I was wrong about the manufacturer just picking a correction factor out of the blue. Tesla just runs all 5 test cycles, where most everyone else is running 2 and using the assigned correction factor. We'll in that case I think Tesla is fine, but I wish everyone else would run the 5 cycles so we can have apples to apples. There are other things allowed that can sort of cheat, and sometimes makers do get caught trying to put together a ringer car for the test. Hyundai for one. And of course VW had a whole program in the computer that triggered a special program when running the test.
But by doing what Tesla does they are more likely to piss off customers because the real world is nothing like the laboratory. Maybe Phoenix and San Diego customers are happy and everyone else is disappointed.
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