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Glossary

EV – Electric vehicle. A broad term for any kind of plug-in electric vehicle.

PHEV – Plug-in hybrid electric vehicle. A vehicle that contains both an internal combustion engine as well as an electric motor which can be charged by plugging into an outlet.

BEV – Battery-electric vehicle. A purely electric powered vehicle.

OBD port – The on-board diagnostics port. A standardized connection to the vehicle’s diagnostics system.

C2 Device – FleetCarma’s on-board diagnostics (OBD) device. A device that collects data and provides EV owners with information including their personalized driving and charging dashboards through the SmartCharge Rewards portal.

Tesla Diagnostic Connector – A proprietary connection to Tesla’s vehicle diagnostics system. Using FleetCarma technology, the Tesla Diagnostics Connector is the gateway to providing Tesla owners with access to their vehicle’s data including their personalized driving and charging dashboards through the SmartCharge Rewards portal.

Fuel Efficiency Equivalent, MPGeq, or MPGe – Miles Per Gallon Equivalent. A measure of how far a vehicle can travel electrically on the same amount of energy as contained in 1 gallon of gasoline.

Electric Driving Efficiency, Wh/mile – Watt-hours per mile. A measure of fuel efficiency for battery electric vehicles.

kWh – Kilowatt-hours. A measure of charging energy used.

GHG – Greenhouse gases. Carbon dioxide and other gases emitted due to the consumption of fossil fuels by a vehicle. Can be emitted either through the direct usage of gasoline in a combustion engine, or fossil fuels used to drive electricity generation which powers an electric vehicle’s battery.

Vehicle GHG Rate (g/mi) – A measure of greenhouse gas emissions per mile.

Vehicle GHG Savings (lb) – Comparing your vehicle’s CO2eq per mile to a typical passenger vehicle as defined by the EPA:
A typical passenger vehicle emits about 4.7 metric tons of carbon dioxide per year.
This assumes the average gasoline vehicle on the road today has a fuel economy of about 21.6 miles per gallon and drives around 11,400 miles per year. Every gallon of gasoline burned creates about 8,887 grams of CO2.

SOC – State of Charge. This is reported as a percent of total useable battery capacity.

Battery Health – A quantifiable score indicating your electric vehicle’s battery degradation with respect to storage and power capacity. Reported as a percent, with 100% representing a new battery.

Electric Distance Fraction (%) – The percent of driving distance which is done using the electric battery as opposed to the gasoline engine in a plug-in hybrid electric vehicle.

Auxiliary Load (kWh) – The total energy used by the vehicle’s auxiliary systems (heating, radio, etc.) which is not used to move the vehicle.
Ambient Temperature (­°F) – The average temperature outside the vehicle while driving.

Smooth Acceleration (%) – The percentage of acceleration events during a trip which were done smoothly enough to avoid significant negative fuel efficiency impacts.

Smooth Braking (%) – The percentage of braking events during a trip which were done smoothly enough to avoid significant negative fuel efficiency impacts.

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