I am writing to report a concerning issue with my Acura RDX 2017, which I believe poses a significant safety risk and requires immediate attention from your organization. The problem I encountered while driving jeopardizes the safety of both myself and others on the road. About five days ago, while driving at approximately 20 mph, my vehicle began emitting loud, thunderous sounds, accompanied by intense vibrations that shook the entire car. Additionally, it seemed to struggle when shifting gears, particularly into second or third gear. Despite my careful and gradual acceleration, the car exhibited signs of a malfunction within its transmission system. Furthermore, at around 35 mph, the engine suddenly revved to over 3000 rpm, causing the vehicle to accelerate without any input from me. This acceleration occurred even though my foot was not on the gas pedal, making the car difficult to control and putting me at risk of colliding with other vehicles or objects. The unpredictability of these incidents is deeply alarming and could lead to serious accidents if not addressed promptly. I purchased this vehicle in December 2023 and have maintained it according to the manufacturer's recommendations. However, when I inquired about the timing belt at the dealership, I was assured that it had passed inspection. Despite this, the recent malfunctions suggest a more serious underlying issue that needs immediate attention. Crucially, there were no warning lights, messages, or other indications of a problem prior to these incidents, underscoring the sudden and unexpected nature of the issue. I urge the NHTSA to investigate this matter urgently and thoroughly. I request that you initiate a recall of affected vehicles and implement necessary repairs to address the identified defects. Swift action is essential to ensure the safety of all motorists who may be affected by this issue.

- Kansas City, MO, USA

The contact owns a 2017 Acura Rdx. The contact stated while driving 45 mph, the vehicle failed to accelerate and loss motive power. The vehicle coasted to a stop. The vehicle was restarted and operated as designed for less than one minute before the failure recurred. The contact took the vehicle to schaller Acura (345 center St, manchester, ct 06040, (860) 647-7077) who were unable to identify the cause of the failure. The contact stated the failure reoccurred at 35-40 mph. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 37,800.

- Bristol, CT, USA

The contact owns a 2017 Acura Rdx. The contact stated that while depressing the accelerator pedal, the vehicle hesitated to accelerate. In addition, the vehicle accelerated abruptly on several occasions. The contact that on several occasions while driving, the vehicle stalled without warning. The contact stated that the vehicle restarted independently. The vehicle was taken to key Acura of gainesville (3435 N main St, gainesville, fl 32609) on three separate occasions however, the mechanic was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 22,000.

- Greensboro, GA, USA

During morning commute on highway multiple warning lights came on, including electronic stability control, emissions, lane departure, and power steering. On rapid acceleration vehicle had pronounced power loss, which obviously could be dangerous. This is the second time this very thing has happened to the vehicle. It's at least the 4th time multiple warning lights have come on, and the second for the loss of power on acceleration. The dealership consulted Acura technical support the last time and said they had identified and fixed the problem.

- Zionsville, IN, USA

I was driving on a highway with the automatic cruise control (acc) enabled and set at 68 mph. Without touching the pedal or controls, the cruise speed setting suddenly jumped to 90 mph and my car rapidly accelerated to reach that speed. Fortunately, there was no one in front of me and I was able to take control of the car and disable cruise control.

- Austin, TX, USA

The contact owns a 2017 Acura Rdx. While reversing out of the driveway, the vehicle inadvertently accelerated. The contact had to quickly shift the vehicle into park and apply extreme pressure to the brake pedal to stop the vehicle. The contact stated that the failure occurred numerous times. On one occasion, while driving on the highway, the vehicle inadvertently accelerated and a green light with the word "main" was displayed. The vehicle was towed to chapman Acura (4600 E 22nd St, tucson, AZ 85711, (520) 445-4061), but they were unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 20,000. Consumer stated brakes did not work, car only stopped when consumer ran over curb- up a hill and hit some boulders 1 have never used cruise control - car would not stop in reverse or going forward repair damages $1,105.62. Happened again in 6/17/18 updated 9/26/18

- Tucson, AZ, USA

9,249 miles on a 2017 Acura Rdx. Check engine light came on while in motion on a highway at approximately 65 mph with notable loss of power (once stopped it took a full 30 seconds to get to 15 mph). Let car sit for 2 hours as manual stated. Once restarted and driven for approximately 20 feet all lights on dashboard where flashing and again virtually no power. Vehicle was towed to the dealership. Tech performed hds scan and retrieved error codes: P0304, P0 05, and P0306...4/5/6. dealership claims was all due to needing a software update. Of which I never would have been aware of unless I experienced this scary loss of power on the highway. They had no sort of alert out that the new models are in need of a software update. Dangerous and do not feel safe driving this car any longer.

- Drexel Hill, PA, USA