What is an ETSI engine?
Cars labeled as eTSI are equipped with a mild-hybrid drivetrain. This means that the vehicle is powered by a traditional internal combustion engine, which is assisted by an electric motor. TSI vehicles are not capable of running solely on electric power. The eTSI with mild hybrid technology is a significant new feature. A starter-alternator provides extra assistance for the engine when starting off and at low speeds. The lithium-ion batteries are charged under braking and while coasting. This achieves a significant reduction in fuel consumption and emissions.