My car is 4 months old and I've taken it in to the dealer twice to no avail.

When driving on the freeway with speeds ranging from 50-75, every now and then m speedometer will drop from my current speed down to either zero or 20 and then it will pop up just as quickly as it dropped.

This doesnt happen all the time, i might go a week without it happening.

Can someone help me on this so that i can share it with the dealership which I purchased it from?

:?: