The shorter Finnish plates (118 mm x 338 mm) can be typically spotted on these vehicles:
Alfa Romeo 156
Honda Prelude (certain older models)
Isuzu Trooper
Mazda 323 (Familia, Neo, Mio)
Mazda 929 (1981-86)
Mercedes jeeps (at least older models)
Mitsubishi Pajero
Nissan Vanette
Saab 9000 (some models)
Volkswagen Jetta (some models)
Volkswagen Passat (some models)
and besides these, almost all American vehicles..!

Maybe it would be reasonable to put here a list of American cars that do have enough plate space (for 118 mm x 397 mm plates), rather than list all the "normal" ones... but that kind of list maybe comes later.

Original version of this list contributed by Perttu Halkola.
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