Half of all complaints arrive by 7 years of age, so 81.2% land after the 4-year basic warranty ends. The system owners report most is Power Train, with 7 complaints, typically at 7.7 years.
Infiniti M56 years to avoid — and the best ones
| Model year | Per run | Complaints | Runs | Enough history? |
|---|---|---|---|---|
| 2012 | 3 | 3 | yes | |
| 2011 | 11 | 9 | yes |
Among the 2 Infiniti M56 years with enough history, the three to walk away from are 2011, 2012; the three worth hunting are 2012, 2011.
When it starts to break
| Age at failure | Complaints | Running total | Warranty |
|---|---|---|---|
| 2 years | 12.5% | covered | |
| 3 years | 18.8% | covered | |
| 4 years | 25% | you pay | |
| 6 years | 37.5% | you pay | |
| 7 years | 50% | you pay | |
| 8 years | 75% | you pay | |
| 10 years | 93.8% | you pay | |
| 12 years | 100% | you pay |
Basic warranty on this car is 4 years / 50,000 miles. Only 18.8% of reported failures happen inside it — the remaining 81.2% 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 75% of the complaints here.
What actually fails — and at what age
On the Infiniti M56, the early trouble is Seat Belts — reported at around 2 years, so a car still under warranty is the one to check for it. What waits further out is Power Train at 7.7 years — past every basic warranty, and the bill lands on whoever owns the car then.
| System | Complaints | Typical age | Crash | Fire |
|---|---|---|---|---|
| Power Train | 7.7 yrs | — | — | |
| Engine | 6.8 yrs | — | — | |
| Electrical System | 5 yrs | — | — | |
| Fuel/propulsion System | 8.7 yrs | — | — | |
| Air Bags | 7 yrs | — | — | |
| Steering | 6.5 yrs | — | — | |
| Unknown Or Other | 5 yrs | — | — | |
| Seat Belts | 2 yrs | — | — |
What else in this class
6 models share the M56's vehicle class.
| Same class as the M56 | Complaints on record | Recall campaigns | Years built |
|---|---|---|---|
| Toyota Camry | 161 | 1983–2026 | |
| Honda Accord | 415 | 1981–2026 | |
| Dodge Challenger | 77 | 1981–2026 | |
| Toyota Prius | 109 | 2001–2026 | |
| Hyundai Elantra | 117 | 1992–2026 | |
| Nissan Altima | 148 | 1993–2026 |
The table shows totals on record; the rates per production run are in the sentence above.
Good year or bad year — the VIN settles it.
- Check any VIN against complaints for its exact build year and plant
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Frequently asked questions
Is the Infiniti M56 reliable?
By complaints per production run it is better than typical: 1.23 against 3.73 for the average car.
When do M56 problems usually start?
Half of all complaints arrive by 7 years of age. The most reported system is Power Train, typically at 7.7 years, followed by Engine.
Will the warranty cover M56 problems?
Mostly not: basic cover is 4 years / 50,000 miles, and only 18.8% of reported failures fall inside it. Powertrain cover lasts longer, but engine and transmission make up about 75% of the complaints here.
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