On my 12 mile commute, my first 4 miles are at a 35mpg average , which increases to maybe 42mpg at 8 miles, and by the end, 46mpg right now if there's no regen going on. When I was extending my commute to 16 miles, I was cracking 50mpg. This is when my car isn't actively regenning
For my commute journey then, my first 4 miles uses 0.11 gallons or 0.51L, the next 4 uses 0.079 gallons or 0.36L, the last 4 uses 0.071 gallons or 0.32L. On those terms, the commute extension's further 4 miles uses 0.059 gallons or 0.27L.
If we consider the car at it's top efficiency in the 13-16 mile stint (there will be room for a little improvement, but not much) then at that point then for those 4 miles the car is doing 67.8mpg.
Those first 4miles (33% of the journey) use 58% of the fuel on a whole 8 mile journey, or 42% of the fuel used on my whole 12 mile commute. Those first 4 miles have the water temp up to 90C and the oil temp possibly just touching 50C.
The first 8 miles (67% of the journey) use 73% of the fuel on my whole 12 mile commute. At 8 miles, my oil temp is at or near 90C. At 12 miles my oil temp is at whatever temp it wants for passive regenning - anywhere from 90C to 98C.
Seems to me then that if you're doing 15+ miles on your average journey then you're laughing, and any less than that will see you shaking your head in disbelief at the pumps to a varying extent. That's before the active regens kick in that I see for 40-50 miles every 250 miles which turn a 46mpg commute into a 41mpg commute.
Does anyone else's car warm up any quicker than mine, or do you see similar temps at similar phases into your journey?
