Transmission is jerky, choking and doesn't react for 3-4 seconds. I took it to the dealer and they reset a transmission code without replacing my transmission with a new one.

- Plano, TX, USA

The contact owns a 2017 Acura MDX. While driving approximately 75 mph on a busy interstate highway, the vehicle suddenly failed to accelerate when the accelerator pedal was depressed. In addition, the electric parking brake, blind spot, and "stop driving" messages and indicators illuminated. The vehicle was towed to mapleton palm beach Acura (6870 okeechobee blvd, West palm beach, fl 33411), but the failure could not be duplicated. The dealer performed a software update on the vehicle. The manufacturer was not notified of the failure. The failure mileage was 35,649.

- North Palm Beach, FL, USA

The transmission shifts hard and rough, slips in and out of gear and on two separate occasions (both being on the freeway) the transmission got stuck and would not respond at all and I sat in the car coasting as if the car was in neutral while on the highway. I have taken the car in to Acura 6 times and have received no help at all. I have contacted Acura corporate and still received no help. I'm highly concerned for myself and my families safety. This is now my daily driver and the transmission is only getting worst over time. In regular city street driving, braking is scary because the transmission accelerates before it slows down and the car shifts down slowly so by the time I actually stop the car, the car is still shifting down. The car jerks when I press on the gas or when I break to stop. I'm afraid an accident is going to happen if I have to slam on the breaks to avoid a collision because the transmission can't decide which gear to shift into. Acceleration is a big problem as well. If I'm at a complete stop and press the gas to go the car lags and then jolts into gear and then jolts again into the next gear. I paid a lot of money for this car and I do not feel safe driving it at all I'm trully scared I'm going to be injured or maybe worst.

- Fresno, CA, USA

When pulling forward from a stop into a car wash, the zf 9-speed transmission dropped into neutral without warning, causing the vehicle to lose all ability to move forward. When this happened, all warning lights on the dash illuminated, including stability control, airbags, check engine, lane departure, and frontal collision system, and the digital display flashed through every component on the car saying there were system failures in them all. The immediate remedy was to stop, place the vehicle in park and shut off the engine. When re-started the vehicle was able to be driven, but all system failure lights and warning lights on the dash and digital display remained illuminated.

- Daphne, AL, USA

We have experienced many issues with our 2017 MDX sh-AWD. On a cold start when shifting from first to second gear there is a sudden lurch hard shift. Once warm this is still present but not as pronounced. The transmission seems to slip through gears and have sudden downshifts that decelerate the car or the vehicle will lurch forward without having your foot on the gas as it shifts itself into a different gear. When trying to 'punch it' and accelerate quickly it will often hesitate to go into the correct gear then suddenly rev high as it speeds up. Hunting up and down through gears while staying at a constant speed. The navigation system is extremely slow to come up and respond to inputs when the car is started. Acura has claimed this is due to cell phone bluetooth interference. Collision mitigation system has engaged twice. The first time by husband was in a parkinglot driving through a row looking for a spot to park. The car slammed on the breaks with no cars in his path and nearly caused the car behind him to rear end him. The second time I was approaching a stop light to turn right, there was a vehichle in front of me but the distance I was stoping from the rear of that vehichle was not an abnormal or alarming distance. The brakes locked up with lights flashing on the dash and an awful grinding noise coming from beneath the car. On one occasion from a parked position it would not allow us to engage it in drive. It flashed "shift to park" on the dash. It took three attempts to get it to go in to drive. The rear hatch hydrolics had to be replaced within the first 6 months as the power liftgate stopped working. One of the two key fobs also went out on us in the first 6 months, replacing the battery did nothing and the whole fob needed to be replaced.

- Lincoln, CA, USA

The 9 speed transmission in my Acura MDX shifts very hard going into first and second gear while driving on city streets and in two separate cases the car did not shift into third gear and halted the car as I step on the gas the engine roars but the car did not move. Once it finally shifted into gear the car jolted forward. This happened in the rain which was extremely scary and unsafe. I have taken the car to two Acura dealers totaling 4 visits to the service department and no one believes that anything is wrong because Acura is not doing anything about it. A lot of other customers online reviews explain the same issue I'm having. I have contacted Acura corporate office and was assured within two business days a manager would contact me regarding this matter and that was three weeks ago and I have heard nothing from them. I do not feel safe in this car or having my family in the car at this point.

- Fresno, CA, USA

I believe the 9-speed transmission in the 2017 MDX presents serious safety issues. One of my major concerns is the significant "lurching" I get when parking on a slope, shifting to "park" and then taking my foot off the brake. On snow or ice, the car could easily slide some distance. I similar lurching also frequently occurs when shifting into drive or reverse when on a slope and then starting to accelerate. My second major concern is that when I downshift on a down-slope in lieu of braking, the car actually first speeds significantly up after downshifting and does not slow down as it should. I do a significant amount of driving in mountains where down-shifting is safer than braking and this is a major safety issue. Lastly, the car hesitates at times when accelerating from a stop. I have taken the car back to the dealer at least twice and am told that these issues are just the characteristics of the car.

- Shawnee Mission, KS, USA

On February 23,2018, I purchase a new 2017 Acura MDX with technology package. The vehicle had 378 miles when I purchased it. It had never been titled and was sold as a new vehicle. Upon taking delivery of the vehicle, I noticed that the vehicle hesitates when shifting gears. When stopped at a traffic light on a flat paved, city street, the vehicle experiences poor acceleration when taking off. I am pressing the gas pedal down really hard, yet the vehicle is moving very slowly--not equal to the amount of pressure I am applying to the gas pedal. The acceleration is very poor, especially when pulling off from a stopped position. When I am going downhill on a paved city street, the vehicle accelerates even when no gas is applied. Experiencing rough shifting, especially in low gears on all paved roads. Dangerous when trying to merge onto the highway due to extremely slow acceleration. Sometimes when slowing down to stop, the vehicle accelerates. When I try to make a left turn against oncoming traffic, the vehicle hesitates and could cause a serious accident. All driving takes places on city streets, highways and paved roadways. On one occasion, the vehicle would not shift into reverse from a parked position. I received an error code saying 'transmission problem, pull over when safe." The poor acceleration problem is worse when I enable the adaptive cruise control and lane keeping assist features. I have returned the vehicle to the dealership on 2 separate occasions. Each time they tell me the vehicle is operating as designed. They even said that I need to drive the vehicle more so that the transmission will learn my driving patterns and make the necessary adjustments.

- Ellicott City, MD, USA

The van started running rough and started jerking. The gears were not shifting well and got an error message P0730. It was very unsafe and we were lucky not to have been driving on freeway. Huge safety issue.

- Redondo Beach, CA, USA

We own a 2017 Acura MDX, my wife was driving the SUV attempting to park when the vehicle briefly accelerated. I was driving the SUV at low speed when it briefly accelerated, I was kind of stunned, and asked did you feel that, she said yes, and then stated I guess I wasn't imaging it when it happened to me, these were separate issues at different times and dates. The vehicle was brought in for service and this issue was mentioned, the service writer explained that Acura is aware of this and it's an intermittent issue and Acura has no fix, it was asked why Acura hasn't warned owners of the potential problem and the service writer explained it's a intermittent issue that hasn't been replicated in service and doesn't happen to all the vehicles. We asked doesn't someone think it's a safety issue, that when I was driving in laconia nh bike week it could have accelerated into a motorcycle or pedestrian. There was no response other than please rate us good on the service call what we did not what Acura isn't doing"???????"

- Nashua, NH, USA