My car won't start but the battery works?

So, you are saying the engine turns over but will not start? it takes 3 things for an engine to run. Fuel, Air, & Spark. You must determine which one of these you are missing. More than likely not air. So that leaves fuel & spark. Is the fuel pump running as soon as you turn on the ignition without starting the engine? It should run for a few seconds then shut down. If not, suspect the fuel pump fuse, relay, or the pump itself. Have you replaced the fuel filter in the last 36,000 miles? If not it may be clogged. Do you have fire at the spark plugs. It is a matter of elimination.

The battery is working, it is ok, you should check the starter and ignition.