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Hatchbacks Toyota Yaris Toyota Yaris Real-World MPG
472 messages, Last post on Oct 23, 2009 at 11:40 AM
You are in the Toyota Yaris Forum. Your Host is pf_flyer
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Replying to: asa805 (Jun 21, 2006 12:14 pm) 
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Replying to: ronald711 (Jun 22, 2006 10:37 pm) 
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Replying to: cohencoy (Jul 06, 2006 11:28 pm) 
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Replying to: lucynethel (Jul 07, 2006 3:15 pm) 
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Replying to: asa805 (Jul 11, 2006 7:36 pm)
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Replying to: lucynethel (Jul 22, 2006 4:32 pm) of MPG claims on this site!! Some of these folks must be running 100 psi in their tires and gasing up at pumps with bad Gauges !!
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Replying to: lucynethel (Jul 22, 2006 5:39 pm)
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Replying to: lhanson (Jul 23, 2006 3:36 am)
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10 days ago, the odometer on my 2008 Yaris Liftback turned 1,000 miles. Usually by this mileage I find that I can count on the mileage I'm getting to be fairly consistent, as the car engine is broken in, the rings are seated and it's time to get some accurate readings. I decided to install a ScanGauge II to provide real time mileage. The installation was a snap which only took about 15 minutes. In addition, it offers many other functions as you will see in the enclosed link. (source) http://www.scangauge.com/ The other area I've continued to experiment with is tire inflation pressure. Typically the auto manufacturers list a number that is arrived at from a number of considerations. One of the more influential consideration is tire noise, and ride quality. Therefore the number listed on the door sticker is usually at least 5 to 15 psi lower than the pressure that will return the best mileage. Another fact to be aware of is you can use the number printed on the side of the tire. Many people think this is unsafe, but to the contrary it's perfectly safe and it's the reason that the tire manufacturer lists it on the sidewall. Without that number there would be no way to know the upper limit of both inflation pressure and the tires load carrying capacity (the number that follows the inflation number) . That said, there is one drawback if one chooses to use the max inflation pressure and that it that it will wear the center tread faster that the tread near the shoulder of the tire. Just like under inflation wears the outside shoulders and leaves the center of the tire with lots of tread remaining. What I have found through recording the data supplied by the Scangauge II and trying a wide range of tire pressures, is that I get the best mileage with the tires on the Yaris at 12 psi over the door sticker. I will continue to monitor the wear, but expect it to be even across the entire tread, as I have used 10 psi over in the past with no problem whatsoever. However that was with other models of cars and each has it's own unique response to tire pressures. For more tire info, here is a link (source) http://www.michelinman.com/glossary/#u Since the installation of the ScanGauge II and choosing to run 12 psi over sticker, I have ran through three tanks of gas, and I'm now on my fourth. (I drive a lot). The first tank was very close to 50/50 city/freeway and returned 36mpg. The second tank was nearly 95% freeway  68 mph and returned 44mpg. The third tank was very, very mixed, therefore hard to estimate how much city vs freeway driving, that tank returned 37mpg. At this point, I'm very satisfied with the results and the more I drive it, the better I like this car. I especially enjoy the ScanGauge as it's a great reminder which helps me drive in a much more consistent way with an eye on mileage. Finally there is nothing like measurable results. Facts, not seat of the pants estimates. Cheers!
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Replying to: podred (Jan 18, 2008 5:56 pm)
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