When I park and engage the parking brake, my car will usually roll a bit backwards then stop
This is even with pressing the parking brake in very firmly

Is this normal or does the parking brake need adjustment?

 

When I put on my parking brake, the car rolls back for no more than like 3 inches but no more. If your G is rolling back more than that, I think you should have it looked at by your dealer.

 

I recently had my dealer replace the parking brake switch on my car (the brake itself was also adjusted). My car rolled beyond what I considered reasonable and the brake light would flicker b/c the switch was faulty and would engage when the brake was off.

Once the dealer completed the work all is well

 

Did that fall under warranty?

 

Sometimes, I forget to release the hand brake and the car moves with parking brake on... is this normal?

 

It depends on how far and how much you mashed on the gas. I mean even with the parking brake on and you mash the gas, the car is still going to go forward at a very slow speed but if your going and the car just goes with it on, that sounds fishy.

 

yeah, the p[arking brake sucks ***. there was a DIY on how to tighten it yourself.