A GPS-GSM based Tracking and Monitoring System with OBD-II ( Onboard Vehicle Diagnostics standards II ) interface, which adds remote diagnostics capabilities to our existing GPS Vehicle tracking platform. Along with vehicle tracking data, other vehicle-related parameters, and diagnostic information like Error codes, Real-time speed, RPM, Fuel level, Real-Time Odometer can be acquired through the OBD-II interface and sent to the server through GSM/GPRS for Processing. With the OBD-II interface becoming standardized with all the vehicle manufacturers, this solution opens up an opportunity to offer a wide range of services & applications to users and huge business opportunities within an automobile ecosystem.