Simply not true anymore when considering typical power station
efficiencies, transmission losses, battery charging losses, controller
losses and electric motor efficiency. Plus if you need to heat the
cabin, that uses electricity but with an ICE it makes use of 'free'
waste heat.
A diesel will easily equal it. 'Next generation' auto diesels are
targeting 40% efficiency. Very large marine diesels can already exceed
50% thermal efficiency.
You need to learn accounting.
Graham
Graham, it doen't matter about efficiencies in the short term.
Electrical energy can be improved in time to use cleaner sources
(possibly solar), current gasoline engines cannot.
I would much rather have a hydrogen fuel cell car, with a hydrogen
source from converted water using power from solar panels. You could
even store the hydrogen for days when solar energy is weak.
Luke