Problems · NHTSA complaints

2005 Infiniti QX56 problems

Owners filed 80 complaints about the 2005 Infiniti QX56 with NHTSA between Apr 2005 and Nov 2024. The most-cited component is service brakes (22).

Complaints
80
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
6
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Service brakes22
  2. Fuel/propulsion system12
  3. Fuel system, gasoline11
  4. Service brakes, hydraulic9
  5. Electrical system7
  6. Exterior lighting5
  7. Air bags5
  8. Power train5
  9. Steering4
  10. Fuel system, other3
  11. Engine and engine cooling3
  12. Engine2
  13. Suspension2
  14. Service brakes, electric2

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 Oct 29, 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
20053
20061
20073
20081
20090
20107
20116
20127
20137
201413
20155
20167
20177
20183
20195
20202
20211
20221
20230
20241

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

Service brakes

22 reports
“I started to break saw a major traffic jam . And my steering started shaking and my breaks did not Stop like they're supposed to.almost was i huge crash w I th my [XXX] and [XXX] old”
Owner complaint to NHTSAFiled Nov 14, 2024Steering, Service brakesODI 11625120

Fuel/propulsion system

12 reports
“FUEL GAUGE SHOWS 1/4 TANK BUT IT IS EMPTY. THIS CAUSED THE VEHICLE TO STALL ON THE HIGHWAY. VERY DANGEROUS SITUATION COULD HAVE OCCURRED. WAS ABLE TO FIND SAFETY BESIDE THE HIGHWAY BUT THANKFUL IT DID NOT HAPPEN IN THE MIDDLE OF A BUSY HIGHWAY.”
Owner complaint to NHTSAFiled Jun 1, 2019Fuel/propulsion systemODI 11217317

Fuel system, gasoline

11 reports
“TL* THE CONTACT OWNS A 2005 INFINITI QX56. WHILE DRIVING AT 65 MPH, THE VEHICLE SHUT OFF DUE TO LOW FUEL. THE CONTACT MENTIONED THAT THE LOW FUEL WARNING LIGHT FAILED TO ILLUMINATE. THE VEHICLE WAS REFUELED AND THE VEHICLE FUNCTIONED AS NORMAL. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 148,000. UPDATED 6/22/15*CN”
Owner complaint to NHTSAFiled May 7, 2015Fuel system, gasoline, Electrical systemODI 10715192

Service brakes, hydraulic

9 reports
“VEHICLE WAS PURCHASED USED IN DECEMBER 2009. STARTED NOTICING BRAKE SQUEALING & GRINDING, FRONT & REAR BRAKES HAD TO BE REPLACED IN FEBRUARY 2012. AFTER BRAKES WERE REPLACED THERE WAS AN INCIDENT BACKING OUT OF A DRIVEWAY WHILE BRAKING, HAD ONLY 20% BRAKES WITH LOUD GRINDING NOISE, BUT NO WARNING LIGHTS CAME ON. DECIDED TO REPLACE ROTORS AFTER THAT INCIDENT IN MARCH 2012. ON APRIL 9TH WHILE LEAVING A GROCERY STORE PARKING LOT GOING APPROX.15MPH, EMERGENCY BRAKE LIKE CAME ON, 95% OF BRAKES WERE LOST, LOUD GRINDING NOISE WHEN TRYING TO BRAKE. CAR PUT INTO PARK & TURNED OFF. WHEN TRUCK WAS TURNED BACK ON & BRAKE PEDAL DEPRESSED WHILE IN PARK POSITION, BRAKES SEEMED NORMAL AGAIN. PUT TRUCK INTO DRIVE & SECONDS LATER THE EMERGENCY BRAKE LIGHT CAME BACK ON & 95% OF BRAKING SYSTEM WAS LOST AGAIN WITH LOUD GRINDING NOISE. COASTED VEHICLE HOME (LESS THAN 1/4 MILE). HAD VEHICLE TOWED TO INFINITI DEALER WHO IS RECOMMENDING REPLACING THE BRAKE BOOSTER SYSTEM AT A COST OF $1,100. AFTER MUCH RESEARCH ON THIS ISSUE, REPLACING THE BRAKE BOOSTER SYSTEM SOUNDS LIKE A TEMPORARY FIX. WITH A FAMILY OF 7, THIS IS OUR MAIN FAMILY VEHICLE & KNOWING THIS COULD REOCCUR AT ANY MOMENT…”
Owner complaint to NHTSAFiled Apr 12, 2012Service brakes, hydraulicODI 10454922

Electrical system

7 reports
“THE VEHICLE WILL LOSE POWER TO THE BRAKES WHILE DRIVING INTERMITTENTLY. WHEN PROBLEM OCCURS YOU WILL LOSE POWER STEERING AND PRESSURE TO BRAKING SYSTEM. ALSO THE DRIVER HID HEADLAMP GETS MOISTURE IN IT WHENEVER IT RAINS. I HAVE HAD TO REPLACE THE HID BULB ABOUT 6 TIMES IN THE PAST YEAR. ALSO THERE SEEMS TO BE AN ELECTRICAL ISSUE WITH THE ONBOARD COMPUTER THAT CAUSES THE TACHOMETER TO NOT WORK OR READ CORRECTLY.”
Owner complaint to NHTSAFiled Jan 4, 2021Steering, Electrical system, Service brakesODI 11386367

Exterior lighting

5 reports
“WHILE DRIVING IN RESIDENTIAL/BUSINESS AREA MY VEHICLE COMPLETELY LOST POWER AND TURNED OFF. I DRIFTED TO THE SIDE OF THE ROAD WITHOUT POWER STEERING. TRIED TO START VEHICLE AGAIN. VEHICLE WOULD START BUT WOULD IMMEDIATELY DIE-WOULD NOT IDLE. AFTER RESTING APPROX 5 MINUTES I WAS ABLE TO START AGAIN AND CONTINUE HOME. THIS HAS HAPPENED 3 TIMES IN THE PAST 2 MONTHS. I AM TERRIFIED TO DRIVE THIS VEHICLE AGAIN. I ALSO CANNOT KEEP THE DRIVERS SIDE HEADLIGHT WORKING. BULBS CONSTANTLY BLOW OUT AT OVER 300.00 DOLLARS EACH. *TR”
Owner complaint to NHTSAFiled Jun 26, 2020Electrical system, Exterior lighting, EngineODI 11331118
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 29, 2026

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