Prototypes

Factory prototypes, engineering and experimental vehicles.

In numbers

Cars
418
Makes (171)
Volkswagen (23), Lamborghini (13), Mercedes-Benz (13), Alfa Romeo (12)
+ 167 more makes · show all 171
Years covered
1889–2026
Rarest
AC MA-200 (1962) · 1 built
Most built
Toyota Prius Plug-in Hybrid demonstration fleet · 600 built
Coachbuilders (11)
Bertone (10), Pinin Farina (8), Zagato (4), Italdesign (3)
+ 7 more coachbuilders · show all 11
Individual cars documented
2 – listed on each car’s page

Production counts link to their sources on each car’s page.

“Built” shows the figure with the strongest evidence for what each entry counts – the whole model, or only the rare specification. Rarity labels are editorial; the exact numbers and their sources are on each page.