There have been a number of logging devices in the market that connect to a vehicle’s OBDII port. All cars have a OBDII port connector (at least in the USA and Canada) , including the Model S and Model X. Most loggers do not work with EVs as the data tends to be quite different. Data loggers we are aware of that work specifically with the Model S:
- MyCarma – Works via Bluetooth to display logged data to your phone and save the data to the internet. Saves information for each trip, including miles, energy used, starting and ending SOC (State of Charge), etc. (Appears to have been discontinued in February 2019).