The forthcoming Prius will be constructed on a new C platform, good for a 70-kilogram (153-pound) reduction in weight. The car's current 1.8-liter engine will be modified, and the electric motor and power inverter will be downsized. But, according to the Auto Express source, it will deliver more power. It will also be more fuel efficient – which we kind of assumed – however, the source is claiming 90 miles per gallon fuel economy (on the UK cycle, we imagine, so something closer to 75 mpg here). If true, that's definitely impressive.
While the standard Prius will get these drivetrain changes, the plug-in version will remain largely the same. That said, both models will receive an electric motor that drives the rear wheels, as part of an e-4WD system. According to the source, Toyota would be, "targeting snowy areas" and said that the rear wheels will be driven at speeds "up to 37 mph." Interestingly enough, Toyota will stick with nickel-metal hydride battery for the Prius, with lithium-ion fitted for the plug-in model.
All of this new drivetrain technology is set to come with a change in design philosophy for the Prius. The wedge shape synonymous with the Prius will be ditched in favor of a sleeker design, moving the A-pillar backwards. This design is not supposed to effect aerodynamics or overall functionality.
It's hard to argue with the success of the Prius in its current design and drivetrain layout, but with many new hybrids nipping at the heels of the Prius' dominance, it seems like a good a time as any for Toyota to raise the bar once again for environmentally conscious driving.