What kind of performance are you talking about? Would you please be a little more specific?

Normally tools such as NS-2, NS-3, OMNET++, NCTUNS, and so forth are frequently used.

common VANET performance metrics including end-to-end delays

As Rashed Hussain wrote, you can find different simulators to analyze the performance of a VANET. 

You can use ns-2 simulator and AWK/Python files or ns-3

If you follow the link, you will find some ns-2 VANET  simulations and the AWK file to evaluate the PDR, end-to-end delay, normalized routing load, and routing path length