I like to see engines in models. Not only that but full suspension detail without things like exhausts etc moulded into the chassis. I like to build a miniature car that can be examined closely to see the detail rather than something that looks good on the top only.
It's a real bummer for me then that most of the cars I find interesting come as motorized kerbside kits!
I guess the one advantage of a kerbside is it takes much less time to build and the assembly is far simpler without having to worry about hinged parts or getting decent gaps on opening hoods etc. That said i still would rather have an engine
At the moment I'm kind of happy to do a few kerbsides to feel like I'm making some progress while I spend forever fabricating and detailing my Auster model