I'll find out if she's a liar for sure in a couple more hours.

1st tank of gas, the little digital readout on the dash said I got 21.1 mpg. Wow!!! Then I crunched the math myself. 18.6 WTF

So I reset everything and I'm down to 1/4 tank and I'll be checkin again today. Think she's sittin on 21.2 right now. I'm cool with 18 and a half, but I don't appreciate being lied to