i have had many vectras and never raced a single one
but once on a motorway in a 2.0 16v sri tourer x reg, i had a
cock in a 1.6 focus undertake me after going through roadworks.
i put my boot in and the focus sailed past undertaking.
i stared at the badge it said 1.6 and looked newish.
after that i just see anything less than a v6 as not very fast