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Old 07-11-2016, 04:12 PM   #4 (permalink)
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Join Date: Mar 2014
Location: SUNNY Sequim, Wa
Posts: 238

Cavalier of D00M - '05 Pontiac GTO LS2 T56
90 day: 23.2 mpg (US)

The New One - '10 Toyota Prius II
90 day: 51.55 mpg (US)

Chick Magnet - '91 Geo Metro 3cyl/5sp
90 day: 48.07 mpg (US)
Thanks: 79
Thanked 40 Times in 34 Posts
not always the case

my GTO gets solidly better fuel economy @70-75mph than at 60
as did my Camaro

but both cars were torque monster V8's with Double OverDrive 6 speeds and tall final gear ratios

when my GTO was stock
I routinely got 31-32mpg (with an avg speed of 70mph over a 400 mile drive)
but in order to get that, I had to keep the speed up the whole drive (coming down to 55 and back up, or taking exits, and getting back up to highway speed brought it down quick)
2005 GTO 6.0 V8 (600hp)

1991 Geo Metro 1.0 3/5 base

2010 Prius II (replaced 2001 Tahoe 5.3 V8 April 2014)

1994 F-350 7.3 TurboDiesel (Rollin' Coal)
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