2025 LEXUS GX — Problems, Recalls & Safety Data

Vehicle experiences a persistent and abrupt harsh downshift (jerk/thud) specifically during 2nd-to-1st gear transitions when rolling to a stop. This issue persists despite the dealership performing the recommended Transmission Control Module (TCM) software update at 5,000 miles. The smooth shifting returned briefly for approximately 500 miles post-update before the abruptness returned. Additionally, there is a noticeable vibration/harmonic change in the engine as the oil reaches approximately 3,000 miles of use. Concerned that this transmission behavior is a secondary symptom of internal engine drag or main bearing stress, as documented in similar V35A-FTS engine failures. This abrupt downshifting creates a safety concern regarding predictable vehicle deceleration in stop-and-go traffic. Vehicle is currently at 6,700 miles.

The car has harsh knocking downshifting. In slow speeds, the has abrupt transmission changes.

The car has harsh knocking downshifting. In slow speeds, the has abrupt transmission changes.

On 10/7/25, the passenger side front tire malfunctioned - I currently have the tire. On 9/7/25, the drivers side rear tire malfunctioned - I no longer have that tire but I have included the receipt for the new tire I had to purchase. On 9/7/25, I was driving alone on the Florida Turnpike at night and in the rain, when the rear drivers side tire blew and was completely destroyed with multiple holes in the sidewall. Fortunately I was able to maintain control of the car, but I was stuck on the side of the highway until a Florida Road Ranger came to assist. The problem was reproduced on the morning of 10/7 when I found my passenger side front tire flat with a split sidewall. I am scheduled to take the car to the Lexus service department on 10/8/25 for inspection. The front passenger tire does not feel like rubber, it can be described as a mix of cardboard and plastic. On the evening of 9/7/25, when the rear drivers side tire blew, there was little warning, the low tire pressure warning light came on and I felt the flat tire in less than one minute. I purchased this new 2025 Lexus GX 550 in March of 2025 from JM Lexus in South Florida and these were the original tires. The car currently has 9,766 miles on it and used for commuting to work and running errands. [XXX] PT5A, 265 /55 R 20. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The driver side mirror shakes around 45 to 50 miles an hour plus. The passenger side mirror at the same speeds stays true and does not vibrate. While I am driving mostly on the highway the driver side mirror shakes or bounces up and down which distorts the images behind me. It is a safety concern where I am getting dizzy while driving. I brought the car back to the dealership Lexus of Pembroke Pines, and they replaced the entire mirror assembly, but it is having the same problem again. The car is not even two weeks old. The constant vibration is a legitimate safety concern and prevents me from safely operating this vehicle.