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  1. Mileage Meters: Where Do They Get Their Info?

    Audio/Video & Navigation
    I just bought a new 2012 Civic LX. I am curious as to how the mileage is calculated. Does it measure the fuel flow through the injector? The fuel pump? A super-accurate gas tank level? And what about the instant mileage? It looks an awful lot like the vacuum-gauge economy meters from the 80s...