Insurance more on a 2.0 vectra than a valver??

[Sami]

Looking at getting rid of the valver and getting something bigger and boring eg a vectra, was looking at a 2.0 litre 16v gls, lot slower than the valver, was quoted £600 more??? Its a lower insurance group etc but Im getting quoted a lot more than for the valver, whats going on?

 

[cat171]

My dad used to have a cavalier cdx years ago, that was group 15. A valver is only group 12.