No not at all if anything it would mean they are slightly bigger. I think that they look ok and thats what count. You'll never find exactly what you want in 1/56 and if you do it will cost a fair a bit imo. I use it as a guide some vehicles you can pick up look spot on but some don't.
Besides they aren't based like your figures are and this offsets it I think. Some scale purists will have a fit but it is all in the eye of the beholder.
This car is from the above range.


Not sure on this one but its from a similar range.

Russian Diecasts from De Agostini also 1/43




Not sure of the make of the VW van now.

Poundland Special

