Made in Germany, unreliable.
SAIC Maxus 9at gearbox is made in Germany, and the gearbox has quality problems. The problems can be summarized as unreasonable gear ratio distribution and questionable reliability of the Dog Clutch.
SAIC Maxus insists on developing 9AT models, especially SUVs. The reason is that the 9AT gearbox has irreplaceable advantages.
SUV models are heavy and have high fuel consumption, so they face greater pressure to reduce fuel consumption. Therefore, 9AT provides more gears so that the engine is always in the economic speed zone. At the same time, the first gear of 9AT generally has a large gear ratio, which helps to improve the acceleration performance of heavy SUVs.
GM 9AT has optimized the gear ratio distribution and shift mechanism based on the Hydra-Matic transmission family and corresponding patented technology within the group. The corresponding technology is guaranteed by mature cases and long-term verification, and its performance and reliability are worth looking forward to.