Real Range of an EV

  • Drivingforfun's Avatar
    I might be wrong if there is a new economy test procedure just for EVs, but I'm assuming the driving they are put through is the same as for ICE vehicles

    They recently (last 5 years or so) changed the route to involve more slow-speed driving, which is inefficient for combustion engines but actually lets EVs, which are at their worse at higher motorway speeds, shine out

    I always multiplied the official range by about 0.6 to 0.7 which seems about right looking at the article

    I have little experience but when I was given an electric Mini with an official 140 mile range I got approx 1 mile per 1% of battery so 100 miles ... at motorway speeds this was more like 80-90 miles

    I guess it's obvious really but EVs really don't like motorway speeds, which ICE cars - especially diesels - seem to prefer

    Maybe there's an argument for a properly done hybrid that isn't so hamfisted, runs on EV in the city where it's at its best, then switches to ICE on the motorway where no one is going to breathe in the nasty fumes
  • Rolebama's Avatar
    I have driven, and been a passenger in a few hybrids now, and am very impressed at their capabilities around town and the suburbs, but I have yet to see one very fuel efficient at motorway speeds, It seems they have relatively small batteries which kick-in for acceleration, but relatively underpowered ICE engines, so they are capable of motorway speeds and above, but at the expense of mpg, because of their weight.
  • Drivingforfun's Avatar
    Almost all of the people I know who chose a plug-in hybrid acquired it as a company car and chose it because of the emissions which were, officially, extremely low because of the way the mpg is measured and they are listed as getting 200-300mpg

    They achieve this because they do about 85% of the journey on electric but are allowed to consider that as total distance travelled for the purpose of calculating mpg - so if they did 100 miles and only 15 miles was done on petrol @ say 30mpg so half a gallon they'd be able to write that off as 100 miles which would be 200mpg

    In the real world I don't know anyone who does 85% on electric, more like 10%, the rest of the time they are sitting on the motorway doing the same mpg as a large SUV or sports car

    They were popular a few years ago though because you paid almost no benefit in kind tax due to the low emissions, I even met a few people who said they had no intention to ever plug them in, they just chose them because it was cheap - the more economical diesel model would cost more in BIK tax - enough to make the superior economy irrelevant - so the tax system actually encouraged people to choose the thirstier car

    I do think there is something in the hybrid idea if they were designed to be good cars for the public, not to pass tests