This is going to be a data logging App. It'll be able to connect with a car (through a Bluetooth dongle) and send all the necessary commands to the onboard control units to communicate with it and extract information in real-time. This information will be Simplified and displayed over the App in a predefined format. Some of the Apps similar to this (For example- carista, Torque pro etc.) are already available on the play store....you can check them out.
5 freelancers are bidding on average ₹61300 for this job
I have experience with Bluetooth modules and Bluetooth api on Android. Very good knowing of user interface in android and I have 5 years experince with linux and embedded systems.