What breaks most · 2007 to 2015 model years
Infiniti G37 problems by year
Owners have filed 304 safety complaints with NHTSA about the Infiniti G37 across model years 2007 to 2015. One year stands out: 2009 for air bags complaints. The quietest years are 2007, 2012 and 2011.
- Years to check closely: 2009
- Fewest complaints: 2007, 2012, 2011
- Complaints on file
- 3042007 to 2015, all trims
- Worst year
- 2009102 complaints
- Crashes reported
- 271 fires · 9 injuries · 0 deaths
- Typical failure mileage
- 45kMedian where owners gave mileage
- Recall campaigns
- 3Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 1 | 0 | 0 | Fuel system (1) | |
| 52 | 2 | 1 | Air bags (13) | |
| 102 | 4 | 0 | Air bags (46) | |
| 46 | 6 | 0 | Air bags (16) | |
| 45 | 7 | 1 | Air bags (14) | |
| 27 | 3 | 1 | Air bags (12) | |
| 30 | 5 | 0 | Air bags (14) | |
| 1 | 0 | 0 | Exterior lighting (1) |
What fails on the 2009 Infiniti G37
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Air bags | 45% |
46 | 2 | Check recalls for air bags on NHTSA.gov |
| Powertrain and transmissionTransmission parts | 13% |
13 | 1 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| Unknown or other | 12% |
12 | 0 | — |
| EngineEngine gaskets and seals | 11% |
11 | 0 | Shop engine parts for the 2009 Infiniti G37 |
| Electrical systemAlternators, starters and ignition | 9% |
9 | 0 | Shop electrical system parts for the 2009 Infiniti G37 |
| Speed control and throttleThrottle and pedal sensors | 7% |
7 | 1 | Shop speed control and throttle parts for the 2009 Infiniti G37 |
| Seats | 6% |
6 | 0 | — |
| Brakes (hydraulic)Brake pads, rotors and calipers | 5% |
5 | 1 | Shop brakes (hydraulic) parts for the 2009 Infiniti G37 |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
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There is a problem with my transmission in my infiniti 2009 g37 sedan journey. It accelerates on it's own. It happens about once or twice a week. I have taken it to the dealership, they said they did what they could. It got a little better, but the problem still persists.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 30, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Infiniti G37 years have the most problems?
By NHTSA complaint volume, 2009 carries the most filings on the Infiniti G37. The 2009 alone has 102 complaints, led by air bags.
What is the most common Infiniti G37 problem?
On the 2009 model year, the most-reported component is air bags with 46 complaints. The table above lists the top components for every year.
At what mileage do Infiniti G37 problems start?
The median mileage at failure across all Infiniti G37 complaints that include mileage is about 45,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.