Problems · NHTSA complaints
2020 Lexus NX300H problems
Owners filed 6 complaints about the 2020 Lexus NX300H with NHTSA between Jun 2020 and Apr 2021. The most-cited component is visibility/wiper (2).
Complaints
6
Filed with NHTSA
Crashes
0
Reported by owners
Fires
1
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Visibility/wiper2
- Vehicle speed control1
- Forward collision avoidance1
- Engine1
- Other / unknown2
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
5
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2020 | 5 |
| 2021 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Visibility/wiper
2 reports
“ON 11-05-2020 I WAS DRIVING MY NEW LEXUS (3200 MILES ON IT) ABOUT 55 MPH ON A 4 LANE HIGHWAY IN LIGHT TRAFFIC. IT WAS A SUNNY AFTERNOON AND 84 DEGREES. ALL OF A SUDDEN THERE WAS A VERY LOUD EXPLOSION SOUND FROM ABOVE OUR HEADS AND THEN THE SOUND OF GLASS FLYING OFF FROM THE VEHICLE ONTO THE ROADWAY BEHIND US. THERE WAS NO ROAD DEBRIS, FLYING ROCKS OR CEMENT TRUCKS NEARBY THAT MIGHT HAVE CAUSED A ROCK TO FLY UP AND BREAK THE GLASS ON THE SUNROOF. I THOUGHT WE HAD BEEN SHOT AT. I WAS ABLE TO PULL OVER OFF THE HIGHWAY AND GOT OUT TO INSPECT THE DAMAGE. THAT'S WHEN I REALIZED THE SUN ROOF HAD EXPLODED. IT EXPLODED UPWARD AS THE SHARDS OF GLASS INDICATED. THE INTERIOR SUN VISOR PORTION HAD BEEN CLOSED WHEN THIS EXPLOSION TOOK PLACE OTHERWISE MY SELF AND MY PASSENGER WOULD HAVE BEEN SERIOUSLY CUT BY FLYING SHARDS OF GLASS. IT WAS AT THIS POINT I TOOK THE PICTURES THAT I AM ATTACHING TO THIS REPORT. WE IMMEDIATELY CALLED THE LEXUS DEALER AND BROUGHT THE CAR TO THEM ON THE NEXT DAY. AFTER 1 WEEK THEY SAID THE DAMAGE WAS CAUSED BY FLYING DEBRIS BUT DID NOT EXPLAIN HOW THEY CAME TO THIS CONCLUSION. THEY ALSO SAID THIS WASN'T UNDER WARRANTY AND WE HAVE TO PAY $1700 TO…”
Vehicle speed control
1 report
“FEATURE ACC: CONTROLS ACCELERATION AND/OR BRAKING TO MAINTAIN A PRESCRIBED DISTANCE BETWEEN THE VEHICLE AND ANOTHER ONE IN FRONT. MAY BE ABLE TO COME TO A STOP AND CONTINUE. SAFETY ISSUE: THE BRAKE LIGHTS DO NOT COME ON ESPECIALLY WHEN COMING TO A COMPLETE STOP IN TRAFFIC. VEHICLES FOLLOWING MY CAR ARE UNAWARE MY VEHICLE IS COMING TO A COMPLETE STOP, AND MAY REAR END MY VEHICLE. I REPORTED THE ISSUE TO LEXUS TOO.”
Forward collision avoidance
1 report
Engine
1 report1 fire
“TL* THE CONTACT OWNS A 2020 LEXUS NX300. THE CONTACT STATED THAT AT 2:45 AM THERE WAS A LOAD SOUND COMING FROM THE DRIVEWAY WHERE THE VEHICLE WAS PARKED. THE CONTACT THEN DISCOVERED HER VEHICLE WAS ON FIRE NEAR THE FRONT OF THE HOOD. THE TIRE EXPLODED ALONG WITH THE WINDSHIELD FRACTURING. THE CONTACT MENTIONED THAT THE VEHICLE WAS NOT DRIVEN SINCE WEDNESDAY FROM THE INCIDENT DATE ON SATURDAY. THE CONTACT STATED THE FIRE WAS EXTINGUISH BY THE FIRE DEPARTMENT, AND A FIRE DEPARTMENT REPORT WAS FILED. THE INSURANCE COMPANY INSPECTED THE VEHICLE AND STATED THE CAUSE OF THE FIRE WAS UNDETERMINED. THE CONTACT MENTIONED THAT ONLY THE FRAME OF THE VEHICLE REMAINED AFTER THE FIRE WAS EXTINGUISHED. THE CONTACT STATED THE VEHICLE WOULD BE TOWED TO A SALVAGE YARD WHERE AN INVESTIGATOR WAS TO DETERMINE WHAT CAUSED THE FIRE BUT AS OF YET THE VEHICLE WAS NOT DEEMED A TOTAL LOSS. THE CONTACT STATED AN UNKNOWN LOCAL DEALER WAS CONTACTED AND INFORMED CONTACT THERE WAS NO RECALLS ON VEHICLE. THE MANUFACTURER HAD NOT BEEN INFORMED OF FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 3,500.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.