Juke owners

jlo370z

i noticed this last year and this year is no different.

every time the winter season comes, my gas mileage drops 4 mpg

summer time average 29.6 winter average 25.4

anyone else notice this?

I will admit to 4 wheel power slides on occasion

but even normal highway driving same

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❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

GaleForce

My winter gas mileage has definitely taken a hit during the winter. I assume it's from having the heater on all the time, running 16" snow tires, and driving in the snow. Sucks doesn't it.

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Vazquez08

My brother always tells me it's because of the winter blend gas...I guess it's not as rich...not too sure what he exactly means lol

jlo370z

i think he has that wrong, there is a summer blend that has additives that are used in city centers (high populated suburbs) to help with smog. all other times its a normal blend of gas

__________________
❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

jlo370z

yeah it does, wish we had 15 gallon tanks. I travel for work, and it feels like im filling up every other day in the winter

__________________
❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

Vazquez08

Makes sense. Thought I'd throw it out there but wasn't sure. Now I know so thanks.

jlo370z

I think it is mapping, I've noticed the revs stay up at idle much much longer do to the weather .


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__________________
❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

kenchan

jlo- huh, didnt know you had a juke.

yah, even my fit does to 29.5mpg in the winter time. usually 32-35 range.

winterized gas, long warm up map, accessories on, etc.

GaleForce

A bigger tank would be a plus. I have a FWD which has a bigger tank than the AWD, by 10L. I drive 120-130km daily and need to fill up every three days.

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ElVee

Cold rubber makes for higher resistance. Also, colder air means less tire pressure. Colder air is also more dense, which may encourage your car to mix in more fuel with the air mixture. Loss of energy for any slippage on snowy roads means your car needs to use more power to move than on dry days.

Worse winter gas mileage should be a relatively universal thing.

GaleForce

Exactly

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jlo370z

jukes are awesome, though they have little space.

I cant wait for a RS to come out to the area so I can check it out. though i wish it had the 240 hp they said it would have. instead of the 215

__________________
❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

Rockhound

Nope, he has it right. There are distinct seasonal blends and their sale is strictly regulated by the EPA. TL; DR...winter gas is of lower energy content and can contribute to lower MPG.

The blends differ in their Reid Vapor Pressure (RVP). RVP is the vapor pressure measured at 100 deg F; a higher RVP means that blend evaporates easier.

Colder, denser air in winter allows for fuel with a higher RVP, so additives such as butane are blended into winter gasoline. This means winter-blend gasoline yields less energy per unit volume than summer gas.

The EPA suggests this energy decrease is negligible, but it appears from empirical data that some cars are more sensitive than others, just as with ethanol and decreased MPG.

The other factors mentioned above obviously all weigh in, too, all conspiring to make fuel efficiency decrease in the winter months.

jlo370z

Learn something new everyday , thanks


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__________________
❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

Footloose301

Interesting. I've been very tempted to hop into a Nismo Juke. I was able to race them at Nismo Performance Academy in September and I got 1st place actually. Such a blast. I'm about to trade in the go's 2004 Pathfinder for one, but having a third car payment is not something I'm looking forward to.

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2010 40th Anniversary 370Z