Topic: Real-world fuel consumption

[Great_Big_Abyss]

50L tank so I usually fill around 600 km. On long trips my bladder says stop anyway and at home, I usually don't leave with less than a 1/4 of a tank as most of my driving is on the highway and need to drive 100 km minimum.

Toyota likes to turn on the "fill light" very early and I've had the DTE hit zero even with 8L of fuel left which is easily another 100 km under normal conditions. When the car was still somewhat new, I went 30 km past zero (DTE) just to see how much fuel was left in the tank which confirmed, the light comes on very early. Clearly Toyota likes to place it very safe. My GTI when it said zero (DTE) you better be able to see a gas station within blocks.

But the theoretical distance with leaving 5L in the tank is 750 km @ 6 L/100 or 820 @ 5.5 L/100. Unless my math is wrong.

I calculated once with the Tundra that when the gas light came on I had 40L of fuel left.  So a Civic's worth of fuel.  Or 30kms in the Tundra, lol.

[quadzilla]

50L tank so I usually fill around 600 km. On long trips my bladder says stop anyway and at home, I usually don't leave with less than a 1/4 of a tank as most of my driving is on the highway and need to drive 100 km minimum.

Toyota likes to turn on the "fill light" very early and I've had the DTE hit zero even with 8L of fuel left which is easily another 100 km under normal conditions. When the car was still somewhat new, I went 30 km past zero (DTE) just to see how much fuel was left in the tank which confirmed, the light comes on very early. Clearly Toyota likes to place it very safe. My GTI when it said zero (DTE) you better be able to see a gas station within blocks.

But the theoretical distance with leaving 5L in the tank is 750 km @ 6 L/100 or 820 @ 5.5 L/100. Unless my math is wrong.

I calculated once with the Tundra that when the gas light came on I had 40L of fuel left.  So a Civic's worth of fuel.  Or 30kms in the Tundra, lol.

That is both funny and crazy early. How big was the tank? Maybe it was to ease the cost at fill-up (temporally of course).

[Great_Big_Abyss]

143 liters

[Seafoam]

 ^^ That 's more than  3 Civic tanks. My 23 Civic has  a 47 liter tank.

[marcus_go]

^^ That 's more than  3 Civic tanks. My 23 Civic has  a 47 liter tank.

Yeah, big tank for sure. At Vancouver prices an almost empty tank would be over $250 to fill. 

[Bubba]

Last local tank on the Corolla.

Both the car and Scanguage said 7.8 L/100km.  However, the calculated consumption was 8.3 L/100km.

 

Most recent tank: the same discrepancy.
Car 9.6  Scanguage 9.5
Calculated 10.3

[HeliDriver]

Last local tank on the Corolla.

Both the car and Scanguage said 7.8 L/100km.  However, the calculated consumption was 8.3 L/100km.

 

Most recent tank: the same discrepancy.
Car 9.6  Scanguage 9.5
Calculated 10.3

I’ve never used a Scangauge, but every car I’ve owned has had a discrepancy between the display and what I’ve calculated by hand.

https://www.caranddriver.com/news/a15369613/why-your-trip-computer-isnt-giving-accurate-mpg-readings-and-how-to-fix-it/

[dkaz]

Scan Gauge like Ultra Gauge uses MAF readings to calculate fuel usage which is usually accurate, but it doesn't take into account the different energy content of the fuel itself through the different seasons. So if your Scan Gauge is calibrated for summer fuel, it's going to under-calculate winter fuel usage.

[Bubba]

Scan Gauge like Ultra Gauge uses MAF readings to calculate fuel usage which is usually accurate, but it doesn't take into account the different energy content of the fuel itself through the different seasons. So if your Scan Gauge is calibrated for summer fuel, it's going to under-calculate winter fuel usage.

That's what I'm thinking.  I won't make any changes to my Scanguage or my fuel up procedure.

[quadzilla]

There can be too many variables with the pumping/hand calculating that I just stick to the car's display.

I ran the car DTE down to 58 km and was able to pump 37.355L which means there was still 12.6L of fuel left in the tank. Just shows how early Toyota likes to warn its drivers.

[tortoise]

I adjusted the Golf's MFD to read 7% higher, making it dead on with hand calcs.

[bridgecity]

For a long time I thought the capacity of my Tundra's fuel tank was 80L, as that's about the maximum I could get into it when range approaches zero.  The maximum I've ever put in is 84L and the range was shown as zero.  The listed capacity is actually 99L.  The displayed range is quite conservative.  I've only hand calculated a few tanks, and its ranged from being bang on to about 1L/100km off optimistically. 

[Seafoam]

 There is also the another variable with the calculations. You are supposed to set the scanguage according to the speedometer setting. You do this usually by GPS. Most people assume the speedometer error is the same for the odometer as well. It is not always the case.
I have found the same as Dkaz with the seasonal variations in fuel.

[quadzilla]

I've only hand calculated a few tanks, and its ranged from being bang on to about 1L/100km off optimistically.

Isn't 1L/100 considered a rounding error with a Tundra. 

[bridgecity]

I've only hand calculated a few tanks, and its ranged from being bang on to about 1L/100km off optimistically.

Isn't 1L/100 considered a rounding error with a Tundra. 

Ha ha, pretty much. 

[quadzilla]

Port Dover (ON) to Charlotte (NC) 1,200 km

Started off on snow covered highways until close to Buffalo, then cold and wet until heading south away from the lake. Rain and fog through WV and then temps didn't ride until over the Blue Ridge Mountains. Windy the entire drive.

6.2 L/100 with the roof box, cruise set at 115 kph (once away from the snow/ice) and multiple bursts to 130 kph not to clog up the passing lane. Many transport trucks were going 120-130 kph, same with most other cars/trucks. 

[WP v3.32]

First tank with the Ram.   Averaged 11.6L/100km which I am really happy with, basically 1L more than my old hybrid. 121L Tank so the range shows about 1050km.  If I didn't go skiing yesterday I would have lasted 3 weeks on a fill-up.   

I can probably get it lower in the summer as I use the remote start all the time.

[ktm525]

First tank with the Ram.   Averaged 11.6L/100km which I am really happy with, basically 1L more than my old hybrid. 121L Tank so the range shows about 1050km.  If I didn't go skiing yesterday I would have lasted 3 weeks on a fill-up.   

I can probably get it lower in the summer as I use the remote start all the time.

That's better than a gen1 Ridgeline I can tell you that. Owner may have a heavy foot though.

[bridgecity]

First tank with the Ram.   Averaged 11.6L/100km which I am really happy with, basically 1L more than my old hybrid. 121L Tank so the range shows about 1050km.  If I didn't go skiing yesterday I would have lasted 3 weeks on a fill-up.   

I can probably get it lower in the summer as I use the remote start all the time.

That's better than a gen1 Ridgeline I can tell you that. Owner may have a heavy foot though.

In order to get 11.6 in my Tundra it would have to be perfect highway driving conditions cruising at 100km/h. 

[WP v3.32]

I do drive currently drive like a grampa.  I don't how low it will last until I start tailgating people and buy stickers for my political views.   God help me.