I had a chart listing the KPH and the equivilant MPH. Pain in the butt. Purhased a SCAN GAUGE and mounted it above the inside mirror. Set it to show MPH, RPM, Water Temp, and miles per gallon. I completely ignore the factory speedo and rely on the SCAN GAUGE. There is a slight delay in displaying the correct information but it is something that I can live with.
Oh yes, it is nice to be able to see the miles per gallon reading between 65 and 75 when on the freeways. DIESEL POWERED 2005 Passion coupe!!!!!!