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-   -   22.8 mpg (https://www.rx8club.com/rx-8-discussion-3/22-8-mpg-180687/)

YUL PHL 08-18-2009 01:30 PM

22.8 mpg
 
couldn't find the MPG thread so I figured I'd post my great mpg.

I was coming home from a weekend in Vermont.

I got 22.8 MGP with 95% highway

-just me in the car and a small suitcase in the trunk
-driving @ about 70-72 in 6th gear with a few peaks @ 78-80 mph
-new airfilter
-AC running on lowest setting (1), windows closed
-93 octane shell and exxon in the tank
-topped off my oil with 1/2 quart of Castrol GTX 5/20


I was pleasantly surprised by the number because my previous highway trips had me at about 20 mpg.

23 mpg is what i used to average in the city on my mazda3 2.3 hatch.

unfortunately, it's back to 17 mpg for my commute to work :(

04RX8man 08-18-2009 01:40 PM

Not bad....oh and btw weather the Ac is on 1 or high (fan speed) the compressor is still engaged cause a SMALL amount of power to drop your mpg numbers....so no difference weather the fan speed is low or high....compressor is engages...

but not bad numbers either way

Jedi54 08-18-2009 01:41 PM

not too shabby, grats on the good fuel mileage.
I think my high is somewhere in that range although these days I usually have a passenger for my long road trips and a full trunk so I only get 20-21 if I'm easy on the throttle.

04RX8man 08-18-2009 01:43 PM

24.4 was my highest....loaded to the max while moving to FL....

Grungepup 08-18-2009 01:44 PM

man.... my average city is 13-14

elysium19 08-18-2009 04:07 PM

It's not how full the car is, it's how fast you drive. I typically do 75mph on the highway, but in all seriousness I gain 4-5 mpg simply by driving under 60mph instead.

04RX8man 08-18-2009 04:38 PM

yeah^ I try to keep it under 3750 rpms but it's hard to .....comin back form Tennessee a couple weekends back I did 85-95 the whole way home and still got 20 so I was somewhat happy with that!

I8U 08-18-2009 04:45 PM

Just got 25.2, combined highway/city over this past weekend.

04RX8man 08-18-2009 04:56 PM

^what the How? Please teach a young grasshopper your tricks!!!!! haha

Krazed_Rx8 08-18-2009 05:01 PM

I get like 12mpg city driving =(

I8U 08-19-2009 06:24 AM


Originally Posted by 04RX8man (Post 3176862)
^what the How? Please teach a young grasshopper your tricks!!!!! haha

On my long all highway trips I can sometimes squeeze out 26+. My best best 27.1...
I don't think I do anything special, I guess I have just found the sweet spot where it leans it out just enough, ya know? On long trips I shift before 3500, and keep it under 3800 while cruising...that works to somewhere near 70mph. I premix most fill ups, and try not play around with speed too much while driving.

RX-8GT6spd 08-19-2009 09:33 AM

I drive 15 miles over the speed limit at all times and keep around 20-21 mpg highway... which isnt to bad.

Hidef1080 08-19-2009 09:37 AM

I never really looked but I'm guessing I'm around 21 on a good day. Maybe.
In mixed I'm around 18.
Clunker mileage!!! Woo Hoo!!!!!!!!!!!

CyberPitz 08-19-2009 09:40 AM

16-18 in city
24-28 highway

Numbers are Avg - max

NastyCherryShinka 08-19-2009 09:41 AM

Driving home from Ohio this past weekend I averaged 22mpg. Had just done an oil change with Castrol GTX 530. Was mostly highway but did see alot of sitting in traffic. AC was on full blast the whole time.

Around city im averaging 15. It was nice to finally see 22

Zerotide 08-19-2009 10:56 AM

I'm happy if I get 20 on the highway...


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