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What 17 owners told NHTSA about the 2021 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 (17)Crash / fire / injury (3)Visibility & wipers (4)Engine (3)Fuel system (3)Brakes (2)Electrical system (2)Tires (2)Airbags (1)Body & structure (1)Driver assistance (1)Lane Departure (1)

4 of 17 complaints match · Visibility & wipers · clear filters

Oct 25, 2024Visibility & wipers

The contact owns a 2021 Lexus NX300. The contact stated that while the vehicle was parked, his father heard the car alarm sounding off. The contact went to inspect the vehicle and saw that sunroof glass had shattered. The contact stated that he reviewed the home security footage and observed that the sunroof glass had not been impacted by an object for the sunroof glass to shatter. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 37,718.

NHTSA ODI 11621943

Oct 10, 2024Visibility & wipers

The left-hand side outer rear-view mirror vibrates while driving causing safety hazard as it is difficult to clearly see cars behind, or potentially passing while the glass is shaking; yes it is risky; the Lexus dealer in Frederick CO has confirmed the problem. There is currently a warning for other years with the same problem; this is a 2021 NX 300

NHTSA ODI 11619198

Aug 3, 2024Visibility & wipers

As I was driving, , I suddenly heard a very loud noise. I didn’t know what it was till I was going to turn to look at the side view mirror of any cars or pedestrians passing. Then only I realized it was my right view mirror that suddenly blew up.. I was lucky that it didn’t blew up in crosswalk where people were standing or waiting to cross because the fragments could have hit anyone..

NHTSA ODI 11606265

Oct 13, 2021Visibility & wipers

Driver side mirror shakes when traveling on highway, making it difficult to see other vehicles clearly in blindspots. Manufacture closed case saying they called the dealership and my mirror doesn't shake any more than other models. Dealership confirmed most of the nx300 mirrors side view mirrors shake on the highway. Toyota has fixed their rav 4 mirrors, Lexus doesn't have a fix, and doesn't seem interested in finding one. The faster you go over 55 mph the more the side mirror shakes. The jiggle is about half an inch of movement, and a vibrating mirror makes it difficult to tell the difference between cars and other objects .

NHTSA ODI 11436587

Working with the data? Download all 17 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 2021 Lexus Nx300 verdict →