car turns over but wont start

Hello, You will need to scan for trouble codes, and diagnose those first, if any. You will likely find a trouble code referring to an EVAP leak, which will inform you that the purge valve is likely stuck open. It is mounted under the intake manifold. Another code you may find is for the crankshaft or camshaft position sensor, which will prevent the engien from firing the spark plugs because it does not recognize the appropriate time to fire each plug. Aside from that, ensure the fuel injector relay is operational, and that all fuses are good before sending it to a VW or European auto shop.