Most cars won’t make for 3 days. My Volvo S60 which is GDI and normally gets well over 30 mpg has a 70 liter tank that’s 18.5 gallons for you yanks. I have a fulltime Bluetooth OBDII transceiver on the OBDII port it feeds a dedicated tablet on the dash with over 100 metrics in real time with one HZ updates. One of those metrics is fuel burn directly from each injector there are 5 so the software sums them up on a one second basis to give grams per second accurate to the gram quantity. That said I idled after earning the engine up to operating temp with a 5 mile drive around the golf course down the road with the heater on full blast and the blower on high with outside temps last night of 18 degrees F it was holding steady at 0.354 gallons per hour in petrol consumption I also was running my XM radio and had my phone pluged into the charge port. Typical set up for running around. 18.5 gallons would last for just over 52 hours of idling at that consumption rate. During the summer with the AC on high it’s 0.46 gallons per hour to idle and I do idle a lot in it F being hot in Texas summers petrol is cheap compared to across the pond in the USA you pay for a gallon what a liter costs across the pond I will idle all day at those prices.
But many will.
—” One of those metrics is fuel burn directly from each injector”
Thank you!
For answering a question I forgot to ask.
How is the MPG display determined on my wife’s Prius V and many others?
And how is it there can be a variance between the display and miles/gas pumped?
Prius drivers are often maniacal about milage and have records to show.
I fell into this rabbit hole while looking at the difference between “winter gas” and summer gas. ~50 summer/~43 winter; and winter is not a static formulation even for one location.
Thank you!