dziuniek

still... I've noticed that lots of cars have higher mileage w/ auto nowadays, which I think is complete poop. I guess no one assumes that if you have a 1.5mile hill you can put it in neutral, but thats just me haha....

tC9o9

like tikhboy said, driving 55mph here in cali will get you killed, thats way too SLOW.

i drive about 80-90mph on the freeway with i would say about 70/30 freeway/street driving and i get about 25mpg which is pretty darn good considering i abuse my car.

chazm

You guys have to remember too that with milage you get better MPG.....now i mean after 5k miles, at 30k miles you car would have peaked out on mpg increase....unless you drive smarter.

flintgauge86

My 350Z gets 27-28mpg in the city when it's only supposed to get 19-20... I think it's because I drive pretty easy and just cruise in 6th gear at 45 most of the time, at 1,600 rpm... just sippin' the fuel, cuz it has to have premium.

tekisui

You got a 6th gear?

LUCKY!

SoccerBoy_AP

The usual trip stats from a trip back to my parents place:

Average Trip Speed - 80-85 MPH
Trip Length - 200Miles
Average MPG - 32

All I have is a Injen full length CAI...

flintgauge86

yeah, I always got great milage in my tC. 26mpg with mixed driving, mainly city. I think Toyota low-balled this one.

Davie06TC

I love the gas MPG in the tC

dziuniek

well good enough for a 2.4L

tekisui

Yeah if they advertised those kind of numbers, they'd def. move more cars... As if that's a problem right now or something

jetlounge

iTrader: (3)

ok, but if time is money...who wins out?

once camp stretches their dollar by driving more slowly and conserving gas. the other camp hauls ___ and gets to their destination 20 minutes sooner everytime. if they can convert that saved time to money...

mtopper518

Correct me if I'm wrong on this but... wouldn't leaving the car in neutral and rolling down a hill consume more fuel than just popping the gear into 5th and letting the momentum of the engine pull the weight of the car? I could be totally wrong here, but that would seem like a logical conclusion. When you're in neutral a car has to use just enough fuel to keep the motor running right? Then you have the car rolling in gear and the motor already has momemtum going so no need to keep the engine idleing.

Can someone either confirm this or put me in my place? I don't know much about cars really but this is what I've been told.

hunterUnknown

iTrader: (1)

you're right. idling uses fuel, leaving it in gear does not use gas when you're off the pedal.

prove it by doing this: when you determine its safe to do so, while in gear, in a straight line, turn your key to ACC or even off. your control systems will turn off, but your car is still moving as if you just arent on the pedal. injectors wont work. bam, no fuel usage. turning the key back into position simply reactivates your throttle.

yes, you save tremendous gas by coasting in gear.

mtopper518

Sweet thanks for the reply. I'm glad there's some consensus on this. Someone told me this when I first learned to drive stick on my first car ('76 Ford Courier) and I've done it ever since. Even on surface streets I'm the guy coasting that everyone is flying around because they're in such a rush. But hey... I go a week and a half or so between fill ups so no sweat off my back.

hunterUnknown

iTrader: (1)

i fill up every 3-4 days no matter what i do, but i still get 25-27 mpg city, so im happy :D only had this tc for 3 months and im hitting around 11k miles. i may beat my old tc's mileage rate. on the old one i had 39k in 18 months. it was automatic and got 22mpg on average.

Dr_Isotope

iTrader: (1)

How did this myth even get started? Fuel mileage is a combination of engine load and RPM. Coasting in gear does not remove all of the load from the engine. Coasting in neutral does.

It's very, very simple. I just look down at the ScanGauge.

Coasting down a hill in 5th gear @ 70mph = ~70-80mpg.
Coasting downa hill in neutral @ 70mph = ~210-230mpg.

The tC consumes around .3 gallons of fuel at idle. So it will burn 1 gallon of fuel for roughly 3 hours of idling. Find a mythical hill that you can roll down for three hours straight, and you'll burn one gallon of gas. If that hill is 200 miles long, and it takes you three hours to get to the bottom, you would get 200mpg.

hunterUnknown

iTrader: (1)

you dont use any fuel in gear without the throttle being pressed. you cant just leave out my explanation.

how do you suppose engine braking works? the resistance of an engine spinning without fuel against the speed of the wheels.

no fuel is better 'mpg' than .3

Dr_Isotope

iTrader: (1)

Are you at all aware of how an internal combustion engine operates?

Let's keep it more simple. You know how you can hear your exhaust go "brrrrrrrrrrrrr" when you let of the gas on a downgrade? Well, if fuel and spark were cut off completely (as you seem to beleive) you would hear... nothing.

Man, there is no such thing as free energy. Just because you're not pushing the pedal doesn't mean the serpentine belt stopped moving, or the alternator went to sleep, or the cooling system stopped cooling... Everything in the car is powered by gasoline. The only way to have zero fuel consumption is to turn the car off-- and take all of the accessories with it.

A car... traveling downhill in gear... will use more than one that is idling. Why? Because the engine is loaded! Engine braking uses fuel! It's not moonbeam magic, it's force against resistance! Ugh.

You know what? Nevermind. You're totally right. Commence to in-gear coasting, ad nauseam.

hunterUnknown

iTrader: (1)

well, try turning your key to acc or off while moving and in gear. doesnt your fuel system shut down along with throttle control? yet your engine still runs...

Dr_Isotope

iTrader: (1)

Umm... if you're going to turn the car off and lose all accessories (and hydraulic pressure) you may as well take the trans out of gear, no? You know... less frickin resistance when coasting out of gear? Oh crap, that came around in a circle, didn't it.