At launch, the most powerful Tucson is the hybrid 1.6-liter T-GDi HEV, which combines the turbocharged petrol engine with a 59 hp (60 PS; 44 kW) electric motor and a 1.49 kWh lithium-ion polymer battery for a system output of 226 hp (229 PS; 169 kW). The hybrid Tucson will be offered with a 6-speed automatic and optional all-wheel-drive drivetrain. A plug-in hybrid variant based on the 1.6-liter T-GDI petrol with a combined output of 261 hp (265 PS; 195 kW) will be introduced in 2021.[53]