How many MPB (miles per bar)? - Page 4 - Toyota Yaris Forums

scape · 07-13-2009, 03:08 PM

Quote:

I was riding with my Dad in his pickup truck and he said "We'd better get some gas-the gas guage is almost down to 'P'".

"P?", I asked. "What does that mean?"

"Pedestrian!" he replied. ***

lol!

ellenbetty · 07-15-2009, 05:49 PM

I never paid attention to how many miles per bar. Some of you must have a lot of free time on your hands.

I was taught that the gas gage averages out the bounces from the fuel tank floot to come up with what to display. Since the gas float bobs up and down with every bump and twist in the road it is impossible to build a 100% accurate fuel gage. The idea that the Yaris gas tank may not be square is something interesting to think about.

The first reason I learned not to top off you tank is gasoline expands as it's gets warm, and you can lose gasoline. I had that happen after parking my Gremlin on a hill. The second reason not to top off is that most gas pumps now have a vapor capture system. The vapor capture system will suck the extra gas out. So you are just wasting money if you top off.

Back when I had a 86 Horizon it's vapor recovery system failed around 50,000 miles. Over filling the tank? Maybe. But the problem was covered by warrenty and a new after market vapor system was installed by the dealer free of charge.

Yaris Hilton · 07-15-2009, 05:55 PM

The vapor recovery system is why Toyota warns us not to top off.

As a long time topper, I've had problems with expanding fuel overflowing as noted above, and leaks developing in filler hoses. Gas on the concrete floor of the garage fills the house with noxious fumes. My sister had her house burned when such fuel soaked into the garage floor was ignited by a hot pan of wood stove ashes her son set on it.

I no longer top up the tank. I run it in fast till it clicks off, wait a few seconds for the foam to settle, then start it back slowly till it clicks off once more. (Doesn't take more than 1/10 gallon or so extra.) Gives me a consistent enough point of reference for tracking mileage without risking overfilling problems.

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07-15-2009, 05:49 PM	#56
ellenbetty ellenbetty View User's Garage Drives: 2 2007 Yaris 3 door liftback Join Date: Nov 2008 Location: Stow Ohio Posts: 182	I never paid attention to how many miles per bar. Some of you must have a lot of free time on your hands. I was taught that the gas gage averages out the bounces from the fuel tank floot to come up with what to display. Since the gas float bobs up and down with every bump and twist in the road it is impossible to build a 100% accurate fuel gage. The idea that the Yaris gas tank may not be square is something interesting to think about. The first reason I learned not to top off you tank is gasoline expands as it's gets warm, and you can lose gasoline. I had that happen after parking my Gremlin on a hill. The second reason not to top off is that most gas pumps now have a vapor capture system. The vapor capture system will suck the extra gas out. So you are just wasting money if you top off. Back when I had a 86 Horizon it's vapor recovery system failed around 50,000 miles. Over filling the tank? Maybe. But the problem was covered by warrenty and a new after market vapor system was installed by the dealer free of charge.

07-15-2009, 05:55 PM	#57
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	The vapor recovery system is why Toyota warns us not to top off. As a long time topper, I've had problems with expanding fuel overflowing as noted above, and leaks developing in filler hoses. Gas on the concrete floor of the garage fills the house with noxious fumes. My sister had her house burned when such fuel soaked into the garage floor was ignited by a hot pan of wood stove ashes her son set on it. I no longer top up the tank. I run it in fast till it clicks off, wait a few seconds for the foam to settle, then start it back slowly till it clicks off once more. (Doesn't take more than 1/10 gallon or so extra.) Gives me a consistent enough point of reference for tracking mileage without risking overfilling problems.