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poor gas mileage?

52615 Views 45 Replies 17 Participants Last post by  Bob in MA
so i've noticed more and more lately that my v seems to eat up a lot of gas, and quickly. probably happened around the time i had some issues with my o2 sensor. but its causing me some concern now.

was wondering what i could do myself before having to take my v in for some diagnostics or even some routine maintenance

any ideas or help would be greatly appreciated :)

I've also included a little picture of a v gas gauge and will explain an example of my concern. My gas runs low (bottom red line) and I fill up (to about the top red line) and drive for lets say around 100km (62miles) and my gas dips down to the half way mark which to me is pretty darn quick. Unless im looking at this wrong. If anyone can quell my concerns that would be great ;)


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Thats pretty good! During the winter I get around 400-430 kms out of a full tank of gas. I almost always drive it till the gas light comes on. During the summer I can get up to 500-560 kms.
Aren't you a 5 speed? Im still getting 500 to a tank.
No CVT 1.8L. I thought I would be getting more as well, but I think the roof racks I have might be causing the lower gas mileage
Lol oh man, how much does it weigh? Even with the fairing, there must be some drag.
i wish i would get 500 + kms per tank

i will test that when the weather gets warmer
Even with my CAI, I can manage a 540km tank in the summer, thats when the fuel light turns on. I've stretched it to 600 on some occasions.
Hi to all, Two thoughts while reading the symptoms, Did you have an oil change before the mileage dropped? Possibly wrong oil was used, I think you said dlr does changes. A/C use, at some point, the A/C comes on with the defrost, or in my S when I switch from defrost to heat. (I'm new, 850 miles on it) The A/c may be staying on, although the light should be lit in the button.

I've noticed that the odor or fumes coming out of the tail pipe don't smell anything like fumes from other seasons. Fuel not supposed to be any more than 10% alcohol. Does your fuel have more, or higher limits of alcohol? I'm not up on Canadian gas.
During winter, gas is loaded with more antifreeze detergent and ethanol. Supposedly to help combustion in -45C conditions, cause thats what it's been tested in. It burns a lot more than summer gas, since it has no antifreeze and less ethanol. The other factors include longer warm up which uses more fuel and the A/C running with the heating and defrost system, whether or not you turn the A/C switch on, its always running.
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