Maruti Suzuki plans to expand its hybrid range with strong hybrid powertrains for mass-market vehicles.Upcoming Maruti strong hybrid cars include Grand Vitara, Fronx, Baleno, Swift, Brezza, and a compact MPV.The 7-seater Maruti Grand Vitara will share platform, powertrains, and design with its 5-seater sibling.Maruti Suzuki's strong hybrid cars are expected to offer high fuel efficiency of around 35kmpl - 40kmpl.