all of @Bernd mods I have to say the Gavril Truck I used it once this week just to smash a camper trailer and a legran other then that never used it
I don't use some vehicles because i don't like them, but I usually forget the moonhawk. Most of people forget vehicles that released earlier and drive just new vehicles. Same thing is also with mods.
While I definitely see the argument for the K series on aesthetics, being a generic numbers-and-letters named European luxury coupe with overly safe styling (basically how the real ones are right now), it's on the lighter side for those vehicles and handles beautifully in its top trim RWD model with the ESC turned off. It's honestly one of my go-to cars if I'm testing out a medium or large sized race track. I really hope it gets some kind of official GT-like racing version at some point, just under 500 hp and under 3,000 lbs with a flared widebody and aggressive aero in a nice paint scheme. Would fit nicely in the current gap between the older/middle tier race cars and the unrestricted hill climbers. As for my pick, probably H-series. I prefer the D-series and Roamer for off-roading and the T-series when I want to play with larger vehicles. The ambulance is still a nice standout though. Outside of that, I don't go for the modern Pessima very often compared to the other FWD options in the game.
I can't think of a car which I don't use, yes even the pigeon, I use it some times. Everyone seems to don't like the Grand Marshall, but I really enjoy it... Same for the Miramar. I don't like the Legran, but with the RWD mod it's a very good fun car. Idk...
The GM, not much that really makes it special, if I want something boaty and powerful I go with the moonhawk, if I want something with the same engine and the pushbar I'll go with the D-seriesl and i'm not sure if the body can be separated from the frame.
I use quite a lot of them. I i go to the track with mostly all of them (even the t series) . Only ones i'd say i don't usually use are the van and the pigeon. Buuuut now that I've said that i just got some ideas for the h-series for possible screenshots and other stuff. The pigeon i rarely use though. I would only use it to try out some of @Taza's strange mods to it. I just don't like the instability of the car and even if it has the support wheels it still loses grip and it can't drive straight if it starts tipping. To the contrary of others opinions i actually like the grand marshal and the mirarmar. I don't know why but I like the look of the crown vic and the miramar is an cool looking old car with an rear end that likes to slide.
I only really use the grand marshal as a police car for police chases. Why does everyone hate the pigeon? I love when it just tips over.
I use all cars at times, but usually the Grand Marshal is least used car for me. It is quite hard to control(I play with controller). ------- I actually really like Miramar for biased crash tests and police chases, because it is so easy to deform. Wouldn't drive in one IRL
I can see how the modern pessima is forgettable I barely drive it and I find the old pessima more appealing and fun to drive.