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Ima disagree.
Weight is a marginal efficiency factor on long trips at steady speeds, it matters most when accelerating. Wind resistance is most critical, so a slippery hybrid is going to give better motorway MPG than a fat non-hybrid.
And the weight isn’t as different as you might think. As an example a Skoda Octavia PHEV weighs 1600kg which is about 150kg more than a petrol version (9% or so) and is less than a Tesla 3.
More complicated and expensive to run yes, that’s another reason I don’t want one.
Hefty-
I've always wondered about PHEV vs ICE engines -using a Skoda Octavia as an example, and their own site as source about MPG (big pinch of salt here), the diesel wins over the Hybrid model for mpg ( and CO2 emissions comparable).
So if you're doing long journeys, then the diesel is 'better', but if only short round-trips, the PHEV might be pip the diesel (if you've got access to a charger).
seager
But when they're in EV mode, the battery is too small and the ICE engine shortens the range, meaning more electricity is required per mile (that electricity is still partly generated by fossil fuels). When you're doing a long trip, the petrol engine has to work harder as it's carrying a heavy battery so pollutes more than a conventional ICE.
They're also more complicated than either a conventional ICE or an EV and so servicing is more expensive.
It's literally the worst of both worlds and a total con job.