Home · 2018 Lexus Nx300 · Complaints

What 21 owners told NHTSA about the 2018 Lexus Nx300

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (21)Crash / fire / injury (2)Fuel system (10)Engine (4)Brakes (3)Body & structure (2)Speed control (2)Steering (2)Visibility & wipers (2)Airbags (1)Driver assistance (1)Electrical system (1)

2 of 21 complaints match · Speed control · clear filters

Jun 10, 2025SteeringSpeed controlFuel system

In June 2022, the vehicle exhibited abnormal engine behavior, specifically fluctuating revolutions per minute (RPM), while at a complete stop, creating a risk of engine stall. Newport Beach Lexus dealership opted to replace the fuel injectors and gaskets as a corrective measure. Previous invoices also show that there were concerns related to fuel equipment prior to this incident. Subsequently, in December 2024, while traveling with my child on [XXX] near Barstow, California, the vehicle experienced severe shaking during an ascent, leading to a temporary loss of power while driving. I continued to drive after a brief respite due to the unsafe, remote location in the desert. Upon arrival in Las Vegas, the vehicle was inspected by a Lexus dealership, and they were unable to identify the issue at that time. In January 2025, the vehicle’s check engine light came on and further inspections at Lexus South County revealed that the vehicle was unsafe to operate without replacing the fuel pump. The dealership indicated that the vehicle would not be released unless this repair was completed and the fuel pump was replaced. The National Highway Traffic Safety Administration (NHTSA) identified a safety recall (NHTSA Campaign ID 20V682000) for these vehicles due to a defect in the low-pressure fuel pump. The defect could lead to engine stalling, increasing the risk of a crash. Affected vehicles were equipped with a fuel pump that may fail, causing the engine to stall while driving. Toyota and Lexus dealers were instructed to replace the fuel pump assembly with an improved one at no cost to the vehicle owner. These events suggest a potential failure to adequately address a known safety defect, leading to compromised vehicle performance and increased risk to occupants. Failure to add this vehicle to the recall list created an ongoing unsafe situation for my family and also compromised the health of the vehicles’ engine and other parts that rely on the fuel pump. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11666186

Nov 12, 2018Speed control

UNINTENTIONAL ACCELERATION HAPPENED WITH THIS NEW 2018 NX AS WELL AS MY OLD 2015 NX200T AS WELL. IT HAPPENED ONCE SO FAR TO EACH. ONLY ACCELERATED ABOUT 3-4 MPH, AS I WAS ONLY GOING ABOUT 5 MPH GOING INTO AN EMPTY PARKING LOT. WHEN IT HAPPENED TWO YEARS AGO IN MY 2015, I THOUGHT MAYBE IT WAS A ONE TIME THING BUT NOW KNOW IT IS A REAL ISSUE! I GOT FLASHLIGHT TO CHECK IF COULD HAVE BEEN MY FLOORMAT INTERFEREING WITH MY ACCELERATOR PEDAL BUT NOTHING EVEN NEAR IT BOTH TIMES! AS SOON AS I HIT THE BRAKE, IT STOPPED ACCELERATING AND CAME TO A STOP BOTH TIMES.

NHTSA ODI 11150998

Working with the data? Download all 21 complaints as CSV · fetched from NHTSA July 20, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 Lexus Nx300 verdict →