![]() ![]() So that is why I average out all the fill ups and I still get 30-32 in Chicago driving. 5 gallon difference due to top off, vehicle load ( stuff in the trunk), level ground, different pump nozzle can all affect the amount of gas you get to put in. ![]() Yes I have a 5 speed and use a scan gauge to monitor my MPG, also use actual fill up gallons to calculate my MPG. Half a gallon can throw off your estimates. Good luck, but I would be surprised if you can see more than 30 MPG, given the roads you typically drive the most.Last ditch effort: How low do you let the fuel gauge get before crunching the numbers? Or do you have a separate fuel MPG gauge you're running? You might not be accounting for the actual fuel used. Have you had an alignment lately? If your tires have any sort of issues (not properly making smooth, straight contact with the road), that might be a source of inefficiency.Sounds like you've covered or will cover everything you possibly can. If you were in the 20-22 range, then I would worry. If you're hitting lights every other mile or so on "Nice longish roads with speed limits of: 45-55mph" this is the *average* mileage I would very much expect.The only way you're going to hit 30+ MPG consistently is spending more time on a highway without stops, at 60-65 MPH. I don't consider your numbers to be *that* bad. These steps may not do anything for my MPG, but should help the general health of my engine. I also will be cleaning my intake manifold (because there is a ton of oil in it) as well as replacing the intake manifold gasket with Toyota's newest version to avoid the all-too-common idle issues due to this faulty gasket. Having just bought my car at 70k without any service records, I've done or am planning to do a lot of the same as above. If that is mostly highway, something is wrong.If you still feel something is wrong, not knowing the mileage of your vehicle or maintenance history, I would:-check/replace PCV valve-check/replace air filter-replace the plugs (NGK or Denso Iridiums)-run a quality fuel system cleaner once or twice (like Techron)-clean the throttle body-clean the MAF and IAT sensors-along with VVT filter, clean and check operation of oil control valve itselfI am also working toward improving my MPG as much as possible. The new Matrix and Vibe have been engineered to accommodate a hybrid powertrain, which conceivably could come from either automaker, although GM's hybrid systems are geared to larger vehicles.Any codes?How many miles?Has it been like this since you owned it or has it slowly declined?Any engine modifications?Along with what jake75 said, is that 24-26 city driving? Highway? Mixed?I think for mostly city driving 24-26 would be acceptable. We'd have welcomed a turbocharged four-pot-perhaps the same 260-hp mill that adds more than a dash of dash to the Chevrolet HHR SS and would make a Vibe so equipped an excitement-division-worthy competitor to the Mazdaspeed 3 and Dodge Caliber SRT4. The automatic is standard with the larger mill, or customers can opt for a new five-speed auto with Driver Shift Control. A five-speed manual is standard, with an optional four-speed automatic with the base engine. The larger 2.4-liter engine has 158 hp and 162 lb-ft of torque, and has a 21/28 mpg estimated fuel rating with a manual. The base 1.8-liter four-cylinder engine now produces 132 hp and 128 lb-ft of torque, but remains fuel efficient with estimated fuel economy of 26/32 mpg in city/highway driving with a manual transmission. The new Vibe will continue to be offered with front- or all-wheel drive, and marks the return of the GT model to the lineup that was discontinued for the 2007 model year. The Matrix is built at a Canadian Toyota plant in Cambridge, Ontario. Word is that GM moved up Vibe production (at GM's joint-venture plant in Fremont, California) by a couple months to first-quarter 2008 to keep up with Matrix launch plans. What won't change is that the Vibe will continue to share its platform and certain powertrain combos with the 2009 Toyota Matrix that was unwrapped at October's Specialty Equipment Market Association (SEMA) show in Las Vegas. The new model has a more conventional roofline yet still appears sporty. Also missing are the current generation's integrated roof rails, which effectively disguised the tall, flat roof and allowed stylists to present a more sloping roofline while preserving cargo space. Gone, thankfully, is all that cladding, which presumably was there to fool people into thinking the tall wagon was actually an SUV. What has changed for '09 includes every body panel-some a little, some a lot-to inject some much-needed flair into the Vibe's styling. This will be the second generation of the Vibe, which, along with its mechanical twin, the Toyota Matrix, first hit the road in 2002 as a 2003 model. Pontiac gives us much-needed detail on its all-new Vibe hatch/wagon/crossover, which is scheduled to debut at November's Los Angeles auto show.
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