perhaps some slight inaccuracies, but no biggie.
Form faults of course, but overall size, not aware of.

The Bburagos from the 1980s were made to fit their boxes, so they were everything from 1/16, 1/17, 1/18 to 1/20 and even 1/22 I think.

At times I see a car like the Tecnomodel Maserati 151, this appeared too small.
But then it was actually tiny and it is hard to find measurements of cars that were made in just a handful of handmade versions.