The transmission efficiency of the clutch gearbox is about 86% to 92%.
In fact, GM’s 9AT gearbox technology was not achieved overnight. This 9AT gearbox does not apply many new patented technologies. It can be seen that GM’s 9AT is more of its long-term accumulation of technology research and development experience. The resulting product. Compared with extraordinary creativity, stability is the best guarantee.
There are many models equipped with the GM 9AT transmission line, such as Buick Regal and Chevrolet Malibu XL, etc. It is also widely used in these two major American car brands. The most satisfying aspect of the 9AT gearbox is naturally its excellent controllability and passability, and its upshift speed is also relatively ideal.
The smoothness is still very good. From 1st to 9th gear, there is no frustration at all. Moreover, this 9AT gearbox does not sacrifice too much shifting speed for smoothness. From an intuitive perspective, the shifting speed is at the same level as the previous 6AT model. In addition, the lower the speed, the more fuel-efficient it is, because the gearbox will automatically select the appropriate gear according to the engine's output and load conditions to achieve the highest efficiency, thus saving fuel consumption.
GM’s 9AT gearbox not only has an accurate judgment on this distinctive driving style, but can also sense the subtle movements of the feet. For example, when you accelerate with different throttle openings, the gearbox's shifting speed will also be significantly different. The deeper you press the accelerator, the later you shift, the more power you have, the grading is very delicate, and the progression is very good.