Trust GM to fudge the numbers and lie. BS is GM's most important product
230 MPG EPA Rating?
Folks are a bit confused by these mysterious ads. The giveaway is the
music, which reveals the spot to be part of the Volt campaign, but what
is 230? It would seem that 230 could well be the Volt?s EPA MPG rating,
a number which will be useful only to GM?s relentless hype campaign.
After all, no single portion of the EPA test cycle is longer than 11
miles, meaning EREVs get their own testing method (summarized after the
jump). But as Ad Age puts it, ?why run a teaser campaign for a car that
doesn?t go on sale until next year ? and one that?s been known about for
some time? After all, the marketer has been beating the drum for the car
for more than a year.? Because that?s the Volt Way. Meanwhile, 230 MPG?
Last we checked in with the Volt?s EPA MPG vision quest, GM was
basically negotiating with the EPA for a 100mpg plus rating. Last
September Bloomberg reported that,
obtaining a 100-mpg rating will require the EPA to develop a new
way of measuring fuel efficiency for a car that?s likely to rely more
heavily on electric than internal-combustion power, according to GM?s
Posawatz. The automaker promised to share mileage data captured from the
Volt?s onboard computers to verify real-world performance if EPA will
grant the certification now, he said.
GM-volt.com?s Lyle Dennis thinks he knows how the Volt will crack 230 MPG
Mike Duoba from Argonne National Lab devised a method to determine
the MPG of an EREV; first the car is driven from a full battery until it
reaches charge-sustaining mode, then one more cycle is driven. If we use
the highway schedule, the first 40 miles are electric. One more cycle is
11 more miles. If the Volt gets 50 MPG in charge sustaining mode, it
will use .22 gallons of gas for that 11 miles. Thus 51 miles/.22
gallons = 231.8 MPG.
What happened to 30 MPG in charge-sustaining mode? Is the 230 just a
reference to the charging voltage rather than some concocted MPG
equivalent? Expect more questions than answers at GM?s press conference
on the 230 phenomenon tomorrow.