Just take a look at cars sold in europe.
2006 GTi
Aftermarket IC pipes, BOV, Audi A3 throttle pipe, APR stg2
29,000 miles
19mpg driving hard
26mpg normal driving(99% city driving)
93 octane
2008 rental toyota yaris
600 miles
stock
42mpg in mixed driving with ac blasting
87 octane
1999 Eclipse GS
Stock
86xxx
87 octane - 28city/34highway.
Car 1:
2006 mazda speed6, 2.3l d.i. 4cyl. turbo
13K
bone stock
16-17mpg (all city), 25mpg highway @~80mph, 27mpg @~70
93 octane
(self calculated numbers)
Car 2:
2004 mercury monterey mini-van, 4.3L(?) 6cyl
35K
bone stock
12-14mpg (all city), 22-24mpg highway trips
87 octane
(trip computer avg. reset regularly)
05 Honda S2000
Lightly modded (bolt ons)
16,000 miles
23 to 25 MPG mainly city driving
93 oct
Hey this might sound stupid, but does the GTO shut off 4 cylinders normal hwy driving? Like the dodge hemis do. If they don’t that’s a hell of a good rating.
Fuck you…
2003.5 BMW M3
as of this morn 60k
Intake, Header back catless, 4.10’s, SharkInjector, 245/275 setup
26.4 HWY (avg speed 85), 16.8 mixed, 11mpg driving hard…
93 Octane
1966 Impala SS
true mileage unknown
Uhm… the rear end is stock
7 mpg Hwy
100 from sunoco.
Nope, that’s on all 8. Buffalo to Boston and back. 6th gear all the way.
I FOUND PROBLEM!!!
also 245/275 setup… do you have your dropped? and feel as if the camber is off for the tires… or they are just rolling too fucking much 
not yet, I have KW V3 sitting here, I just don’t want to pay $1200 for an install…
07 Dodge Charger
22,000 miles
3.5L-stock
89 octane
mixed 20 mpg
17 city/25hwy
04 Dodge Viper
15,000 Miles
8.3L- Not Stock
93+ Oct.
9 City, 18 Highway
08 Jeep SRT-8
10,000 Miles
6.1L- Stock
91 Oct.
11 City, 15 Highway
great mpg :tup: lol. jk I wouldnt even expect that much from a modded 8.3 litre viper.
The 3.07 rear and “Tree-Hugger-Special” 6th gear that does 1200 RPM @ 65 MPH come in handy for something…
1984 Pontiac Trans Am
148500 miles
Stock
normal driving = 14-16 mpg
beating on it = 8-12 mpg
87 oct.
i love the tree hugger gear. it make smy life easy. so to eff them in the ass some more i turn the a/c on, on the thruway
1997 C5
Some mods
9 beating/17 average/25+ highway
1999 Jeep
Some mods
16 ave w/ mudding
1997 Bandit 600
Last tank was 48mpg
2008 Ford Escape
All stock
25 highway
19 City
20-21 when driving for work (70% city, 30%highway)