Auto Meter 9100 ECO Meter Compatible with most gasoline ODBII equipped vehicles from 2008 to present Includes 5ft. Wiring Harness with 1 wire installation which easily plugs into OBDII port Displays RPM, Speed, Instant MPG, and Average MPG. Installs in minutes! Ecometer's ecograph helps you improve your driving habits to increase your fuel efficiency and reduce your fuel costs.