What MPH gets the best MPG?

osbornsm · 06-21-2017, 04:50 PM

As 0 mph gives 0 mpg...
100 mph gives terrible mpg...

At what speed should cruise control be set to get the best mileage out of the Z?

I set cruise @ 80 this weekend and got 23.0 mpg over 300 miles.

Whacha got?

crazy4oldcars · 06-21-2017, 05:07 PM

Well, technically, the lowest rpm at the fastest speed...
Ok, I'll reword it, that looks funny.
6th gear has the lowest ratio, so, whatever rpm is just above where the motor lugs. Probably somewhere in the neighborhood or 45 mph.
That sucks, don't it?
Oh, you wanted to know about useful speeds!!?!
If you will set your cruise control about 65, and don't touch the gas or brakes, you would probably be amazed at the milage you would get, but where's the fun in that?
While I do track my milage, mainly because I'm ocd that way, I don't worry too much about the actual numbers, as long as they stay pretty consistent. A number uot of the normal range could indicate a problem that needs attention.
Oh, and I got over 26 on my 300 mile maiden voyage back from San Antonio. :driving

Kirk B.

B&W_Evader · 06-21-2017, 05:27 PM

Probably 1800-2000 rpm in top gear. I'd bet it's right at 55mph.

wanker · 06-21-2017, 05:30 PM

Traditionally, the best mileage is always around 45 mph.

RumbleFish · 06-21-2017, 06:02 PM

Can't say I've ever considered or thought about getting the best mileage in the Z.

SouthArk370Z · 06-21-2017, 06:21 PM

You should be able to get close with the fuel usage gauge. May need to use your foot to keep throttle steady while taking readings.

It will vary with temp, humidity, road surface, etc. It probably won't be the same for a stock setup and one with mods.

FWIW, on the rolling hills of S AR, I can get over 2 MPG better than cruise using my foot.

Raeshlavik · 06-21-2017, 11:33 PM

I have a several mile long spot on my drive to/from work over a dam; and that's straight, flat, unused, and 45mph. The Z will show like 28mpg average over that distance if I stay at 45mph, which is the best I ever see out of it.

Otherwise, yeah, putting MPG meters and estimators in the Z had to be someone's idea of funny.

cooltoy · 06-21-2017, 11:36 PM

Quote:

Originally Posted by RumbleFish

Can't say I've ever considered or thought about getting the best mileage in the Z.

ChaseZ · 06-21-2017, 11:51 PM

Cruising a nice steady 165 in 6th

370zHawaii · 06-22-2017, 12:53 AM

City I get a little over 300 miles per tank, highway I get a little over 400 per tank, I drive aggressive mind you... city or highway, but when cruising highway I try to keep it at 80 mph. Lately I have been finding myself going over 80 though...I am seriously considering a radar detector...not so much concerned about gas mileage as I am with speeding tickets..the Z just makes me want to drive fast as I believe it was meant to be

MCDX · 06-22-2017, 05:23 AM

Quote:

Originally Posted by osbornsm

As 0 mph gives 0 mpg...

ehm... no... unless you shut your engine off.

With the Z's aerodynamics I'd say the optimum is a bit higher than in regular cars. I'd say 55-60 mph. But that's just my feeling after a few longer trips. Never actually compared the numbers.

osbornsm · 06-22-2017, 09:21 AM

Quote:

Originally Posted by MCDX

ehm... no... unless you shut your engine off.

Erm, what?

Care to check that math again?

Using fuel (car running) while not moving, will eventually empty your tank. Giving Zero miles for your gallons.

osbornsm · 06-22-2017, 09:23 AM

Quote:

Originally Posted by RumbleFish

Can't say I've ever considered or thought about getting the best mileage in the Z.

You've never messed with the MPG gauge before?

You've never noticed the MPG gauge doesn't hit every 0.1
- It sorta skips by 0.3's

Oh, and I get 6.7 mpg at the race track

Don't get all serious on me

mults · 06-22-2017, 09:49 AM

Over the 18000 or so miles I've driven the Z, my overall average is 24.505 MPG. I've had a high of 28.8 on the way home from ZdayZ this year while averaging 60 MPH...on the track about 10

mishuko · 06-22-2017, 10:07 AM

Buys sport car. Wants to maximize mileage? Uh I swore the goal was highest fuel consumption. Damn

06-21-2017, 04:50 PM	#1 (permalink)
osbornsm A True Z Fanatic Join Date: Jun 2011 Location: WHAT Posts: 2,551 Drives: 2018 Camaro SS 1LE Rep Power: 424	What MPH gets the best MPG? As 0 mph gives 0 mpg... 100 mph gives terrible mpg... At what speed should cruise control be set to get the best mileage out of the Z? I set cruise @ 80 this weekend and got 23.0 mpg over 300 miles. Whacha got? __________________ 2018 Camaro SS 1LE (455hp) - 2011 Nissan 370z (333hp) - 2004 VW R32 (240hp) - 2000 Civic Si (160hp)

