AlanSubie4Life
Efficiency Obsessed Member
I think because of the adjustment factor most other manufacturers take (range * .7)
Again, Tesla does this as well. For Model 3, they used 0.7032. Except for 2021, where they are now using 0.747 or so. (This explains a lot of the jump to the 353 rated miles from 322 rated miles.).
So for 2020 Model 3, that really doesn't explain the discrepancy here. I still think the Porsche did notably worse than I would expect in the test Porsche conducted for the EPA. There were software updates after that so I do wonder how the Porsche would do now (I haven't been following this at all).
Anyway, mostly the relative performance at freeway and city/mixed highway speeds explains part of it as discussed earlier. But I'm not sure it explains all of it.
But it doesn't really matter. Seems like realizable range is around 220-250miles at 80mph (depending on exact equipment), probably a little better than a Model 3 (I would call it similar). That's all I was trying to figure out - kind of where the Taycan ended up real world. Plenty of threads from other forums posted here now to figure it out!