What breaks most · 2002 to 2009 model years
Infiniti G35 problems by year
Owners have filed 1,235 safety complaints with NHTSA about the Infiniti G35 across model years 2002 to 2009. Three years stand out: 2003 for electrical system complaints, 2004 for exterior lighting complaints and 2005 for air bags complaints. The quietest years are 2002, 2007 and 2006.
- Years to check closely: 2003, 2004, 2005
- Fewest complaints: 2002, 2007, 2006
- Complaints on file
- 12352002 to 2009, all trims
- Worst year
- 2003509 complaints
- Crashes reported
- 6213 fires · 34 injuries · 4 deaths
- Typical failure mileage
- 77kMedian where owners gave mileage
- Recall campaigns
- 17Across 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 |
|---|---|---|---|---|
| 3 | 0 | 0 | Air bags (1) | |
| 509 | 15 | 7 | Electrical system (209) | |
| 229 | 14 | 3 | Exterior lighting (40) | |
| 194 | 8 | 1 | Air bags (40) | |
| 133 | 7 | 2 | Engine and cooling (21) | |
| 91 | 7 | 3 | Air bags (20) | |
| 74 | 10 | 1 | Air bags (25) | |
| 2 | 1 | 0 | Electrical system (1) |
What fails on the 2003 Infiniti G35
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Electrical systemAlternators, starters and ignition | 41% |
209 | 3 | Shop electrical system parts for the 2003 Infiniti G35 |
| VisibilityMirrors and glass | 13% |
68 | 1 | Shop visibility parts for the 2003 Infiniti G35 |
| Engine and coolingRadiators, thermostats and cooling | 13% |
67 | 1 | Shop engine and cooling parts for the 2003 Infiniti G35 |
| EngineEngine gaskets and seals | 11% |
56 | 0 | Shop engine parts for the 2003 Infiniti G35 |
| Exterior lightingHeadlights, tail lights and bulbs | 10% |
52 | 0 | Shop exterior lighting parts for the 2003 Infiniti G35 |
| Equipment and infotainment | 9% |
48 | 0 | — |
| Brakes (hydraulic)Brake pads, rotors and calipers | 8% |
43 | 1 | Shop brakes (hydraulic) parts for the 2003 Infiniti G35 |
| Powertrain and transmissionTransmission parts | 4% |
21 | 0 | Shop all powertrain and transmission parts, not filtered to this vehicle |
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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Was driving my car and the ac and stereo button lights went out, the ac was then stuck on full blast at 70 degrees and could not be shut off or changed and the stereo was inoperable as well.
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Third light failed at approx 62800 miles 5/24/2013 .this is a well documented issue with this vehicle, causing an unsafe condition due to improper warning to following vehicles. This is a very costly repair and should be covered by a recall. To date infiniti has done nothing to correct.
-
Faulty camshaft position sensor - code 0345 - car stalled when driving 15 mph city driving was on a curve car is an automatic was able to restart while coasting in neutral. Approximately 112,000 miles
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 G35 years have the most problems?
By NHTSA complaint volume, 2003, 2004, 2005 carry the most filings on the Infiniti G35. The 2003 alone has 509 complaints, led by electrical system.
What is the most common Infiniti G35 problem?
On the 2003 model year, the most-reported component is electrical system with 209 complaints. The table above lists the top components for every year.
At what mileage do Infiniti G35 problems start?
The median mileage at failure across all Infiniti G35 complaints that include mileage is about 77,000 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.