Last post on May 28, 2013 at 6:32 AM
You are in the Chevrolet Malibu
What is this discussion about?
Chevrolet Malibu, Chevrolet Malibu Maxx, Fuel Efficiency (MPG), Hatchback, Sedan
#156 of 471 Re: Still pleased with the MPG [packer3]
Jun 07, 2008 (10:52 am)
I have a brand new 2008 Chevy Malibu and it is getting between 17 and 18 MPG. It is a mix of city and hwy driving. The service dept tells me it will improve at 5 to 10,000 miles. I am very leery. Also the air conditioning only works on maximum. What do you think?
It is the 4 cyl engine too. THis is worse than the 6 cylinder 99 Olds intrigue that I was driving.
Jun 08, 2008 (4:05 pm)
I doubt the gas mileage will change, they told me that when I got my 04 BU. Leased the V6 and the city mileage never moved from 15/16 mpg stop and go in the city, straight highway however was up to 37 mpg. In the winter the mileage went down to 14/15 mpg in the city, that's typical of GM cars from my experience.
#158 of 471 Re: Still pleased with the MPG [hcc]
Jun 10, 2008 (2:44 pm)
The air conditioning should NOT only run on maximum. Some aircon controls are hard to understand, check your manual. My wife was running our Honda Odyssey in the "Defrost" mode (she left it on after needing it one time) not realizing that in the Defrost Mode the aircon is ALWAYS but DOESN'T show the little green aircon light glowing - and killing gas mileage.
Jun 17, 2008 (6:58 am)
We have a 07 Maxx LT with about 25K on it. The longer we have had this car, the better the miliage has been. When new, it was getting 28-29 on the highway. Now it gets 29-32. I have found that at 75mph, it get around 28-29mpg, but at 70-72 mph, I get the 31-32mpg.
Around town miliage is to hard to calculate. It depends on what around town driving we do. But typically, we average around 35mph and 25-26mpg on a tank of gas with mixed driving.
Plus we can haul as much crap as a small SUV
#160 of 471 2008 LTZ MPG
Jun 17, 2008 (5:37 pm)
I've had my LTZ (6cyl/6spd) for one month. I've filled it four times and have gotten 27.6, 25.1,26.4,25.0 over this period. The 25.x tanks represent a roughly 50/50 mix of highway and city driving, the other two were mostly highway. Not bad; my Mazda6S is a 6cyl and gets less, and it's only got 220hp (still a great care though).
#161 of 471 Something's up with my 2005 LS
Jun 17, 2008 (5:42 pm)
I really like my 2005 LS. Nicest car I have ever owned. however, the one thing I do not like is the gas mileage. the computer info display says that I am getting 19.8 or 20.8 MPG. And it seems about right. I got this car with 19k on it in Jan 2007 it now has 28k on it. I just do some local driving. don;t use it for work. just for errands here and there. From all of the reading I am doing, MPG is the one thing that everyone loves about this car. could it be the fuel filter? the tires are inflated properly. I changed the air cleaner about a year ago so I know that is due.
just wondering what the deal could be before I ask this loaded question to a mechanic and they start seeing $$ signs and suggest a tune up
thanks for any input
#162 of 471 Re: Something's up with my 2005 LS [javon7065]
Jun 18, 2008 (6:22 pm)
Try the following:
1. Find the true MPG over a period of time (miles passed divided by
the fuel purchased), writing down and resetting the DIC reading
(plus compare the distances with the odometer readings.)
(I do the recording at every fillup, then compare the real MPG
with the one DIC shows.)
2. Post the data on your average speed between the fill-ups. While you
are not using the car for work, you may be stop-going excessively
-- the average speed is some indication of your driving patterns.
3. If you haven't done so recently, dump a bottle of fuel cleaner into
your tank during a fillup.
You mentioned replacing the air filter: did it have any impact on the
MPG? Is it a good filter? Was everything clean and clear in the area
How about your oil? Changed well and often?
My two 2005s (more economical than your LS, obviously), have roughly
this regular pattern, usually (from the two last readings on one of
tank-mpg 24.94 computer 26.1 speed 24
tank-mpg 26.93 computer 28.0 speed 25
#163 of 471 Re: 2008 LTZ MPG [au79en]
Jun 18, 2008 (6:26 pm)
Did you record the average speeds from the DIC? Are your numbers from the DIC or calculated from your fillups?
#164 of 471 Re: Something's up with my 2005 LS [javon7065]
Jun 19, 2008 (3:08 am)
based opn yuor statement that you just use the car for errands, here and there..what distance do you drive...16 months ownership with only 9K driven tells me you dont average very long trips...short trips, city traffic, stop and go will generate the worst MPG. I would simply suggest a good fuel injector cleaner, a new air filter, oil change and hand calculate your mileage....the DIC can be up to 2 MPG off in its calculation.....but I would suggest you probably will not see better than 22-23 MPG based on you short trips.......
no need for a tune up.....the first isnt due to 100K as I recall, but consult the owners manual...
#165 of 471 Re: Something's up with my 2005 LS [malexbu]
Jun 19, 2008 (5:57 am)
Thanks for the recommendations. I'll admit that I have not yet done the manual MPG calculation. I just read in the manual that you can reset the DIC MPG info, so I just did that. This really was not an issue until gas hit $4 a gallon. since I get gas kind of infrequently, it seemed like gas was about .15 higher from the last fill up each time. so like most peopal now, I am looking into how to get better MPGs. I know that the stop and go driving I do is the worst but I just thought something was up since it was reporting MPG in the teens.
Oil changes are regular, always at the three month mark versus the 3k mark due to the limited use. I'll replace the air cleaner again. wasn't concerned about MPG when I changed it last year.
what type of injector cleaner is recommended? I have never used any of that kind of stuff.