Is the 2009 Infiniti G37 a bad year?
167 owner complaints to NHTSA. Engine and transmission complaints are in line with other G37 years.
Keep it
Engine and transmission complaints for the 2009 Infiniti G37 are in line with other G37 years. Air bags stands out for this year: see below.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2009 G37 owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 75,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| Air bagsSTANDS OUT | 88 (53%) | 54k–89k miles · around this mileage | — |
| Engine | 23 (14%) | 29k–117k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Electrical system | 16 (10%) | 22k–76k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Transmission and drivetrain | 18 (11%) | 11k–64k miles · mostly behind | — |
| Speed control | 9 (5%) | 18k–60k miles · mostly behind | — |
| Seats | 13 (8%) | too few with a mileage | — |
| Brakes | 7 (4%) | too few with a mileage | — |
| Visibility and wipers | 7 (4%) | too few with a mileage | — |
| Body structure | 5 (3%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 75,000 miles. Not a quote.
What owners reported alongside their complaints
Of 167 complaints: 5 mention a crash · 1 reports an injury.
2 complaints were filed in the last 12 months, the newest in Mar 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
Recalls for the 2009 Infiniti G37: 0
No recall campaign lists this model year.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Infiniti: 77
Repair instructions Infiniti sent its dealers for symptoms seen in the shop on the 2009 Infiniti G37. Ask a dealer or mechanic for a bulletin by its number.
Clicking noise from front or rear axle during take-off/acceleration
DTC P0456 caused by EVAP leak at vent control valve o-ring
OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018
Replacement 5-speed rear wheel drive Automatic Transmission (A/T) assemblies and replacement control valves…
Neighbouring years
2008 G37: 66 complaints, keep it · 2010 G37: 77 complaints, keep it.
Every Infiniti G37 year
2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2015 · All G37 years side by side
Other Infiniti models: Infiniti FX35 · Infiniti G35 · Infiniti I35 · Infiniti JX35 · Infiniti M35 · Infiniti M45 · Infiniti Q50 · Infiniti QX4 · Infiniti QX50 · Infiniti QX56 · Infiniti QX60. All makes and models.
Questions
Is the 2009 Infiniti G37 a bad year?
167 owner complaints to NHTSA. Engine and transmission complaints are in line with other G37 years. At 75,000 miles the tool says: Keep it.
What are the most common problems with the 2009 Infiniti G37?
By owner complaints to NHTSA: air bags (88), engine (23), electrical system (16), transmission and drivetrain (18), speed control (9).
How many recalls does the 2009 Infiniti G37 have?
No recall campaign lists this model year in NHTSA data. Check your VIN at nhtsa.gov/recalls to confirm.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.