God forbid they just lay out an on road real world test track like NHTSA uses to for calculating tire tread wear and gather an actual sample size with multiple test subjects like real scientists do.
Even mythbusters was able to figure out 2 new identical vehicles don't get identical fuel economy even when driven together on the same road at the same time.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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