2024 Lexus Tx

I am reporting a severe, systemic vehicle performance discrepancy on my Lexus TX 500h (2.4L Turbo Hybrid powertrain). The vehicle is officially labeled with an EPA rating of 27 MPG combined. However, under normal, conservative driving conditions, the vehicle routinely achieves only 20 to 21 MPG—a consistent 20%+ shortfall from the manufacturer's certified window sticker metrics. This has drastically limited the vehicle's safe total driving range to under 300 miles per tank. The shortfall persists despite cautious driving in Eco Mode and after passing the engine break-in period. This issue matches a widespread pattern reported by numerous other owners in consumer forums, pointing to a potential defect in the vehicle’s fuel management software or hybrid battery management logic. I request that NHTSA log this tracking data to investigate whether the manufacturer misrepresented the vehicle's real-world operational capabilities or fuel-system integration.

Starting in drive with the brakes depressed, when trying to accelerate with the gas pedal, the vehicle will not activate the engine from electric mode(EV). The car will not accelerate even with the gas pedal fully depressed. It has happened four times so far. Safety issue because when I’m pulling out into traffic to make a left or right turn, the car will not accelerate and therefore can get hit by oncoming traffic, especially when I am trying to merge into a lane with oncoming traffic. The car crawls and will not accelerate. My car is a hybrid vehicle. It almost feels as if the non electric engine doesn’t kick on when it is supposed to. The car will crawl for about 5-10 seconds before the engines engages and kicks on the acceleration. There are no warning lights or indication that anything is malfunctioning when this happens. I have not taken the vehicle in to the dealer yet.

I am a loyal Lexus owner since 1998 and have always recommended Lexus vehicles to my family and friends. In over 25 years of ownership, I have never experienced an issue like this. While driving under normal road conditions, my new 2024 RX 350’s AC condenser was punctured by small road debris, causing a refrigerant leak and loss of air conditioning. The condenser is located directly behind the front bumper, leaving it exposed to minor debris, which I believe is a design vulnerability. Damage at such low mileage suggests this may affect other vehicles of this model. Reduced AC performance could impact driver comfort and visibility in extreme heat, and operating the system with low refrigerant may cause further mechanical damage. I am submitting this complaint to request that NHTSA review this as a potential design defect affecting multiple vehicles. I have also contacted Lexus for warranty repair.

The vehicle's lower front fascia exhibits a design flaw, creating an unsafe gap that permits road debris to impact the condenser, leading to air conditioning system damage. This compromise in the A/C system's functionality results in an inability to adequately cool the vehicle's interior, thereby creating potentially unsafe operating conditions, particularly in high-temperature environments. It has been observed that dealerships are declining warranty coverage for these repairs, and the manufacturer has not provided any countermeasures to address this inherent design deficiency.