Steer clear of the 2009 and 2010 Infiniti G37 if you want the strongest reliability. Later years, particularly 2011–2013, tend to offer better long-term dependability with proper maintenance. This article explains which model years are riskier and how to evaluate any used G37 before purchase.
Model-year differences at a glance
The Infiniti G37 was produced from 2009 through 2013 before the line was rebranded. Early years introduced new engine and transmission technology that carried some teething problems, while later years benefited from refinements. Below is a year-by-year snapshot of reliability trends commonly reported by owners, reviewers, and recalls data up to today.
Years to approach with caution
These years have the most consistently reported reliability concerns in owner forums and aftermarket sources. If you’re considering a G37 from these model years, plan for a thorough pre-purchase inspection and a careful test drive.
- 2009: The first year of the G37 introduced new hardware (including the 7-speed automatic). Some owners reported transmission calibration quirks and occasional rough shifting, which can be a source of ongoing maintenance if not addressed early.
- 2010: Continued reports of transmission behavior and some electrical-related gremlins. Software updates and recalls addressed certain issues, but the risk profile remained higher than later years.
Overall, these patterns reflect a higher baseline risk for 2009–2010 G37s, making them the years buyers most often weigh carefully or avoid if reliability is the priority.
Later years seen as more dependable
As Infiniti refined the platform, reliability improved for the mid-generational run. The following years are generally viewed as more dependable, provided the vehicle has a clean maintenance history and proof of recall work.
- 2011: Notable for improved transmission calibration and more mature electronics; reports of fewer major defects compared with 2009–2010.
- 2012: Continued refinement; many owners report solid reliability when the car has been well maintained and recalls have been completed.
- 2013: The final year of the G37 before the model was rebranded; typically reliable with maintenance history and proper recall fixes in place.
Taken together, 2011–2013 are often recommended as the stronger used-G37 bets, especially for buyers who want to avoid earlier-generation quirks while still accessing a sporty Infiniti package.
What to check when buying a used G37
Beyond year selection, a thorough pre-purchase evaluation is essential. The following checks help you separate solid examples from lemons.
- Maintenance history: Look for regular oil changes, documented service on the transmission/fluids, and evidence of routine inspections. A full service history is a strong indicator of care.
- Transmission condition: Test for smooth upshifts and downshifts, no shudder, slip, or harsh transitions. Any hesitation or unusual noises during acceleration warrants closer inspection.
- Engine health: Check for consistent idle, absence of misfire codes, and oil consumption. Look for leaks around the valve covers and oil pan and verify that consumption hasn’t escalated with mileage.
- Electrical and infotainment: Test all dashboards, lights, sensors, and steering-wheel controls. Ensure navigation and Bluetooth functions work reliably, and verify there are no stored fault codes.
- Brakes and suspension: Inspect brake pads, rotors, and suspension components for wear. Listen for clunks or excessive bounce on bumps, which can indicate worn bushings or damaged components.
- Recalls and service campaigns: Check the VIN for open or completed recalls with Infiniti/NHTSA portal or dealership records. Ensure required recalls have been performed.
Strong pre-purchase diligence reduces the risk of inheriting a car with expensive surprises, regardless of model year.
Recalls and safety status
Infiniti G37 vehicles have been subject to recalls over the years, reflecting standard safety campaigns common to older models. Before purchase, verify that all recalls for the specific VIN have been addressed and that the vehicle has current safety-related updates. Checking official recall databases and the dealership service history is a prudent step.
- Recall verification: Use the VIN to confirm open or resolved recalls and ensure dealers have performed required fixes.
- Safety campaigns: In addition to recalls, confirm any ongoing campaigns or required service updates that may affect airbags, fuel systems, steering, or other critical systems.
Recalls matter more than the model year alone because a well-maintained example with all recalls addressed can be more reliable than a late-year example with overdue servicing.
Summary
For the Infiniti G37, the strongest reliability profile tends to be in the 2011–2013 range, while the 2009–2010 models carry higher risk of transmission and electrical issues. If you’re shopping used, prioritize a 2011–2013 example with a clean maintenance and recall history, and insist on a thorough pre-purchase inspection and a documented test drive. A well-kept G37 from these later years can offer the sporty performance and luxury that drew buyers to Infiniti, with fewer of the early-year glitches.