Infiniti QX56 Reliability — Best and Worst Years by the Data

Quick answer

The 2004 draws 4.19 complaints per run and the 2012 1.87, a 2.2-fold gap within the same model. Half of all complaints arrive by 7 years of age, so 84.5% land after the 4-year basic warranty ends. The system owners report most is Service Brakes, with 174 complaints, typically at 7.1 years.

Infiniti QX56 years to avoid — and the best ones

FIG.01·Infiniti QX56 — complaint rate by model year
Model year	Per run	Complaints	Runs	Enough history?
2013	1.88	32	17	yes
2012	1.87	56	30	yes
2011	2	68	34	yes
2010	1.21	23	19	yes
2009	1.75	7	4	yes
2008	2.21	42	19	yes
2007	1.13	18	16	yes
2006	3.09	68	22	yes
2005	3.41	75	22	yes
2004	4.19	88	21	yes

ROWS 10·SOURCE NHTSA complaints, grouped by VIN production run

Does the market discount it? In our listings a 2004 QX56 asks a median $3,995, against $3,995 for a 2005, the next model year: about the same, so the price shows no discount for its complaint record.

Among the 5 Infiniti QX56 years with enough history, the three to walk away from are 2004, 2005, 2006; the three worth hunting are 2012, 2011, 2006.

When it starts to break

FIG.02·Infiniti QX56 — age at failure
Age at failure	Complaints	Running total	Warranty
0 years	31	6.7%	covered
1 year	19	10.8%	covered
2 years	11	13.1%	covered
3 years	11	15.5%	covered
4 years	34	22.8%	you pay
5 years	41	31.7%	you pay
6 years	53	43.1%	you pay
7 years	61	56.3%	you pay
8 years	38	64.4%	you pay
9 years	43	73.7%	you pay
10 years	36	81.5%	you pay
11 years	20	85.8%	you pay
12 years	30	92.2%	you pay
13 years	14	95.3%	you pay
14 years	15	98.5%	you pay
15 years	7	100%	you pay

ROWS 16·SOURCE NHTSA complaints with incident dates

Basic warranty on this car is 4 years / 50,000 miles. Only 15.5% of reported failures happen inside it — the remaining 84.5% come out of the owner's pocket. Powertrain cover (6 years / 70,000 miles) reaches further, but it only covers the engine and transmission, which account for about 19% of the complaints here.

What actually fails — and at what age

On the Infiniti QX56, the early trouble is Hydraulic — reported at around 2.8 years, so a car still under warranty is the one to check for it. What waits further out is Service Brakes at 7.1 years — past every basic warranty, and the bill lands on whoever owns the car then.

FIG.03·Infiniti QX56 — what fails and when
System	Complaints	Typical age	Crash	Fire
Service Brakes	174	7.1 yrs	5	—
Engine	92	7.5 yrs	1	—
Electrical System	54	7.5 yrs	1	2
Hydraulic	50	2.8 yrs	3	—
Fuel/propulsion System	44	8.5 yrs	—	—
Suspension	35	7 yrs	1	1
Air Bags	31	7.2 yrs	3	1
Fuel System	30	6.2 yrs	—	—

ROWS 8·SOURCE NHTSA complaints

What else in this class

6 models share the QX56's vehicle class. Per production run, the Chevrolet Tahoe draws 3.76, the Nissan Xterra 7.88 and the GMC Yukon XL 2.11, against 2.36 for the QX56.

FIG.05·Infiniti QX56 — rivals in the same class
Same class as the QX56	Complaints on record	Recall campaigns	Years built
Chevrolet Tahoe	10,295	169	1995–2026
Nissan Xterra	3,142	64	2000–2015
GMC Yukon XL	4,192	91	1995–2026
Chevrolet Avalanche	2,963	46	2002–2013
Dodge Magnum	1,162	22	2005–2008
Jeep Commander	3,358	24	2006–2010

ROWS 6·SOURCE NHTSA complaints and recall campaigns

The table shows totals on record; the rates per production run are in the sentence above.

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Everything on the Infiniti QX56

Recalls30 campaigns Fuel economy16 mpg best Common problems462 complaints Check a VINAgainst this exact build DimensionsSize, weight, generations Used prices528 listings What yours is worthValue by year & mileage Insurance costEstimated per year Window stickerOriginal Monroney label Decode a VINWhat each character means About this car2003–2013

Frequently asked questions

Is the Infiniti QX56 reliable?

By complaints per production run it is better than typical: 2.36 against 3.73 for the average car, and in the middle of its class rivals.

Which QX56 years should you avoid?

By complaints per production run, 2004, 2005, 2006. The cleanest years old enough to judge are 2012, 2011, 2006. Years newer than 6 are left out: complaints keep arriving for years after a car is sold.

When do QX56 problems usually start?

Half of all complaints arrive by 7 years of age. The most reported system is Service Brakes, typically at 7.1 years, followed by Engine.

Will the warranty cover QX56 problems?

Mostly not: basic cover is 4 years / 50,000 miles, and only 15.5% of reported failures fall inside it. Powertrain cover lasts longer, but engine and transmission make up about 19% of the complaints here.

Is the QX56 more reliable than the Chevrolet Tahoe?

Yes: 2.36 complaints per production run for the QX56 against 3.76 for the Chevrolet Tahoe.

Complaint records from NHTSA, grouped by VIN production run (characters 1–11). Rates, age-at-failure and warranty coverage computed by ForCar. Model years newer than 6 years are excluded from rankings — complaints accumulate for a decade (how we measure). Last updated Nov 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.

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