Did the final fill up and here is the tally: 747.9 miles total. Average 45.81mpg. My TPMS light came on early on the trip going over the Cascade Mountains as the temperature dropped due to elevation. Knowing how cantankerous the TPMS system is I looked at all the tires and they looked fine. I checked the pressures this morning after returning and what do you know, 3 tires had 40psi, 1 had 30psi. So I filled it to 40psi and the light went off. So I'm sure that my average would have been better if I didn't drive the whole trip with 1 tire under-inflated 10 psi !
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View my fuel log 2015 Mirage ES 1.2 automatic: 40.5 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.6 mpg (Imp)