Is a 9-speed automatic manual transmission a dual-clutch?

[Amir]

9-speed automatic manual transmission is a wet dual-clutch. The differences between a 7-speed dual-clutch and a 9-speed automatic manual transmission are as follows: Different gear forms: The 7-speed dual-clutch transmission uses a manual gearbox combined with an electronic control computer to simulate automatic transmission operation, while the 9-speed automatic manual transmission is an automatic transmission that uses computer control to simulate manual mode. Different clutch forms: The 7-speed dual-clutch transmission uses wet dual clutch plates that alternately work for gear shifting, while the 9-speed automatic manual transmission uses wet clutch plate sets to control the gear combination operation. Different fuel-saving capabilities: The 7-speed dual-clutch transmission actually uses manual transmission gear sets without power loss, naturally improving fuel economy. In contrast, the 9-speed automatic manual transmission is an automatic transmission where the torque converter still causes engine power loss. Even with the addition of a mechanical lock-up system, it will still increase fuel consumption at low speeds.

[StHarper]

I used to drive a car with a 9-speed automatic transmission, which was actually a traditional automatic, not a dual-clutch. Dual-clutch transmissions are more common in 6-7 speed sports cars, offering lightning-fast shifts but prone to jerking. The 9AT, like those in the Jeep Cherokee or Honda Odyssey, uses a torque converter for smooth shifting, improving highway fuel efficiency and requiring simpler maintenance. If it were a 9-speed dual-clutch, it would likely be in a high-end car like the latest Porsche 911, which is costly and prone to overheating. When buying, test the manual mode response—ATs are slower but more stable. Bottom line: don’t assume—check the manual or ask the dealer to avoid costly mistakes.