Hi, I have a 2012 Astra Elite 2.0 CDTI auto which I've had for a month.

When releasing the brake after holding at traffic lights or stop start traffic etc, the car jumps forward as if it is late in engaging drive again.

It seems to disengage drive slightly when held in D (I notice a slight change in revs and less pressure on the car to move forward), and when releasing the brake to pull away, there's a real jolt as it takes up drive, before I press on the accelerator. If I notice a slight