2005 Infiniti QX56 Engine Problems
- Complaints
- 2about this part
- Share
- 3%of 80 total for the year
- Median mileage
- 200,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2005 Infiniti QX56, 3% of the 80 complaints for this model year. Where a mileage was given, the median is 200,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.”
NHTSA complaint #11331118, filed 2020-06, 270,000 miles“The contact owns a 2005 Infiniti QX56. While traveling 60 MPH, the vehicle stalled without warning. The vehicle was merged to the side of the road, where it was restarted. The contact also indicated that upon restarting the vehicle, it would not go over a speed of 40 MPH. The vehicle was taken to an authorized dealer for further inspection and diagnosis. The contact was not included in NHTSA campaign id number: 10v517000 (engine and engine cooling). The manufacturer was notified of the failure. The approximate failure mileage was 130,000.”
NHTSA complaint #10732088, filed 2015-07, 130,000 milesRelated service bulletins
- 10152503Nov 28, 2018OBD II EVAP Tube Warranty Enhancement The update below was sent out to Regions and Retailers in August of this year. We are re-circulating this update to make regional and…
- 10192427Aug 21, 2014IF YOU CONFRIM An oil leak at the right side block ball plug behind the alternator. ACTION: Use a punch to seat the block ball plug in the hole (refer to the Service Procedure)…
Engine: other model years
Other parts of the 2005 Infiniti QX56
34 complaintsFuel system
25 complaintsElectrical system
7 complaintsAir bags
5 complaintsExterior lighting
5 complaintsTransmission and drivetrain
5 complaintsSteering
4 complaintsEngine cooling
3 complaintsEquipment
2 complaintsOther or unknown
2 complaintsSuspension
2 complaintsLatches, locks and linkages
1 complaints
← All problems reported for the 2005 Infiniti QX56
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology