Yaris Verso 1.3 VVTi - data source of dashboard fuel consumption display?

[Bluevitz-rs]

Originally Posted by bronsin

I ll take a stab at this one. I think they go by manifold pressure. I might be wrong. In any case in my experience the only accurate way to measure mpg is when you fill the tank.

Manifold pressure can only be measured on cars with a MAP (Manifold Absolute Pressure) sensor. All modern toyota engine use a MAF (Mass Air Flow)