that one would be pointless forme cause itonly goes up to 25

my old acura had an average fuel economy and a realtime fuel economy, it was useful at least for fidnignt hemost fuel efficient speed

I had a New Yorker that had the digital mpg guage. The game was to pop it in neutral and see how long you could keep it at 99mpg while coasting.

I don't have one in my car?

Anyways I wonder if it does work off vaccum? All you really need is the flowrate of the fuel which can be approximated by the injector pulse width and the speed from the vehicle speed sensor.

My friends 80 something BMW 635CSI has a stock MPG guage as well...it'* interesting watching that thing move around throughout the RPM range.

I think the 2000+ have them, is what Gumball meant.