All things considered, making a RAV4 Hybrid probably wasn't a very difficult thing to do. They have the right powertrains already and have even made a dedicated RAV4 EV with Tesla.
Although Toyota doesn't yet have any hybrid competition from the Honda CR-V and Volkswagen Tiguan, that's likely to change soon. The Tiguan II is coming out within a year and should adopt the GTE plug-in system used by the Golf, since the two are based on the same platform. As for Honda, they've just added a more efficient twin-turbo 1.5-liter diesel in Europe.
We've been told by Toyota dealers that this new RAV4 Hybrid model will also be sold in Europe and Asia. The powertrain is likely to consist of a 2.5-liter four-cylinder engine paired with an electric motor.. The combined output will come to around 200 horsepower and it's routed to the wheels through a specially designed continuously variable transmission (CVT).