I know Autocar etc make their own 0-60 figures. Sometimes turn out slower than the brochure claims, sometimes (well, often the case with Luton, who always undersold their cars, almost as a matter of course) turned out to be quicker.
Seem to recall motoring press laughing at the Vx-claimed Carlton GSi 0-60 time of 8 seconds, or thereabouts. As the Astra GTE, several hundred kgs lighter would do it in almost that same time. Only for the fat old tubby Carlton to manage it in 6.6secs! (this is from memory, may be talking out my exhaust - it was 20+ years ago, and I was under 10, so y'know
)
So would be a joy to hear what the true 0-60 time of the Omegas is. Aware that diffs make a fair old difference. Anyone got an old Autocar with the real-world 0-60 times for a V6??