As an impressively refined and sophisticated package, one of the noteworthy features that we like about the Lexus 500h tested on page 68 of this issue is the incorporation of a six-speed torque-converter automatic transmission within this vehicle’s hybrid powertrain. In other derivatives, including the 350h, Lexus has defaulted to the use of a continuously variable transmission (CVT), a popular transmission solution among many other brands from the Far East, including Honda, Mitsubishi, Subaru and, more recently, Chery. Some of the reasons for the broadly negative press linked with CVTs include the so-called ‘rubber-band effect’ that it has on straightline performance, as well as the audible drone associated with hard acceleration. So, why does it remain so popular?
A BRIEF HISTORY OF THE CVT
From a refinement point of view,…