Got my worst fuel economy last week

[jb48]

Got the 3 big fuel killers last week: mail delivery (194 mail boxes each day), cold temp (-30 to - 18 C) and many inches of snow on slippery road sides.
So yesterday I filled up 34 l (8.9 us gallons) for 368.9 km (229.2 miles), which give 9.22 l/100km, or 25.75 mpg, worst result since I got my still beloved 2008 Yaris at the end of late September. My alltime best is 6.1 l/100 (38.2 mpg).
For the record, my 2007 2wd Ford Ranger (3 l engine) pickup managed 19 l/100 (12.33 mpg), with 400 lbs of sand bags in the bed, for the same job and conditions. So, on a positive note, I still double the FE of my previous wheels...and traction in deep snow is much better with the Yaris than with the ballasted 2 wd pickup.