Poor highway mileage on '09 Vibe, 1.8L auto

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peter826
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Poor highway mileage on '09 Vibe, 1.8L auto

Post by peter826 » Thu Dec 04, 2008 12:39 am

Hi all,First time poster, long time reader -- love all the Vibe talk here. My new '09 Vibe has about 1500 miles on it. I'm getting great city mileage....27-28 mpg, with the 1.8L auto (base model).On the other hand, a recent highway trip saw mpg of 22 (BP 87), 22 (BP 87), and 24 (Texaco 89) between three tanks. The 24mpg tank was the higher octane, which may have made the difference. Typical highway speed is 70-75 mph, drive was in Illinois/Indiana, not many hills, outside temp in 30-40 degree range.Any ideas why I might be seeing such poor highway mileage, while getting good city mileage? I'm stumped!

michaelgt
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (peter826)

Post by michaelgt » Thu Dec 04, 2008 1:08 am

What were your RPMs? Is there a chance that you were not in overdrive?

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Silversn95
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (michaelgt)

Post by Silversn95 » Thu Dec 04, 2008 1:39 am

Quote, originally posted by michaelgt »What were your RPMs? Is there a chance that you were not in overdrive?+1, are you sure you had it in the proper gear? Only reason I ask is that the Vibe 4 speed has the same shifter gate set-up as my mom's Rav4. On one occasion my sister actually had it in 3rd instead of Drive but didn't notice at all until minutes later when she noticed the tach was indicating a much higher rpm than normal. There is only a lateral movement between 3 and D which in my mind is a mistake. A simple bump of the handle could knock you in 3.
2009 Pontiac Vibe - 1.8L 5-speed 1SB Carbon Gray Metallic with 20% tint

peter826
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (michaelgt)

Post by peter826 » Thu Dec 04, 2008 1:53 am

Good God...am I an idiot or what? Yes, the RPMS were high.The car has 3-D, 2, L. Is it possible I've been in 3rd this whole time? You bump the lever to the right to get into D instead of 3? I assumed it meant 3=D, and there's nothing in the owner's manual to suggest otherwise. Holy cow.

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ned23
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (peter826)

Post by ned23 » Thu Dec 04, 2008 2:01 am

Quote, originally posted by peter826 »Good God...am I an idiot or what? Yes, the RPMS were high.The car has 3-D, 2, L. Is it possible I've been in 3rd this whole time? You bump the lever to the right to get into D instead of 3? I assumed it meant 3=D, and there's nothing in the owner's manual to suggest otherwise. Holy cow.That will do it. It's happened to me in my old 1.8. i accidentally turned off OD and yep, the car got about 25mpg on the highway. Add that to the premium which usually caused my mileage to drop by about 2 and that would make the difference. Premium gas in the 1.8L made a little (even noticeable) difference in smoothness and power going up steep slopes through mountains but otherwise it was less fuel efficient.

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bull77
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (peter826)

Post by bull77 » Thu Dec 04, 2008 2:05 am

don't feel bad --- when i test drove the new matrix i noticed the rpms were at 4000+ on the hwy. I asked the sales guy wth was going on and said I thought they had improved the engine for the 09... btw welcome to genvibe!

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Wolfman213
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Post by Wolfman213 » Thu Dec 04, 2008 2:23 am

gratned, not the 09, an 06, but I was on a kick for a while that some how some way I was always hitting the O/D button and driving in 3rd instead of O/D. I bet if you polled the genvibers that 95%+ has done that at one time or another.
April 2010 Co-MOTM * Custom LED Gauge Cluster swap * LED dome, HVAC, and shifter * Retrofit projector w/ blue halo * Kenwood KDC-HD942U * Herculined cargo area * Debadged *Wolfman's Garage

5speed4
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Re: (Wolfman213)

