I suck at driving... 8km/L that sucks
 

8 km/L = 19 MPG
12 km/L = 28 MPG


Okay, so I don't know what I am doing wrong... Most FRS Driver get 12 km/L... I get 8 km/L






FIRST TEST:
1st gear shift to second @ 2000 rpm
Other gear shifting to next gear @ 3000-3500 rpm


SECOND TEST:
1st gear to second @ 2000 rpm
Other gear @ 2500 rpm


Am I doing something wrong, every on the car is main component. I am thinking if Toyota or Subaru can reflash the OEM tune.

I average around 30 and that is spirited driving in the city (not shifting till 4k RPM's, or going from 0 to 35 or whatever the speed limit is (never less than 15) strait to fourth, and then whenever getting on the highway it is WOT to the speed limit....

So I can not say what the cause would be unless you do a lot of city driving and hardly no highway driving.

I am okay with getting 20-25 MPG. I aim at this, I do 85% city and very little highway.


However, I drive in the city when there isn't much traffic.


Assume you're in first gear, you will wait till you're 4000 rpm to shift to second? Then wait till your at 4000 rpm again to shift to 3rd?

If you turn on the gear display on the dash it will notify you of the prime time to shift for fuel economy. You should try it out and see if there is a difference.

I get 24.8mpg on the regular, with that decreasing quite a bit each time I add a new mod for a few weeks.

No really the only time I use 2nd gear or 3rd gear is if I am going to be going faster than 35 such as getting onto the highway or racing then I am wot through all gears till I get to the speed limit. Otherwise it is 1st strait to fourth and wot through first. The exception being if I am traffic then I generally shift around 3000 rpm or so.

sometimes if I am not in a hurry (which does happen from time to time) I will shift around 3k or so while entering the highway

I would suspect most of the reason is you are 85% city driving, when you are stopped you are getting 0 miles a gallon, when the car is not moving you are getting 0 miles per hour. When you go to slow down if you simply down shift instead of going into neutral that can effect it too.

didn't even know that was a feature lol how do u turn it on?

It could also be the gas you are running too.

For the most part winter blend gas sucks.

I personally run 93 with no ethanol so that can effect it as well.

I know many people run 87 which according to the manual it is recommended to run 91 so that can effect the mileage as well

What RPM to do you shift?


I go to Neutral when I know I will come to a stop. I don't downshift unless I brake and I lost a lot of speed.


I don't understand the inept car. You mean I get 0 MPG rating when the car is not moving? Just running?

Its on, I tried it.. I get 8.5 KM/L

Shift points have much less to do with fuel economy than how much time you spend accelerating, slowing down and idling and how you perform those tasks. Even a Prius gets shit mileage when you treat the pedals like on off switches.

You can redline in every gear to get up to the desired speed but if you drop it into a high gear and set the cruise control with the rpms <3,000 over a long period you'll get great fuel economy.

Since you're constrained to city driving it's going to be tough, you need to be very smooth with your foot inputs, accelerate briskly but not quickly, it's better to get to cruising speed sooner rather than later as you're wasting gas stretching out the acceleration time. I've heard before that you should pretend that there's an egg between your foot and the pedals, the metaphor is a little silly but it gets the point across: gentleness.

The biggest gains will be slowing down, coast in gear as much as possible, anticipate traffic as far in advance as you can and minimize your brake usage, downshift through to second to get maximum coasting in gear. By doing this the fuel injectors shut off meaning you're burning basically no fuel.

I'm sure you've figured out the obvious tips, not zipping between lanes doing 5+ kmh over the limit and all that, you can try drafting as well but at city speeds (<55km/h) the gains are small compared to 100+km/h on the freeways.

Good luck and honestly you aren't doing so poorly that I'd worry something is wrong with the car, sounds like you spend a lot of time idling and that's just a consequence of your situation, anything you drive will fall short of the average expectations (the 28mpg mixed vs ~21 mpg city)

It's because you have no load bro.

I will idle less, that's my next test. I think the car starter is taking my gas away lol (I'm in Canada).


I don't understand what you mean by accelerate briskly but not quickly. You are saying to accelerate kind of quickly or not?


How should I coast?

You want to get up to speed quickly and maintain a constant speed, this will be more efficient than very slowly accelerating over a long period of time, you don't want to put your foot to the floor though, maybe 1/8 to 1/4 throttle for me.

When you anticipate slowing down up ahead lift off the gas pedal, let the car slow itself down without using the brakes, downshift when necessary so you don't lug the engine, keep the engine >1,000 rpm.

I usually shift at about 3k-4k rpm. I've lost about 60km per tank with winter gas now, and I've only pushed the car once since it's been winter gas.

I assume you're also breaking the car in right now. That would probably affect it. It's better to rev a little higher with less of a load than it is to force the engine.
So it's better to rev to 4k while not pushing the pedal too much than it is to shift at 2k then put your foot to the floor to try and go faster.
Also, as you learn the car you'll see where the power is and when you should shift.

Veux tu une explication en francais?

come join us in the Ottawa club thread http://www.ft86club.com/forums/showt...=5626&page=332

40,000 km. That little shift arrow is my friend.

The display shows L/100 km, not km/L. Very different measurements obviously.

How many km do you get per tank of gas?

I shift around 3200-3800RPM religiously.

This^
Does you mileage indicator say 8?
That means you are getting 29 mpg and are right in the ball park. I do mostly highway and very little city and get 7.3 (32mpg)

It's even better than that in canadian mpg

???????????????????

Imperial gallon > US gallon.

You suck at Driving.

I kid, but I don't even care about my gas mileage. I drive because its fun.

It just so happens to be expensive too :P

Bad enough that we already have two different measurements going without throwing imperial gallons into the mix!
Besides that doesn't make the mileage "even better" just the numbers.

