Seems like they are indeed heavier, on average based on articles like this.
Another unintended consequence of EV's the the overall increase in vehicle size that is occurring. Maybe not as big an issue in North America but it is raising eyebrows in Europe. Small vehicles compose a large portion of the vehicle fleet in Europe. For economic reasons and also practical reasons EV manufacturers are not making many of these small vehicles, most tend to be larger. It could add up to increased congestion, parking issues etc. as larger vehicles begin to make up a larger portion of the fleet.
https://www.brusselstimes.com/belgiu...-roads-faster/