I thought initiatives like WLTP were designed to harmonise test results across all manufacturers? Whilst it’s understood that real-world driving will mean WLTP figures are better than can be expected in reality, at least the playing field is level? Let’s be honest, no-one here has bought a car that says it does 65mpg and been surprised reality is closer to 45mpg, have they? And yes, I know there are worse examples but that quoted 65mpg is only achievable if you live on perfectly flat ground, where there’s no wind or rain, you don’t have a heavy right foot and can continually drive at 56mph everywhere.
There should a test for BEV’s, which take into battery temperatures with/without heatpump into acount during the colder seasons, that account for the plumet in range which can be as much as 40% or more depending on the model. However the article is about Tesla algorithm to make the cars sound as if they go further than they actual do, which as I understand WLTP takes into account as their base line. Similar to VW dieselgate!
I’ve had petrol and diesel cars for many decades and whilst there is a drop in MPG during the winter it’s usually around 10%, nothing like the sort of seasonal drops that you read about with EVs. That might mean that the summer range of around 600 miles in my petrol BMW might drop to around 550 in the winter.
I had the EV equivalent for a day recently and couldn’t believe that the range that the car showed when handed to me (with a full charge) dropped by 100 miles, from an already poor 270 miles, after I had driven just 40 miles. That wasn’t in the winter either!