I believe ribit's comment was about hybrid vehicles, not EVs.
I don’t know if they are much. better, a smaller battery but two drive systems.
Randomly picking a Hyundai Sonata because it has gas and hybrid versions:
The hybrid is about 3500 pounds
http://www.hyundaiusa.com/us/en/vehicles/sonata-hybrid/compare-specs
But the gas version is about 3200 pounds, about 10% less.
http://www.hyundaiusa.com/us/en/vehicles/sonata/compare-specs
nacl