The 1990 draws 2.25 complaints per run and the 1997 1, a 2.2-fold gap within the same model. Half of all complaints arrive by 5 years of age, so 74.4% land after the 4-year basic warranty ends. The system owners report most is Power Train, with 24 complaints, typically at 6.6 years.
Infiniti Q45 years to avoid — and the best ones
| Model year | Per run | Complaints | Runs | Enough history? |
|---|---|---|---|---|
| 2005 | 4 | 3 | yes | |
| 2004 | 5 | 3 | yes | |
| 2003 | 10 | 6 | yes | |
| 2002 | 18 | 9 | yes | |
| 2001 | 3 | 3 | yes | |
| 2000 | 9 | 5 | yes | |
| 1999 | 6 | 5 | yes | |
| 1998 | 12 | 7 | yes | |
| 1997 | 8 | 8 | yes | |
| 1995 | 4 | 4 | yes | |
| 1994 | 19 | 10 | yes | |
| 1992 | 20 | 10 | yes | |
| 1991 | 22 | 13 | yes | |
| 1990 | 18 | 8 | yes |
Among the 7 Infiniti Q45 years with enough history, the three to walk away from are 1990, 1992, 2002; the three worth hunting are 1997, 1991, 1998.
When it starts to break
| Age at failure | Complaints | Running total | Warranty |
|---|---|---|---|
| 0 years | 8% | covered | |
| 1 year | 13.6% | covered | |
| 2 years | 22.4% | covered | |
| 3 years | 25.6% | covered | |
| 4 years | 36% | you pay | |
| 5 years | 50.4% | you pay | |
| 6 years | 64.8% | you pay | |
| 7 years | 76.8% | you pay | |
| 8 years | 80.8% | you pay | |
| 9 years | 83.2% | you pay | |
| 10 years | 85.6% | you pay | |
| 11 years | 89.6% | you pay | |
| 12 years | 92% | you pay | |
| 13 years | 96% | you pay | |
| 14 years | 98.4% | you pay | |
| 15 years | 100% | you pay |
Basic warranty on this car is 4 years / 50,000 miles. Only 25.6% of reported failures happen inside it — the remaining 74.4% 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 24% of the complaints here.
What actually fails — and at what age
On the Infiniti Q45, the early trouble is Suspension — reported at around 4 years, so a car still under warranty is the one to check for it. What waits further out is Power Train at 6.6 years — past every basic warranty, and the bill lands on whoever owns the car then.
| System | Complaints | Typical age | Crash | Fire |
|---|---|---|---|---|
| Power Train | 6.6 yrs | 1 | — | |
| Electrical System | 6.2 yrs | 1 | 4 | |
| Engine And Engine Cooling | 6 yrs | 1 | — | |
| Air Bags | 4.8 yrs | 8 | — | |
| Fuel System | 7.2 yrs | — | — | |
| Gasoline | 7.2 yrs | — | — | |
| Suspension | 4 yrs | 2 | — | |
| Vehicle Speed Control | 4.9 yrs | 3 | — |
What else in this class
6 models share the Q45's vehicle class. Per production run, the Toyota Camry draws 5.65, the Honda Accord 4.02 and the Dodge Challenger 3.27, against 1.69 for the Q45. That is the fewest complaints of the group.
| Same class as the Q45 | 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 Q45 reliable?
By complaints per production run it is better than typical: 1.69 against 3.73 for the average car, and fewer than each of the 3 class rivals we compared.
Which Q45 years should you avoid?
By complaints per production run, 1990, 1992, 2002. The cleanest years old enough to judge are 1997, 1991, 1998. Years newer than 6 are left out: complaints keep arriving for years after a car is sold.
When do Q45 problems usually start?
Half of all complaints arrive by 5 years of age. The most reported system is Power Train, typically at 6.6 years, followed by Electrical System.
Will the warranty cover Q45 problems?
Mostly not: basic cover is 4 years / 50,000 miles, and only 25.6% of reported failures fall inside it. Powertrain cover lasts longer, but engine and transmission make up about 24% of the complaints here.
Is the Q45 more reliable than the Toyota Camry?
Yes: 1.69 complaints per production run for the Q45 against 5.65 for the Toyota Camry.
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