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Fuel Mileage


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Have you checked your plug gap?? mine was way off, also have you done your reso delete, and added psi ...

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Old 03-14-2013, 10:48 AM   #31
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Have you checked your plug gap?? mine was way off, also have you done your reso delete, and added psi to your tires?? I did all of these and went from 25-30 avg to over 40 now and I'm starting to creep up on 45 now..
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Old 09-04-2013, 10:38 PM   #32
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My best fuel mileage to date is 35.6 mpg; that was on premium fuel and 95% highway driving. My overall average during ownership is currently at 30.5 mpg.
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Old 02-06-2014, 03:33 PM   #33
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Default Poor gas mileage Cruze

i

My wife has a 2013 Cruze LTZ just got it new .It isn't getting anywhere near mileage reported in Canada City 36mpg(7.8 L/100km) Highway 54 mpg (5.2 L/100km)

I also noticed today while on the highway when going above 60 miles an hour that the tachometer reads at about 2300 this seems high to me for a 6 speed automatic. I own a 2010 Ford Taurus Limited with 6 speed automatic 3.5 v6 and it is usually around 1800 when over 60 miles per hour I can get 32 mpg on the highway with the v6 and I think that it weighs more then the cruze and is a bigger car.

What do most of other owners of Chevy Cruse who say they get 40 mpg or more on the highway what is your tachometer reading at 60 miles an hour? Maybe I need to take the car back to the dealer to have them check it out as I would think that is the reason for having a 6 speed automatic to have the motor work less in the 6 gear.
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Old 02-06-2014, 04:01 PM   #34
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Well, mathematically, an engine speed of 2300 RPM in 6th (0.74:1) gear for the 2013 6T40 Hydramatic transmission (final drive ratio 3.53:1) with Michelin Pilot MXM4 tires (802 rev/mile) yields a vehicle road speed of 66 MPH:

MPH = [ 60 / (G×A) ] × [ RPM / rpm ]

MPH = [ 60 / (3.53×0.74) ] × [ 2300 / 802 ] = 65.87 ~ 66 MPH.

...where:

MPH = Vehicle speed
..60 = Constant, minutes-per-hour
...G = Gear ratio, 6th = 0.74:1
...A = Axle (final drive) ratio, 3.53:1
RPM = Engine speed, revolutions-per-minute
rpm = Tire speed, revolutions-per-mile (Michelin Pilot MXM4 = 802)

Does that sound correct for your car?
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Old 02-06-2014, 07:56 PM   #35
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Hi
I think it sounds right I was driving it today at 60 miles per hour and it was around 2300 rpm. It is a 6 speed automatic I can't even get the city rated mileage on the highway with the car let alone what they say it should get on highway. I was watching a video on youtube of a guy with same turbo engine and 6 speed auto tran and at 65 miles per hour he is getting over 40 mpg and at 45 miles an hour he is getting like 58 miles to gal . Is that what most people get with the cruze or are most not getting any where near the mileage that is posted on the window sticker?
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Old 02-06-2014, 08:59 PM   #36
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Well, I can only respond about our 2011 LTZ, which has the 3.87:1 final (axle) drive ratio. The best we've EVER gotten has been 32.6-32.7 MPG at 65 mph, with no a/c operating, while city is only 27-29 MPG.

Seemingly, the 6M Cruzes seem to be able to meet & beat their EPA estimates...while very FEW automatics are able to do.
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