plugs or a broken ignition coil could be preventing your car from starting. These parts need to be checked and replaced if necessary.

4. Starter Motor - The starter motor may not be working properly, and this can prevent the engine from starting. Check for any clicking noise or grinding sound while trying to start your car.

5. Alternator - A failed alternator can cause the battery to drain and prevent the car from starting.

If you have checked all of these things and your car still won't start, it may be best to take it to a mechanic to diagnose and solve the problem.