The alphanumeric designation “4xe” signifies a specific type of powertrain technology found in certain vehicles. It denotes a plug-in hybrid electric vehicle (PHEV) system, combining a traditional internal combustion engine with an electric motor and a rechargeable battery pack. For example, a Jeep Wrangler bearing this designation utilizes both a gasoline engine and electric power for propulsion.
This technology provides several advantages, including improved fuel economy, reduced emissions during electric-only operation, and the potential for enhanced off-road performance through the instant torque delivery of the electric motor. The integration of electric power with a combustion engine offers a balance between traditional driving range and the benefits of electrification. Early implementation offered a more sustainable driving experience in vehicles where previously it was unavailable.