The first-generation Karma GS-6 sedan is a plug-in hybrid aimed at drivers who want quiet electric commuting with gasoline backup. This page explains how that powertrain works in daily use.
A Karma GS-6 engine in this generation is part of a plug-in hybrid powertrain, not a conventional gasoline-only setup. The 1.5 AT sedan is one example, pairing that 1.5-liter unit with an automatic transmission and rear-wheel drivetrain you simply put in Drive.
On the 1.5 AT sedan, a lithium-ion pack defines the Karma GS-6 battery capacity you feel day to day: electric running for short trips, then the hybrid system for longer ones. Charge at home when it suits you; public charging is helpful, not mandatory.