06-21-2017, 05:27 PM	#3 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 387	Probably 1800-2000 rpm in top gear. I'd bet it's right at 55mph. __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\|

06-21-2017, 06:02 PM	#5 (permalink)
RumbleFish Premium Member Join Date: Oct 2013 Location: Los Feliz, Ca. Posts: 1,212 Drives: '10-Sport-M6 Rep Power: 8240	Can't say I've ever considered or thought about getting the best mileage in the Z. SouthArk370Z, gomer_110, danegrey and 5 others like this. __________________ How far, this...Utopia? F.I. CBE V2/Stillen G3 CAI/GTM 25R OC/EcuTek tune (Specialty Z)/ KW V3's/Stillen Sway bars/SPC rear camber kit/Z1 FUCA/Mich. PSS4S 255/35-295/30

06-21-2017, 06:21 PM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	You should be able to get close with the fuel usage gauge. May need to use your foot to keep throttle steady while taking readings. It will vary with temp, humidity, road surface, etc. It probably won't be the same for a stock setup and one with mods. FWIW, on the rolling hills of S AR, I can get over 2 MPG better than cruise using my foot. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

06-21-2017, 11:51 PM	#9 (permalink)
ChaseZ A True Z Fanatic Join Date: May 2016 Location: Calgary Posts: 3,799 Drives: 16 370z Rep Power: 94683	Cruising a nice steady 165 in 6th birdman71 likes this.

06-21-2017, 05:07 PM	#2 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	Well, technically, the lowest rpm at the fastest speed... Ok, I'll reword it, that looks funny. 6th gear has the lowest ratio, so, whatever rpm is just above where the motor lugs. Probably somewhere in the neighborhood or 45 mph. That sucks, don't it? Oh, you wanted to know about useful speeds!!?! If you will set your cruise control about 65, and don't touch the gas or brakes, you would probably be amazed at the milage you would get, but where's the fun in that? While I do track my milage, mainly because I'm ocd that way, I don't worry too much about the actual numbers, as long as they stay pretty consistent. A number uot of the normal range could indicate a problem that needs attention. Oh, and I got over 26 on my 300 mile maiden voyage back from San Antonio. :driving Kirk B.

06-21-2017, 05:30 PM	#4 (permalink)
wanker Enthusiast Member Join Date: Apr 2014 Location: San Diego Posts: 443 Drives: 2011 370Z S/T A7 Rep Power: 2901	Traditionally, the best mileage is always around 45 mph.

06-21-2017, 11:33 PM	#7 (permalink)
Raeshlavik Base Member Join Date: Jan 2017 Location: Colorado Posts: 132 Drives: 18 Murano Midnight Rep Power: 8	I have a several mile long spot on my drive to/from work over a dam; and that's straight, flat, unused, and 45mph. The Z will show like 28mpg average over that distance if I stay at 45mph, which is the best I ever see out of it. Otherwise, yeah, putting MPG meters and estimators in the Z had to be someone's idea of funny.

06-22-2017, 12:53 AM	#10 (permalink)
370zHawaii Enthusiast Member Join Date: Oct 2010 Location: Sun Shining State Posts: 294 Drives: A Starship Rep Power: 15	City I get a little over 300 miles per tank, highway I get a little over 400 per tank, I drive aggressive mind you... city or highway, but when cruising highway I try to keep it at 80 mph. Lately I have been finding myself going over 80 though...I am seriously considering a radar detector...not so much concerned about gas mileage as I am with speeding tickets..the Z just makes me want to drive fast as I believe it was meant to be

06-22-2017, 09:49 AM	#14 (permalink)
mults A True Z Fanatic Join Date: Aug 2011 Location: Cleveland, OH Age: 69 Posts: 1,830 Drives: 2010 (40th) #706 Rep Power: 16886	Over the 18000 or so miles I've driven the Z, my overall average is 24.505 MPG. I've had a high of 28.8 on the way home from ZdayZ this year while averaging 60 MPH...on the track about 10 osbornsm likes this. __________________ mults 40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune) Build Date/Number: 1/27/2010 #706 Berk HFC + CBE, R2C CAI, Clear Bra, Cleveland Z Club Last edited by mults; 06-22-2017 at 10:11 AM.

06-22-2017, 10:07 AM	#15 (permalink)
mishuko A True Z Fanatic Join Date: Jul 2014 Location: bouncin on tigga Posts: 8,062 Drives: '12 Z Rep Power: 9435	Buys sport car. Wants to maximize mileage? Uh I swore the goal was highest fuel consumption. Damn RumbleFish and ChaseZ like this.