Post by 5speed4 » Thu Dec 04, 2008 5:12 am

Don't feel bad. I've done this two or three times now, albeit for only a few minutes, with my manual tranny Vibe too. The 1.8L is very quiet and smooth, so it's easier to forget to shift up than in other 4-cyls I've owned.

peter826
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Re: (Wolfman213)

Post by peter826 » Thu Dec 04, 2008 9:22 pm

Quote, originally posted by Wolfman213 »gratned, not the 09, an 06, but I was on a kick for a while that some how some way I was always hitting the O/D button and driving in 3rd instead of O/D. I bet if you polled the genvibers that 95%+ has done that at one time or another.That's kind of funny, because I did two test drives and neither salesman noticed my error, either!Hey, thanks everyone! The bad highway mileage had made me second guess the car, which I otherwise love -- so it's all good now!Peter

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lencurrie
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Re: (peter826)

Post by lencurrie » Tue Jun 02, 2009 3:14 am

That's hilarious.. I did the exact same thing when I took one out for a test drive.. This is going to be my first automatic in a LONG time.. so it's nice to know I wasn't the only one .. I'll know when I get on the road though!!

headcold
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Post by headcold » Tue Jun 02, 2009 9:43 am

Just a quick overview. The Vibe has a 4 speed automatic, with overdrive (O/D, the little button on the shifter), providing a psuedo-5th gear for highway driving. You almost never want to turn O/D off or use 3rd gear for regular driving.Using 3, you restrict the car to only use 3rd gear, which would be desirable for hill climbing or when you are towing something.Same thing for turning overdrive off, you max out at 4th gear.The idea is that you might know, in certain situations, better than the tranny what your gear ratio needs are for a specific activity or stretch of road.If i'm off, someone please correct me.
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Caretaker
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Re: Poor highway mileage on '09 Vibe, 1.8L auto (bull77)

Post by Caretaker » Tue Jun 02, 2009 9:59 am

----don't feel bad --- when i test drove the new matrix i noticed the rpms were at 4000+ on the hwy.------My RPMs are always 4000 on the highway
Live it up: There will be plenty of time to be old when you die.
* '09 Vibe: 1.8 liter *
* '10 Hyundai Elantra Touring *
* '07 Honda Fit Sport *
On Deck: '22 Hyundai Tucson/'22 Subaru Crosstrek/'22 Corolla Cross

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Caretaker
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Re: (headcold)

Post by Caretaker » Tue Jun 02, 2009 10:00 am

--------Just a quick overview. The Vibe has a 4 speed automatic, with overdrive (O/D, the little button on the shifter), If i'm off, someone please correct me----------Yep, you are off. The Vibe 03-08 has the overdrive on/off button on the shifter, not the 2009 nor 2010 models.
Live it up: There will be plenty of time to be old when you die.
* '09 Vibe: 1.8 liter *
* '10 Hyundai Elantra Touring *
* '07 Honda Fit Sport *
On Deck: '22 Hyundai Tucson/'22 Subaru Crosstrek/'22 Corolla Cross

Old Tele man
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Post by Old Tele man » Wed Jun 03, 2009 10:49 am

...samething happened when my wife took the new 2009 Vibe on a trip and didn't notice that she'd been "clicking" the gear selector quantrant into "3rd" instead of "D" all the time....but the highway 25-27 mpg results SURE 'clued' me that something wasn't kosher in the pickle farm!
...and the Devil said: "...yes, but it's a DRY heat!"
• 2014 Prius 1.8L eCVT
• 2009 Vibe 1.8L 4A
• 2004 Vibe 1.8L 4A

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Mariachi
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Post by Mariachi » Thu Jun 04, 2009 3:28 am

welcome! the rpm's do play a big part on your gas mileage. everyone that posted above me is correct in every way.
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raz
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Re: mileage

Post by raz » Thu Jun 04, 2009 10:01 am

Brand new viber here -- good to know this as I'm sure I'd inadvertently try it sometime!I've been poking around the site to try to find general recommendations on optimizing gas mileage. Is there an existing thread or sticky somewhere I should look at?thanks!
2003 Fiesta Red

