"How reliable is the 2005 Infiniti Qx56?"

"Based on 100 NHTSA complaints, the 2005 Infiniti Qx56 has a median complaint mileage of 93000 miles. The most common issue is Service Brakes."

"What are common problems with the 2005 Infiniti Qx56?"

"The most frequently reported component in NHTSA complaints for the 2005 Infiniti Qx56 is Service Brakes, accounting for a significant portion of the 100 total complaints filed."

2005 Infiniti Qx56: Reliability Data

Source: NHTSA — 100 complaints

100

Total Complaints

93,000mi

Median Mileage

Service Brakes

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

50,000 25th Percentile

93,000 Median Mileage

148,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Service Brakes

Fuel/Propulsion System

Fuel System, Gasoline

Electrical System

Air Bags

Exterior Lighting

Power Train

Steering

Service Brakes, Hydraulic

Engine And Engine Cooling

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"INADEQUATE BRAKES ON 2005 QX56. MANUFACTURER IS AWARE OF THIS PROBLEM IN 2004 BUT HAS NOT ISSUED A RECALL TO DATE OR SENT LETTERS TO CUSTOMERS ABOUT THE ISSUE. BRAKES OVERHEAT AND PREMATURELY WEAR OUT AT 2000 TO 2500 MILES CAUSING A VIOLENT SHAKING OF THE STEERING WHEEL AND CONTROL ISSUES. INFIN..."

"THE CAR STEERING WHEEL AND CAR SHAKE VIOLENTLY EVERY 2 TO 3 THOUSAND MILES, AT WHICH TIME THE SERVICE DEPARTMENT AT THE INFINITI DEALERSHIP REPLACES THE BRAKES AND RESURFACES/REPLACES THE ROTORS. THIS IS THE SECOND TIME IT HAS HAPPENED TO US AND THIS IS A MAJOR SAFETY ISSUE. THE STOPPING DISTANCE ..."

"DT: AT APPROXIMATELY 2,000 MILES THERE WAS AN UNCONTROLLABLE SHAKING WHEN APPLYING BRAKE PRESSURE. THIS PROBLEM GOT WORSE. THE CONSUMER TOOK THE VEHICLE TO THE DEALER, WHO NOTED THE NEED FOR NEW ROTORS. THE ROTORS WERE REPLACED AT 2,000 MILES. ABOUT TWO MONTHS LATER, THE PROBLEM RETURNED AND AGA..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Service Brakes 22 complaints

25th: 89,000 mi Median: 107,500 mi 75th: 172,000 mi

Fuel/Propulsion System 12 complaints

25th: 134,500 mi Median: 144,800 mi 75th: 157,000 mi

Fuel System, Gasoline 11 complaints

25th: 61,950 mi Median: 89,979 mi 75th: 110,100 mi

Electrical System 7 complaints

25th: 68,500 mi Median: 109,808 mi 75th: 151,500 mi

Air Bags 5 complaints

25th: 60,000 mi Median: 63,000 mi 75th: 72,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 15 TX: 15 FL: 8 IL: 8 NJ: 6 NY: 6 GA: 5 TN: 5 MO: 4 MD: 4

Who Files Complaints?

12%

Original Owners

88%

Second+ Owners

Infiniti Qx56 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2004	146	88,000	Service Brakes	7
2006	100	95,000	Service Brakes	0
2007	28	85,000	Service Brakes	0
2008	73	92,000	Service Brakes	5
2010	32	75,000	Steering	2
2011	94	90,000	Engine	0
2012	71	85,556	Engine	1
2013	43	99,500	Engine	6

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28