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poor gas mileage?

52613 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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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.
If you are getting 33 at 1,000 miles, it probably get better. When I bought my '11, I was told that the car would 'loosen up' at 1500 miles, and mileage would improve. At 2000, the mpg got better.

I drive 75% hiway,25% city, coming up on 15,000 and get 34 or so. Summer w/ AC costs about 1 mpg, warming up in cold weather also 1 mpg. On longer hiway trips have cracked 36, not going slow. My Versa is a 6 spd HB.
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