Cut to the chase:
56 mpg US / 4.2 L/100 km for its first fuel log entry.
Boo. Stupid fuel hog. I want my money back!
It's the 2nd best fill I've had in a Mirage. (The best was 60 MPG US for the SMCC economy run back in 2014). But it's still somewhat underwhelming, eh?
The tank included 350 km of freeway driving the car back from Toronto, plus a bit of Toronto city driving, all of which dragged down the average. And mostly un-modded (PSI, partial grille block, passenger mirror delete) for much of the tank.
I've had some more promising round trips lately:
^ That one was on a trip I do often in the summer, where I'd normally see a high-70 MPG result in the Metro or Firefly. Considering ambient temps were around freezing, not terrible! But it was a pretty hardcore drive (slow average speed, tons of EOC).
Here's a more "normal" drive from last weekend:
That one was even colder: -10 C (14 F) start, -5 C by mid-day. Mostly a back road/scenic route journey with little other traffic, flat-ish terrain, 80 km/h = 50 mph limit. Dry conditions, light wind @ ~10 km/h.
Driving with load was the main technique used, with an average cruising speed around the limit (OK, probably a little bit under, especially before the drivetrain warmed up) .
Stupid fuel hog needs moar mods! Especially a coolant heater.