Why is my Audi A5 not starting?

I have a 2015 Audi A5 and it won't start. I just replaced the battery, but it still won't turn over. What could be the problem?

Has your car been sitting unused for a long period of time? If so, it's possible that you have a dead fuel pump or clogged fuel filter. Consider getting it checked out by a mechanic.

Check the spark plugs and ignition system. If they are worn or damaged, it could prevent your car from starting. It's a good idea to replace them every 30,000 miles or as recommended by your car's manual.

If your car is equipped with a smart key, make sure the battery is not dead. This can cause issues with starting the vehicle. Try replacing the battery or using the backup key.