A list of makes:
Austria
ÖAF

Belarus
MAZ (МАЗ)

Europe
Ford EU

Germany
Glas (? - ?)
Mercedes-Benz
Porsche
Krupp (? - ?)
Volkswagen

Hungary
ÖAF

Italy
ARIS
Autobianchi (1955-1995)
Ferrari

Japan
Autozam
Hino Trucks
Nissan
Toyota

Latvia
RAF (РАФ) (1949–1998)

Russia
VAZ (BАЗ)
GAZ (ГАЗ)
ZiL (ЗиЛ)

Sweden
Scania
Volvo

Taiwan
Luxgen

UK
Bedford (1930-1986)
Rotinoff (1952-1959)

Ukraine
ZAZ (ЗАЗ)

USA
Duesenberg (1913–1937)
Ford
GM
Mack
Mercury (1939–2011)
Pontiac (1926–2010)

USSR
MAZ (МАЗ)
VAZ (BАЗ)
GAZ (ГАЗ)
RAF (РАФ) (1949–1998)
ZAZ (ЗАЗ)
ZiL (ЗиЛ)

Okay! i just wanted to know that the topics that i'm currently adding are not violating the rules of the forum.

I do not know if it is useful or not, as you said the forum is not used a lot...
and info put here is not so easy to find back, a Wikipedia-like site would be easier for reference, but it is much more work.

Unfortunately! members are focusing only on the website while the forum is very deserted... currently i'm trying to revive it by copying informative pictures of vehicles with their years (Mistakes can be found on them) from autowp updates, do you think it's a good idea?

well it was never followed...

Great idea!

To keep this section organized, I think that it would be best to have one thread (topic) for each make, and then organize info inside each topic in the way that suits the best for the make.