I think there is an issue with my truck - Gas Mileage

[eye exaggerate]

Depending on your weather and amount of idling.. ahhh that still seems wacked. I was creeping into the 22-23 L/100 range for a week or so but it was -30 and as low as -37, warming up for 5-8 mins each start and all short <10km city trips. This week has been all above 0 and today +15 and it’s more like 17-18L/100km.
This 5th gen so far to me seems to use more fuel on start ups and idling than my 4th gen.

That’s very much the same conditions here (in the ‘Peg), but yeah, my 14 was a world away from these numbers