This is what happened with a Kei Truck I made in Automation using one of the new official Mini Truck bodies, where the stats gave either a NaN value or some other very weird values in the specs. It appears to happen with almost all micro/kei body cars (spanning both modded and official models) with modded bodies often causing a crash before I can reach the end of the build.
These were taken from the UE 4.21 version found in the Steam Store, and provided both pictures of the one of the I was able to export and a copy of my exported .car data to let you guys check this model out and see if this is a legitimate bug or just some corrupt data on my end.
Kei Truck - Bugged Stats.car (30.0 KB)
Steam Username: Pikachu [ 11 ]