CVT transmission power mainly depend on the rubber belt between the two ratchet or metal band pass, and function as a bicycle chain. From therubber belt with steel to alloy metal with a ratchet to optimize the design, CVT gearbox can withstand the torque becomes more and more, before being gradually overcome the high torque CVT can not afford the weaknesses and make the increasingly wide range. CVT has a wide range of matching is to emphasize low-speed torque output of the SUV models, the SUV models to reverse the image of the tiger oil has laid a good foundation. In addition, CVT gearbox maintenance costs as technology development and significantly reduce the reliability of the upgrade to Nissan's X-tronic CVT transmission, for example, can achieve life-long maintenance-free, not only in economy, in support vehicle costs are also a lot of cost savings for consumers.