I don't think you have to worry about that. The odometer system and the average MPG estimater use different data sources. At worst the odometer has an influence on the MPG thingie, but not vice verse, to the best of my knowedge.docswitzer wrote: I only wonder if the entire odometer system is skewed or if it's just the trip odometer. Speedometer matches my GPS, but I haven't compared GPS mileage to the vehicle odometer yet. Will observe over the next few days.
I very rarely go over 70. I try to keep my RPMs in the 3000 to 3300 range or less. You may have read that I learned that it was more economical to coast in gear than in neutral. Seems that when you release the accelerator above 1500 RPM while in gear, the injectors shut down. If you're coasting in neutral, they're squirting fuel the whole time, same as idling. Cool thing to know. So now I coast in gear whenever possible.MrWiggles wrote:Just wondering; how fast do you go on the highway? I tend to stay at around 75-80mph and mostly drive highway but seem to always get around 33-35 mpg max. Hoping I can figure out how to squeeze a little more out of it if I can.
I think you can pretty much count on it. This article, a little heavy on the math, pretty much says it all. Ignore the math and just look at the graph set out at the bottom of the page. The effect of speed on MPG is significant.MrWiggles wrote:Thanks for the reply! I started shifting at much higher rpms, but as I get more comfortable with the car I have learned I can easily shift at lower rpms without worry. I keep the car in gear until the last second, so I'm good there. I wonder if the main difference for me is how I drive on the highway. I may have to test this out after the next fill up.
I figured that the trip odo had to be fed from the main odo. Confirmed with my GPS. Guess it's just isolated to the computer MPG. Biggest MPG killer is the 15% loss of efficiency with ethanol. Rated @ 40 x .85 = 34, so I am spot on. Still love the car! Thanks!txchamps wrote:I don't think you have to worry about that. The odometer system and the average MPG estimater use different data sources. At worst the odometer has an influence on the MPG thingie, but not vice verse, to the best of my knowedge.docswitzer wrote: I only wonder if the entire odometer system is skewed or if it's just the trip odometer. Speedometer matches my GPS, but I haven't compared GPS mileage to the vehicle odometer yet. Will observe over the next few days.