Vehicle electronic apparatus and vehicle diagnostic apparatus, namely, electronic devices for performing vehicle diagnostics, monitoring, displaying and data logging of vehicle data; vehicle electronic devices for communicating with motor vehicles, namely, electronic devices that communicate by wired and wireless methods to a vehicle through the vehicle's diagnostic ports and through direct connections to vehicle diagnostic and electronic control modules; vehicle status and operational monitoring devices, namely, electronic devices for performing vehicle diagnostics, monitoring, displaying and data logging of vehicle data; computer hardware and software for vehicle communications, namely, an electronic diagnostic device enabled to communicate with vehicle diagnostic and electronic control modules and for monitoring, displaying and data logging of vehicle data; electronic devices for monitoring vehicle operation, displaying vehicle data, and adjusting vehicle performance and efficiency; vehicle communications hardware and software for monitoring, diagnostics, displaying, and data logging of vehicle operations data, for vehicle operations diagnostics, and for changing vehicle operational performance and efficiency; computer hardware and software for controlling and interfacing with vehicle on-board diagnostics tools and systems