My first car was a Twingo 1, it was around 800kg, I traversed France highways from south to north mutiple times, never had any problem, very comfortable. It was even better than Lada 4x4 on snow (traversed plateau du Larzac fully covered in snow, no problem, without chains or winter tyres, saw some (french) Lada on the road side). Perfect car, but maybe you need to be French or Italian to appreciate it.