I've got a new vectra elegance 1.8 saloon. its only a year and a half old but the suspension is scaring me now. in wet weather every time I go over speed bumps or waves in the road it makes a horrible creaking/grinding noise. with 4 people in the car its even worse. A Vauxhall mechanic took it on a test run with me sitting in it and said it was nothing major and that's the way Vauxhall's are built. I'm pretty sure this shouldn't be the case with a car not even 2 years old. Has anyone had these probs with a similar car, or can anyone advise on what to do? Suj