The contact owns a 2016 Acura MDX. The contact stated that on several occasions while driving at various speeds, the vehicle downshifted inadvertently. The vehicle was towed to a dealer where the failure was not able to be replicated. The contact stated that on one occasion while attempting to place the gear in any gear other than reverse (R) the gear selector indicator displayed the gear selected but the vehicle did not operate as intended. The manufacturer was notified of the failure. The failure mileage was approximately 70,000.