All 3 in One Automabile Computer, which combined with auto trouble code scanner, trip computer and digital gauges (include XGauge). It will be a good car performance monitor to your car performance and be a monitor that you can check your real time and av. fuel economy. The ScanGauge Plus can suit for almost all OBD2 cars on-road, include Gas, Diesel, Propane and Hybrid cars. SCAN TOOL The ScanGauge Plus allows you to troubleshoot your own car, read error codes, and the conditions present when the error occurred. You can also turn off the "Check Engine" light and avoid those costly trips to the mechanic. -- Reads Trouble Codes -- Reads conditions that set the Trouble Code -- Clears Trouble Codes -- Turns off the "Check Engine" light -- Tells you when vehicle is "Ready" to pass OBDII testing -- Make and store up to 10 rewritable special codes to send to the vehicle computer Trip Computer Automatically tracks four sets of trip data - Each with 11 individually stored parameters. -- Maximum Speed -- Average Speed -- Maximum Coolant Temperature -- Maximum RPM -- Driving Time -- Driving Distance -- Fuel Used -- Trip Fuel Economy -- Distance to Empty -- Time to Empty -- Fuel to Empty Digital Gauges Display 4 gauges at a time from the 12 built-in digital gauges. The information is presented in Real-time! -- Fuel Economy -- Fuel Rate -- Battery Voltage -- Coolant Temperature -- Intake Air Temperature -- Engine Speed (RPM) -- Vehicle speed (MPH) -- Manifold Pressure (not available on some vehicles) -- Engine Load -- Throttle Position -- Ignition Timing -- Open/Closed Loop