Does each bar stand for 1 gallon?

[hans_fh]

I am talking about the fuel display on Yaris. I just wonder if each bar stands for 1 gallon?

BTW, how you guys can calculate the actual mileage?

Thanks!!

[ceres]

Nope. Only 8 bars.

[swng]

No. If you want further information, please visit the Fuel Economy Thread where you can dig out quite a lot:smile:.

[spkrman]

No. If you want further information, please visit the Fuel Economy Thread where you can dig out quite a lot:smile:.

yea thats an extremely useful thread!

[RogueYaris]

each bar would represent approx 1.3875 US gallons of gasoline.

[Katana]

Each bar lasts the same?I think that the lower bars last less.

[nsmitchell]

I know I get about 200 miles on the top half of the gauge, and only about 100 or so on the bottom half. I wish Toyota would make the gauge a little more acccurate. My 04 Tacoma was the same way.

[the_saint]

I think pretty much every car out there now has a non-linear fuel gauge. I had a loaner Mazda6 for a few weeks and that thing would get something like 80-100 miles before the needle would even move! But once it hit 1/2 tank it would drop like a rock.
My Mazda5 is the same (first 1/2 lasts longer than the 2nd 1/2) but not to the extent of that Mazda6.

[swng]

The top bar is especially misleading. Depending on how full you fill up, it can be equal to two or more other bars. However, as said by the member above, other cars' gauges may also suffer more or less from the same problem of nonlinearity.

[spkrman]

i have yet to see a 100% linear car... I don't know of anything with a square tank, thats the only way you would ever get an accurate reading, and you can't have one, because as you get low the gas would slosh around, and cause lots of issues. You could tilt it back, but as far as the guage is concerned, its no longer square :)

[KSIbucky]

did you even think about looking at you manual

[Katana]

I know I get about 200 miles on the top half of the gauge, and only about 100 or so on the bottom half. I wish Toyota would make the gauge a little more acccurate. My 04 Tacoma was the same way.

Μe too.Well said!

[Driver]

Since there are 8 bars each bar is 1/8 of a tank or 1.3875 gallons. I view 2 bars as a quarter of a tank and 4 bars as half a tank. :biggrin:

[gonzo452001]

it tells you about what each bars means in the manual

[Katana]

Really?I have to check it out!

[PetersRedYaris]

I fill up when the last bar begins to blink. Usually takes just under 10 gallons. The 07' U.S. hatchback tank holds 11.2 gallons, so your safe from running out. I don't know fuel compacities on other years/models. Filling 10 gallons makes fuel consumption calulations very easy. For instance; 345 miles between fills = about 34.5 MPG. 380 miles = about 38 MPG. Simple!

[Driver]

I fill up when the last bar begins to blink. Usually takes just under 10 gallons. The 07' U.S. hatchback tank holds 11.2 gallons, so your safe from running out. I don't know fuel compacities on other years/models. Filling 10 gallons makes fuel consumption calulations very easy. For instance; 345 miles between fills = about 34.5 MPG. 380 miles = about 38 MPG. Simple!

:frown: You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full. :eek:

[wwwh355]

Since there are 8 bars each bar is 1/8 of a tank or 1.3875 gallons. I view 2 bars as a quarter of a tank and 4 bars as half a tank. :biggrin:

In fact, the reading is indicating the gas level, not the volume.
So obiviously, each bar means differently.
First bar will last longer is because when u filled up your tank, the gas level is higher than what the gas level detector can measure. thats why the first bar always last longer in almost every car.

[swng]

Originally Posted by Driver:
"You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full."

Agreed fully.
Apart from the technical reasons (I believe there can be many, including some that I don't even vaguely understand for sure) to leave the tank at least 1/4 full, from a practical point of view, it makes good sense to always have a car that can go one hundred kilometers plus (60+ miles) ready. One never knows when an emergency trip is needed when no time can be wasted in refilling or when there is actually no place/opportunity to refill.
From a fuel economy angle, more fuel left in the tank also means more waiting time for the gas price to drop from a temporary high. Don't ask me how to know when is a high price temporary though. It may just be subjective judgement or intuition
On the other hand, PetersRedYaris' method is good. If it can be modified to, say, refill once the third last bar disappears (that means two bars remaining), it is still a simple and useful method to help gain a fairly accurate impression on a car's fuel economy. May I invite you to post your various observations on fuel economy on the Fuel Economy Thread anytime?

[Typer73]

:frown: You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full. :eek:

Maybe I've been lucky? I also fill up when the bar flashes, because I always filled my previous car when the "red light" came on (both meaning about a gallon left). The previous car was a '92 olds cutlass, which now has 160,000 miles on it & is still going strong. If I can get away with it in an American car, I can sure hope to get away with it in a Toyota!

[Katana]

:frown: You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full. :eek:

Correct.

[keesue]

Does anyone know if there is an in-tank pump in the Yaris?

[eTiMaGo]

Does anyone know if there is an in-tank pump in the Yaris?

Yup, there's a pump and a pretty complex system for collecting vapor and so on, so that it's a returnless fuel system.

[keesue]

Ah, thanks. Well, in that case, the reason Toyota says to fill up at two bars is because the fuel in the tank cools that pump. When it is allowed to run without being submerged, it gets hot. May not be an issue but its good to know why, eh?

[hystria]

:frown: You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full. :eek:

well, actually the fuel pump sucks always from the bottom of the tank. The pump is vertical and the suction is very close to the bottom of the tank and there is a filter bag to prevent sucking any dirt from there.

The real reason they suggest to keep a good fuel level is because it greatly helps to keep the fuel pump colder which prevents from premature wear, as the pump dissipates more easy the heat produced by the friction of the piston if immersed in a fluid. Apart this main reason, there is another one: the fuel tank is in metal. If the fuel level is low, humidity tends to appear on inside the tank. eventually, over the years leaking may develop by corrosion starting from inside. I've seen this on a 1990 civic, the tank was perforated and leaked although on the exterior there was no trace of rust (had anti-rust treatment).

[keesue]

Yep! Well said.