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Tubaryan12
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Re: mileage (raz)

Post by Tubaryan12 » Thu Jun 04, 2009 10:09 am

The overdrive button is great to use while passing as an instant down shift.Just make sure you push it again when you're done.
ex Vibe: 2005 Abyss 2 tone base, auto, power package (33.24 mpg combined)2008 Kia Rondo EX V6 7 passenger Volcanic Red w/ tan cloth interior (26.7 mpg combined) Finally got 30 mpg combined on the Rondo V-6 (10.24.09) Smith Driving

ClunkClunk
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Post by ClunkClunk » Fri Jun 05, 2009 8:51 am

A few months back, I got a call from my girl. She was driving her Vibe on the freeway, and was concerned something was wrong because it was revving too high. Turns out she had accidentally clicked the O/D button. It took me a few minutes to explain where that button is, and what it meant :-)But hey, I give her credit for knowing something was wrong, and contacting me before it became an issue.
2008 Frosty two tone (and 3 other Vibes)

kroot10105
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Re: mileage (Tubaryan12)

Post by kroot10105 » Fri Jun 05, 2009 9:51 am

I do not have tips but would like some for myself also. My 09 vibe 1.8 auto is not getting the kind mpg that my 04 does. My 09 has 7,000 mile and I can not break 29 mpg no mater how I drive or what gas I use. My 04 regularly gets 30 city 34 to 36 highway. I have noticed the 09 runs at 3000 RPMs at 70 mph but my 04 only runs at about 2800 RPMs at the same speed. Does any body have comperable No.s for their 09 vibes. Yes I have it in overdrive. The only way I can have the car checked for MPG problems at the dealer is to pay $110.00 up front and hope they find something or I am out the money.Also does anybody have info on the 09 trans. Has it been changed from 04?

Old Tele man
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Re: mileage (kroot10105)

Post by Old Tele man » Fri Jun 05, 2009 11:02 am

...my 'base' 2009 Vibe with 1.8L 4-speed automatic and original P205/55R16 Goodyear "Eagle" tires (840 rev/mile) has the following calculated MPH-vs-RPM values:35mph @ 1,453 rpm45mph @ 1,869 rpm55mph @ 2,284 rpm65mph @ 2,699 rpm75mph @ 3,114 rpm85mph @ 3,529 rpm...however, the tachometer isn't graduated with the resolution needed to actually "read" those numbers; but, I can say that at 35 mph in 4th gear, the tach does indicate approximately 1.45K rpm...and, likewise, at 75 mph in 4th, the tach is showing approximately 3.11K rpm....it looks like the tire-diameter and gear/axle ratios (0.700:1 in 4th and 4.237:1 axle) yield 24.08 mph per each 1K engine rpm....also, I just had the speedometer tested today, and it has a constant offset of 2 mph (typical of most GM products with computer driven analog gauges):10mph actual indicates 12mph20mph actual indicates 22mph30mph actual indicates 32mph40mph actual indicates 42mph50mph actual indicates 52mph60mph actual indicates 62mph70mph actual indicates 72mph80mph actual indicates 82mph...and the place that did these tests also certifies and tests the Arizona Highway Patrol speedometers. She said most new GM speedos have the same 2-3mph offset...(computer reads wheel revolutions, calculates the MPH, adds "2", and sends the MPH+2 signal to the speedometer gauge)...assumed to be for differences in tire diameters, air-pressure values and loads....according to the Pontiac literature, the 2004 and 2009 transmission and axle ratios are the same, only the tire/wheel diameters are different: 2004 = 15" and 2009 = 16" (or 17" or 18")
...and the Devil said: "...yes, but it's a DRY heat!"
• 2014 Prius 1.8L eCVT
• 2009 Vibe 1.8L 4A
• 2004 Vibe 1.8L 4A

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