Hello guys,
after posting a lot of comments in the database, I was told to post my suggestions here. Many German WW2 military vehicles are not listed correctly, and sometimes one model is listed with different names, designations etc.

The main problem are the "Sd.Kfz." numbers. This short term means "Special Vehicle", and every tank, half-track or any other special military vehicle used by the Wehrmacht had one assigned number.
However, these numbers were internal army designations, and for most tanks for example, they are not important.
But when it comes to the many similar-looking, but still different halftracks and armoured cars, these numbers should be put as extra info, since the model designation (e.g. "leichter Panzerspähwagen") is used on different models.

So, here's my first suggestion:

The Sd.Kfz.251 was built on a chassis developed by the Hanomag company. Many different companies built different bodystyles, but the technical aspects are still Hanomag - but many of them are listed as "Weserhütte", for unknown reasons.

Changing the names is rather complicated, so it has to be done in several steps:

1) All of the following vehicles have to be renamed to:

Hanomag H kl 6p

http://imcdb.org/vehicles.php?resultsStyle=asImages&yearFrom=&yearTo=&makeMatch=- 2&make=&modelMatch=1&model=Sd.Kfz.251&modelInclModel=on&modelInclChassis=on&mk=&origin=- &madein=&madefor=&role=

2) Now, the extra info and year should be modified according to the different versions:

Year: 1943
Extra info: mittlerer Schützenpanzerwagen Sd.Kfz.251/1 Ausf.D
http://imcdb.org/vehicle_480718-Hanomag-SdKfz251.html
http://imcdb.org/vehicle_514414-Hanomag-SdKfz251.html
http://imcdb.org/vehicle_474943-Hanomag-SdKfz251-Ausf-D.html
http://imcdb.org/vehicle_326801-Weserhutte-SdKfz251-1943.html
http://imcdb.org/vehicle_130866-Weserhutte-SdKfz251-AusfD-1943.html
http://imcdb.org/vehicle_207944-Weserhutte-SdKfz251-AusfD-1943.html
http://imcdb.org/vehicle_215723-Weserhutte-SdKfz251-1-AusfD.html
http://imcdb.org/vehicle_478530-Weserhutte-SdKfz251-1-AusfD.html
http://imcdb.org/vehicle_515737-Weserhutte-SdKfz251-1-AusfD.html
http://imcdb.org/vehicle_158578-Weserhutte-SdKfz251-1-AusfD-1944.html (1944 year)

Year: 1943
Extra info: mittlerer Funkpanzerwagen Sd.Kfz.251/3
http://imcdb.org/vehicle_527162-Hanomag-SdKfz251.html
http://imcdb.org/vehicle_549251-Hanomag-SdKfz251-3.html
http://imcdb.org/vehicle_214427-Weserhutte-SdKfz251.html
http://imcdb.org/vehicle_441173-Weserhutte-SdKfz251.html

Year: 1943
Extra info: mittlerer Flammpanzerwagen Sd.Kfz.251/16 Ausf.D
http://imcdb.org/vehicle_436593-Hanomag-SdKfz251-Ausf-D.html

Year: 1940
Extra info: mittlerer Schützenpanzerwagen Sd.Kfz.251/1 Ausf.B
http://imcdb.org/vehicle_466325-Hanomag-Sdkfz251-AusfB.html
http://imcdb.org/vehicle_285293-Hanomag-Sdkfz251-AusfB.html
http://imcdb.org/vehicle_480720-Weserhutte-SdKfz251-1-AusfB.html

Year: 1941
Extra info: mittlerer Schützenpanzerwagen Sd.Kfz.251 Ausf.C
http://imcdb.org/vehicle_30653-Hanomag-SdKfz251-AusfC.html
http://imcdb.org/vehicle_766813-Hanomag-SdKfz251-AusfC.html
http://imcdb.org/vehicle_369116-Weserhutte-SdKfz251.html
http://imcdb.org/vehicle_432155-Weserhutte-SdKfz251.html

Year: 1941
Extra info: mittlerer Schützenpanzerwagen (Granatwerfer) Sd.Kfz.251/2
http://imcdb.org/vehicle_480798-Hanomag-SdKfz251-2.html

Year: 1941
Extra info: mittlerer Schützenpanzerwagen (Wurfrahmen 40) Sd.Kfz.251/1 Ausf.C
http://imcdb.org/vehicle_480722-Hanomag-SdKfz251-2-AusfC.html

Year: 1941
Extra info: mittlerer Pionierpanzerwagen Sd.Kfz.251/7
http://imcdb.org/vehicle_549254-Hanomag-SdKfz251-7.html
http://imcdb.org/vehicle_189147-Weserhutte-SdKfz251-7.html
http://imcdb.org/vehicle_263563-Weserhutte-SdKfz251-7.html
http://imcdb.org/vehicle_343826-Weserhutte-SdKfz251-7.html

Year: 1941
Extra info: mittlerer Krankenpanzerwagen Sd.Kfz.251/8
http://imcdb.org/vehicle_406419-Hanomag-Sdkfz251-8.html

Year: 1942
Extra info: mittlerer Schützenpanzerwagen (7,5 cm) Sd.Kfz.251/9
http://imcdb.org/vehicle_549256-Hanomag-SdKfz251-9C.html

Year: 1941
Extra info: mittlerer Kommandopanzerwagen Sd.Kfz.251/6 Ausf.B
http://imcdb.org/vehicle_135440-Weserhutte-SdKfz251-6-AusfB-1939.html

All other models should just be listed as "mittlerer Schützenpanzerwagen Sd.Kfz.251", maybe even without a year, unless the exact version is identified.