I get about 31.5 mixed city and highway..not sure what you're doing wrong man but something isn't right

I get around 24-28 MPG with mixed highway and city driving. My MPG took a hit when it got cold though, which is somewhat expected.

I was at 27 mpg combined average. Now I'm at 25.6 thanks to a season of autoX :p

Lot colder here and put snows on and my mileage didn't budge even a decimal point.

Engineering student bro.

All of you get much better mileage than I do, even when I try to drive like a Prius owner.

Someone mentioned that I am studying engineering, he is right. I never said I got my fuel economy off my car. On the car, my average rating is 10 km/L


Using my calculation... I calculated 8 km/L. That is 37.5 L of gas while I traveled 300 KM. That makes it 8 km/L. I know very well that the car displays the L / 100 KM and the smaller number the better. It was a little insulting the someone assumed I was reading off this and made the rest believe.


Testing this:
1. Less idle time
2. Slight quicker acceleration
3. Shifting at 3500-4000 rpm

I don't drive on the highway usually and I get 19 mpg in the USA. I accelerate to the 6k (sometimes 7.4k) mark in 1st gear typically, then shift to 2nd and eventually to 5th. The area I live in is very hilly, and stop signs are every 1/2 mile on average, so it's really fun. I don't mind my mpg, with the 91 octane gas I have.

My parents' Highlander gets 15 when it's supposed to get 20. In my area, mpg, no matter how you drive a car, will only have a max variance of about 10%. I used to floor the Highlander, and the mpg only changed by 0.5 miles/gallon over the course of several tanks.

When I used to shift at ~3k and drive the BRZ as a typical automatic would, I only achieved 20 mpg. Driving 10/10ths, I still achieve 19 mpg; this difference might even be exaggerated because of the winter gas mix.

8 KM/L is normal for short city driving, thats' what I get every day, between 8-9 KM/L.
Even in my previous non-sporty 4 doors car with 2L engine I got the same number.
The number will be closer to 9 if I shift below 2000-2500 RPM as indicated by shifting point at the dash but the car feels so slow with that.
As long as I get 10 days with a full tank I am happy with that.

On the highway cruising with a sixth gear you should be getting 12-14 KM/L.

Perhaps I am wrong, but shifting at a lower RPM does not necessarily translate to better MPG's.

This is what I have found with the BRZ and it's instant mpg mode on the display. Going 35 mi/h in 6th gear will grant my about 60 mpg if I barely let my foot touch the gas pedal on flat terrain. If I press the gas pedal about 3/4ths, I hardly accelerate at all, but my mpg goes down to nearly 7 mpg. The gear and rpms don't dictate how much gas you use at a given time. How far down the gas pedal is dictates fuel consumption.

So, what I have found it that consuming more gas will push the engine into higher rpms, which gives the imitation that rpms are what dictate fuel consumption.

Accelerating at higher rpms provides a quicker acceleration, so the gas pedal is not pushed down for nearly as long.

Just filled up. 18.7 MPG on the last tank of Chevron 92 octane. 20% freeway, 20% city, 60% fun roads. The freeway and city driving is mostly to get to the fun roads. AT almost always in manual mode, "pedal dance" on fun roads, if that matters. Imagine how low I could get my MPG with a manual trans.

ETA: Your mileage (generally) is totally dependent on your right foot. If you want to be driven insane and be in genuine fear for your life, go for a ride with a Prius owner who's main goal is the greatest MPG he or she can get. Absolutely unwilling to drive with any sort of urgency when needed. You start to wonder if it will be the oncoming truck or some dude with a gun who will do you in.

Boring, but I've always assumed people knew how this works. Most of them are "No shit, Sherlock?" Top 20 Driving Tips to Improve MPG

Oddly enough, I use some of the techniques listed above, the main one being having a fucking clue and planning ahead. I realize there are perfectly valid reasons (the new me, do you like it?) to be seeking the best MPG, but this is really the wrong car for that.

Dude, How???????

When I first got my car, the government Energy Guide rated the vehicle as ~10km/L. I was getting a little better than that until I lent my car to two people when I was out of town for a couple months. In fact, a long highway trip that inaugural summer was way better than advertised! Last time I checked, the Scion website/Energy Guide advertises ~9km/L. I've been get EPA numbers for a year and a half now.


It is likely winter gas. Another possibility is 2 or 3 weeks ago, my low fuel light went on, I immediately drove maybe half a kilometer to fill-up and the pump said 42.5L after filling up. I could never recall the light going on and being more or less than half a liter from 40L to fill. Strangely enough I couldnt remember when I paid so little for gas.

When my wife drives either car BRZ or Corolla she gets about 20% worse economy than me driving round city.

I can get better economy driving much harder

She generally drives like a nun , but she holds gears too long both our cars are manual 6 speed

When im just crusing i will be in 5th or 6th light throttle where wife will still be in 4th maybe 5th

driving style makes huge difference

check out your Open loop fuel table example below, when your crusing arround you need to be trying to keep in the areas with highest afr. ir low load low rpm light throttle.

http://i.imgur.com/6W3B1GH.png

Cold temperatures and short trips increase gas usage significantly.
If you only go 10 kilos and shut it off for 4 hours of class all the time, the ECU will be using a cold engine map and more fuel.

Best mileage will only happen while the whole system is up to nominal operating temp.

Ouch....... Im on E85 with the supercharger and still get 19 average, 20-21 if i baby it, and 17-18 if i want to go have some fun.. less then 15 if im out driving like i shouldn't be.. But daily commuting is right in the 19's.. on 91 im in the low 22-23's having fun and 27 or so babying it. before any mods i was in the 35's


-Thomas