Honda Passport transmission issues causing slow down during normal driving on Honda Passport

Some Honda Passport owners report experiencing transmission issues that cause a slowdown during normal driving, including shifting problems and delayed acceleration with the 9-speed transmissions in 2019-2022 models. Additionally, vibrations while driving at highway speeds have been reported, which may indicate transmission-related problems. Some owners have encountered slow acceleration due to failed O-rings causing leaks, while others notice a slow response when shifting from Park to Drive or Reverse, as well as unusual thumping during downshifting on cruise control. It is recommended that owners facing these issues have their transmission systems thoroughly inspected by a qualified mechanic to diagnose and resolve any potential problems.