Marky Dissod
Full Access Member
Although I don't know about specific testing behaviors, I know that most test behaviors were written into the test by 1978 based on older traffic patterns.I believe the drive cycle is much slower highway speeds than is normally driven these days and steady throttle inputs.
where most people drive 75 mph these days with constant throttle foot.
both basically keep a normal driver out of 4cyl mode while pushing a brick thru the air at 75mph.
oddly in most cars, I usually get a few mpg better on the hyway then the epa rating. especially manual cars. this truck, nope.
Although they added a few tests that add AC usage and faster top speeds in 2008,
It's a known fact that most people nearly always have a very hard time achieving the CAFE MpG test scores in the real world.
In and of itself, THAT FACT ALONE proves how unrealistic and optimistic CAFE MpG test scores are.