First Tank

Did you fill the tank yourself? The dealers can fill it till it looks full - at least on the gauge, giving a false reading. I've never had a new car give a reliable reading with the first tank, I always fill up as soon as I can. Remember TOYOTA recommends filling only to the first click.

 

I hope you have a gas can in your trunk.

 

Yeah, no kidding: what is wrong with this picture:



As Spock would say, it is "illogical", conflating good fuel economy with how many miles per tank.

 

I just had my first full week with the new car, Prius Two. I drive about 70 miles a day during the week and I still only used just over half a tank (5.768 of 11.3). I had a T-Mobile Tuesday discount code that expired on Friday so I filled up on the way home and saw 64.8MPG. Even if I average 60MPG, that's a significant improvement over the 50MPG I saw with my 2012 Prius C. For me possibly being able to fill up close to once every 2 weeks would be pretty sweet.

 

congrats, well done!

 

Eventually you will get to know how many actual miles you can go on a full tank before you go empty.

 

On my Gen 2 Prius, when the reserve light starts blinking you have 3 gallons left in the tank 40 miles per gallon gives you plenty of time to get to a gas station. Yes I only averaged about 40 to 45 because of where I live. Lots of high-speed Highway.

Posted via the PriusChat mobile app.

 

I have driven 75 miles beyond "0" DTE. YMMV!

 

From what I gather, it assumes that you've filled the tank at some stage - I assume from the fuel gauge. With my previous 2 cars with computer logging, it doesn't seem to differentiate between whether you've stopped at the first click, or brimmed it - or if the pump has clicked off only 3/4 full (or you just put $20 in). At some stage it seems to assume it's full.

There must be sensors for fuel use - whether it's fuel flow, or based on load, or by some other means, I'm not sure. No matter which car, it seems to be 5-10% optimistic, but that's pretty close for what it is doing. I mean it can't be certain whether you've filled it completely - but does fairly well regardless. Being a hybrid will have added another level of complexity - my previous 2 Diesels were always using the ICE, but the hybrid is using a combination of ICE, EV & hybrid drive.

Go with the flow - the vast majority of my fills, the dashboard reading has been near enough - the one or 2 which were wildly out, I think I could guess why (improper fill).

 

Some people have managed to run out with no damage.

Newer cars are likely to be more sympathetic, though that's not a given. But their fuel tanks should be relatively clean.

But I can vividly recall when my daughter ran out in an older car, co$t me a fuel pump, fuel line flu$h, 2 fuel filter$ (or wa$ it 3?) and a tow!! And a taxi to collect the car. Oh, and loan her my car for the week to go to University.

Some early injected cars had to have injector system bled when they ran out of fuel. I won't risk it.