Engine and Transmission The S90 will also offer a clean and powerful T8 Twin Engine plug-in-hybrid engine which aims to deliver high efficiency and responsiveness as well as providing a first-class driving experience. PowerPulse technology has also been launched within the S90. This innovative system delivers instant turbo response in diesel engines offering a distinct performance feel that cannot be achieved in other diesel variants. Volvo is currently the only brand currently using this technology in production cars giving the S90 even more edge. An eight-speed transmission is available in the new S90 and allows the engine’s torque and power band to be utilised more efficiently, while the six-speed manual gearbox also on offer will provide smooth gear changes and high fuel efficiency. The all-wheel drive option of the Volvo S90 has a very practical type of four-wheel drive system.Thanks to its compact and lightweight abilities the S90 is able to allocate the engine’s power between the front and rear wheels.Not stopping there, the clever system continually computes the need for torque to the rear wheels and can instantaneously redistribute up to half of the engines torque to the rear wheels if required.