Second tank of gas 25.62 MPG
 

I filled up a few days ago and meant to take some pics... obviously because the car is premium, the cost is still higher, but I thought that was good for only the second tank considering I had run the A/C some, got on the car a little, but mostly cruised. Keep in mind the speed limit where I live is still 55 on the highway and I don't drive much over that.

I don't know how many miles the first tank got because the dealership filled it up and I don't know how much was put into the car or anything... it was driven a little ways before it got to me and I also don't know if the mileage was reset upon filling.

Anyway... 450 miles on the tank exactly and the fill up was 17.5 gallons... +/- a little. Not bad for a car with only a little under 1000 miles and not broken in yet.

55~65 you should be getting about 28~30
over 70 drops like hell, around 22~24

edit*
after about 3000 miles that is

yeah, a lot of in town driving though.

Well I got ya beat so far. Filled my tank up yesterday and drove a little over 100miles, still have a completely full tank of gas according to the gauge.

:shakes head:

I shake my head at the gas gauge too. It's those last dots that go fastest. Or is it the first couple last longer?

The dots lie, mine will have 2 dots remaining and the warning light comes on... I fill up and see I only put in 15 gallons.

Yep. So Cal here and we drive 80MPH....get constant 20.5MPG. I should drive like a grandma @ 65MPH, but if I drive that speeds on the 5 or 22 freeway, someone will end up killing me.

Agreed,first few dots last very long,after that anything near half tanks,it drop very fast,i think our tanks should be big on top,small at the bottom.

yah this is the same way on most cars though, even with needles. it take a while for the needle to move while full but once it passes the 1/2 mark it dips pretty quick....

Gas gauges and trip computers are skewed towards fooling the driver into thinking that fuel economy is better than it really is. That is why the top portion of the meter takes longer to drop...it's been programmed that way.

I actually try to check the dots and I seem to get 20-25 miles per dot.. with the occasional being less.

I guess they do that so people don't run out, but at 450 miles and filling up 17.5, i'd be close to 500 miles on tank before being completely dry... not to bad for a sports car lol

Just got back from a trip to North Carolina and I got 27.4 on one tank running 70-75 with AC most of the trip. Might attribute some of that to going downhill in the mountains though. :driving:

Another point to consider, cars sold in America also have a "cushion" of sorts built into gas gauges. If your car is saying you're bone dry, you probably have another 1/2 gallon or so, and even the projected distance until empty is usually low by a little bit. This is so people who try to run it to the edge still don't run out of gas unless they are completely inept

25mpg is damn good if it's mostly city driving.

i will get 26+ with hwy driving, however my DD is all city driving stop and go so I see around 18-20 on an avg.

I get about 20.5 mpg. Mix of city and highway. Couldn't say how many miles I get to the tank cause I only gas up 1/2 a tank. That extra 9.5 gallons is a lot of weight. Ever notice how much more fun the car is with about 2 dots left lol

I live in a small town so yes there are little trips here and there where it's 25 mph speed limits.. you know the kind of place... old redneck small town with not much in it ... except loud *** trucks that I may start shooting with a BB gun... there is some highway as well. I would say overall it's probably 80/20.. but the 80 isn't really highway, it's 40 and 50 mph backroads. On a 15 or so stretch of high way the gauge showed a little over 30 mpg... of course that's only 15 miles, but the gauge does seem to be quite accurate which I like... my MS3 was about 2-3 mpg off... it was telling me I was averaging 30.4 over 4 tanks... when I would fill up I would always be 27 or so.

how many miles do you have on your car? I just wonder after a few thousand miles after the engine frees up a little more if i'll do better. I think I will.

Then again, I would imagine once I add the K&N's and post maf tubes along with the amsoil i'll get better mileage as well.. I always have in my other cars after the first oil change.

i dunno how you guys are getting such great mileage, unless you're driving long distances on the highway. i'm consistently averaging ~16mpg

I get it because I don't drive the car hard. If you can keep your foot out of it, use cruise as much as you can, slow down a long way before lights and try to catch them green. I do rolling stops all the time too lol. Don't leave the car running when you go in somewhere if someone is in the car... let them bake :icon18:

Anyone else find yourself trying to explain to people how many "dots" of fuel you have left? And anyone who doesn't know, we have 16 dots for full.

Respectable mpg in my opinion
 

I just returned from a trip from Des Moines to Columbus OH and back, a total of 1,331 miles and averaged 27.8 mpg with an average speed of 68 mph for the entire trip. Best mileage was 30.5 mpg and worst segment was 25.3 mpg (very strong head wind.) I typically drive about 5 mph over the limit and speed limits are 65 mph in IL and OH and 70 mph in IA and IN. This average includes some city driving in Columbus and several stretchs of road construction, especially in Indy. I've got about 5K miles on the car.

Fuel gauges in cars are a linear measuring system, but measuring something that is not linear. So no, they are never accurate.

The fuel gauge is just measuring the height of the fuel in the tank. The top of the tank is much wider and contains more fuel, so it goes down slower. The bottom of the tank is much smaller, so it drains quicker.

http://i905.photobucket.com/albums/a...nk-172a002.jpg

19mpg's solid is the best I can do. Lol. Its hard to granny a Z.

Not in my experience. My mpg calculator on my car is slightly pessimistic. It said I got something like 25.6mpg on the highway (averaged both ways for accuracy) when manual calculation revealed 26.0X. That said, I find it hard to believe that 370Z's are not getting 30+ on the highway unless it is at altitude.

I think some of you must be driving up-hill and not noticing it. It's easy to do. I drove across a bridge one time and the read-out showed nearly 30mpg. Then I took it the other way and it sat on 22-23 mpg. Apparently, this 2 mile long bridge was NOT flat/level. It sure looked it, though! Easy to do. Average your mileage going both ways on the same stretch of highway for accurate measurement.

Yeah, whether they round up or down, I've found the trip computers to be wrong on mileage over time.

Doesn't bother me, really.

That was over @125 miles. I'm with you. .4mpg over 100+ miles? Who cares? You put gas in it when you touch 1/4 tank and that's that. People should stop being such nigglers.

:iagree:
I seem to always be at 19 city..even when I TRY to drive it for best MPG.

22-24 for over 70? no way! I drive 75-80 about 95% of the way into work and I typically average 26-27 MPG on the way there. I never really get under 25 MPG even on the way back in the mornings when I deal with a bit more traffic (and thus average lower speed).

I do around 20, but that's a mix of caning it on back roads and a lot of highway driving.

Why are u so happy when you drive speed limit and get 25mpg lolz. The 370z was built to drive over the speed limit lol

You can drive the speed limit and get poor mileage. Don't believe me? Go 55mph in second gear :roflpuke2:

Those of us that get only around 19-20mpg's. I found that if you use cruise control as often as possible. You can squeeze an extra 2 or 3mpg's. But I don't have the patience to keep using the resume/accel button. Lol. I just like driving quick.:driving:

I hear that. The only place I've ever found a use for cruise control is military bases. Because they take speeders very seriously.

Perhaps it's just one car vs. another one... or the way it was broken it... the way it's driven, the roads... etc.

I get on it sometimes, but I can't afford tickets and rising insurance.