OK, so personal opinions about how 'useless' that Howmanyleft site is, it's clearly at the very least approximate, so I thought I'd have a look to see what level or rarity older (or newer?) Vauxhalls have, and I've found...
As a sort of Datum point let's look at the Carlton, a car we all remember them being a very common sight all over the roads, well there's apparently now just 515 left (924 SORN) that's including Lotus Carltons, but I've separated that figure down below, as they're not your regular Carlton, really
So... 'top ten' rarest Vauxhalls (ok, 12..ish)
Cresta 447 (175 SORN)
Velox 264 (45 SORN)
Chevette 221 (648 SORN)
Senator 163 (378 SORN)
Midi 140 (212 SORN)
Wyvern 92 (15 SORN)
Lotus Carlton 63 (113 SORN)
Firenza 63 (90 SORN)
Ventora 53 (20 SORN)
Viceroy 5 (16 SORN)
Royale 4 (47 SORN)
Albany 2 (3 SORN)
Might be possible to combine The Wyvern, Velox and Cresta models, as these shared the same bodyshells/same car, really - much like an Omega or Elite.. Astra and Belmont etc... In which case the total for these would be 803 (235 SORN) which surprisingly outnumbers the old Carlton by a fair bit.
In the same way we could combine the Senator, Carlton, Royale and Viceroy as the 'same' car (and therefore even Monza, too? = 59) that's then 746 cars.
ok, they're NOT the same car, no-one shoot me down listing their differences, but you follow my logic, hopefully
Happily there's over 700 Vivas, 1.5k Victors/Vx1800/VX2300s, 1.2k Calibras about and 1.8k little Novas grounding on speed humps as we speak. There's still 5.5k old faithful Cavaliers still driving about.
It might be limited appeal to many on here, but just got bored at work and got interested.
Oh, incidentally, we're now some 12 years out of production, and there's now 13 thousand Omegas still cruising about (from a high of 104,510 as the one-time best selling executive car in Britain).