Problems · NHTSA complaints

2010 Lexus RX450H Hybrid problems

Owners filed 98 complaints about the 2010 Lexus RX450H Hybrid with NHTSA between Jul 2009 and Sep 2026. The most-cited component is engine (26).

Complaints
98
Filed with NHTSA
Crashes
13
Reported by owners
Fires
1
Reported by owners
Injuries
7
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine26
  2. Vehicle speed control12
  3. Electrical system11
  4. Steering10
  5. Service brakes10
  6. Fuel/propulsion system9
  7. Service brakes, hydraulic9
  8. Air bags5
  9. Engine and engine cooling5
  10. Structure4
  11. Power train4
  12. Suspension3
  13. Electronic stability control (esc)3
  14. Forward collision avoidance2

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 7, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20094
201012
201110
20122
20132
20144
20152
20161
20173
20186
20198
202010
202110
20225
20236
20243
20255
20265

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.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

26 reports1 fire
“We had a known oil line ruptured the oil cooler, there was a serviceable and sit out to the dealers to only repair if it was leaking and they extended it to 10 years $150,000 miles our vehicle had a rupture at 170,000 miles we were never told about the recall or we would have it done earlier we now have sparkles in our oil this is the part that it doesn't leak it ruptures I'm sure all out could place a fire and it certainly is can cause catastrophic damage to the engine 1500 to repair”
Owner complaint to NHTSAFiled Sep 30, 2026EngineODI 11767950

Vehicle speed control

12 reports3 crashes
“The contact called on behalf of her son who owns a 2010 Lexus RX350. The contact stated that she had taken her son's vehicle to the car wash. The contact stated while at a complete stop, in the carwash drive-through, the vehicle accelerated independently and the driver's side of the vehicle crashed into the wall on the left side of the carwash bay. Heavy metal structures fell on the vehicle. As a result, the windshield was shattered and the ceiling of the vehicle was bent. The air bags failed to deploy. There was no warning light illuminated. The contact sustained two large contusions below the knee of her left leg. The injured area later became swollen and bruised. The contact sought medical assistance. A police report was filed. The vehicle was towed to a tow yard. The vehicle was then towed to the contact's residence. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 12V305000 (Vehicle Speed Control). The manufacturer was notified of the failure and informed the contact that they would send a field inspector to retrieve the Event Date Recorder (EDR) in order to determine the cause of the failure. A case was…”
Owner complaint to NHTSAFiled Dec 15, 2022Vehicle speed controlCrash reportedODI 11497560

Electrical system

11 reports
“Odometer Fraud. The contact purchased a 2010 Lexus RX 350. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 139,000. It was discovered that the mileage was 177,000 in 2022. The contact contacted the Police, and the contact was advised to file a civil suit.”
Owner complaint to NHTSAFiled Jul 29, 2026Electrical systemODI 11753462

Steering

10 reports
“When parked and turning the steering wheel or driving at low speed you hear a clunk / clunck noise vehicle makes knocking noises as it jumps up and down (bumpy) or vibrates when driving You can also feel it in your hands. Also it rattles and makes noises when turning. It feels like there is no lubrication. The drive feels not only unstable but also is very distractive while driving. Took car to Lexus and was told it is steering column or shaft or both; quote around $4000 with labor. Seems like a lot of people had same problems and the steering is manufacturing defect that should be recalled as a safety concern.”
Owner complaint to NHTSAFiled Mar 24, 2024SteeringODI 11579120

Service brakes

10 reports3 crashes
“Abs actuator failure causing wheels to lock up in wet conditions along with loss of control..I nearly crashed into pedestrians when it failed. suddenly check abs light came on along with abs system malfunction...I could've been killed or killed someone. lexus will not cover the repair though they did for customers under 50k miles and under warranty which is completely criminal. Any lexus of Toyota highlander with abs assembly part # 44510-48080 needs to be recalled and replaced at Toyota and lexus immediately. They want $4000 to fix the system knowing they sold a critical safety part that malfunctions.”
Owner complaint to NHTSAFiled Mar 27, 2023Service brakesODI 11514042

Fuel/propulsion system

9 reports
“I was looking at common problems associated with the make and model of my car. I came across an issue that could possibly cause engine failure. I am unsure if any one has reported it yet. here are the details - Problem overview An VVT-i oil line on the Lexus RX350 is known to burst. This is a very large leak which covers the ground, engine, and undercarriage. If the oil line ruptures while driving, the low engine oil message and engine oil pressure warnings will illuminate. Continued use after these warnings will result in complete engine failure due to oil starvation. The line is known to be defective, and a revised part has been issued by Toyota, however, this revised part is known for the same issue. To repair the issue, the line must be replaced, and the engine bay and undercarriage must be cleaned thoroughly. The problem has occured generally around 120k miles. Here is the link to the website that has collected information from 116 users. Requesting you to please check if this a problem that needs a recall? [XXX] ely report it.”
Owner complaint to NHTSAFiled Apr 29, 2026Engine, Fuel/propulsion systemODI 11734624
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.