Driving a 2009 Infiniti G37 offers a blend of sporty performance and luxury refinement that remains compelling even over a decade after its introduction. While the FX35 and FX50 variants share the platform, this specific model year is often praised for its responsive VQ35HR engine and precise handling. However, like any complex machine, ownership comes with specific nuances that potential buyers should understand before committing.
Common Mechanical Concerns
Owners of the 2009 Infiniti G37 frequently report issues related to the turbocharged variants, though naturally aspirated models are not without their own set of challenges. One of the more serious concerns involves the valve cover gasket, which can degrade over time and lead to oil leaks. Addressing this promptly is crucial, as a significant leak can cause damage to other engine components and create a messy undercarriage.
The automatic transmission is another area requiring attention, particularly in models equipped with the 7-speed automatic. Some drivers have noted harsh shifting or delayed engagement, which can be a sign of worn internal parts or low fluid levels. Regular maintenance using the correct fluid type is essential to ensure the longevity of this critical component.
Electrical and Infotainment Issues
The G37's sophisticated infotainment system, while advanced for its time, is not immune to malfunctions. Owners have experienced glitches with the navigation unit, including frozen screens or failure to recognize discs. A system reset often resolves these issues, but persistent problems may require professional diagnosis of the head unit or wiring harness.
Beyond the main console, minor electrical gremlins can appear, such as malfunctioning power windows or intermittent failures of the dashboard lighting. These issues are usually related to a failing switch or a corroded connector, which an experienced mechanic can trace and repair efficiently.
Performance and Handling Nuances
While the G37 is celebrated for its agile steering and balanced chassis, the sport-tuned suspension can wear out faster than expected. Drivers might notice increased road vibration or a harsher ride as the struts and shocks degrade. Replacing these components not only restores comfort but also ensures the vehicle maintains its renowned handling precision.
Brakes are another wear item that demands attention, especially for those who enjoy spirited driving. The stock pads and rotors may show signs of warping or excessive thinning relatively quickly. Upgrading to performance-grade components can provide improved stopping power and resistance to fade during aggressive use.
Maintenance Recommendations
Owning a 2009 Infiniti G37 successfully hinges on adhering to a strict maintenance schedule. Staying current with oil changes, fluid flushes, and filter replacements is the single best way to prevent major mechanical failures. Keeping detailed records of all service provides invaluable documentation for future owners and helps identify potential issues early.
Specifically, monitoring the turbocharged engine's boost pressure and cooling system is vital for FX models. Ensuring the intercooler and associated hoses are in good condition can prevent overheating and maintain the efficiency of the forced induction system.
Reliability and Long-Term Ownership
With proper care, the 2009 Infiniti G37 can deliver a rewarding ownership experience for well over 100,000 miles. The key to reliability lies in addressing minor issues before they escalate into major repairs. Ignoring unusual noises or warning lights can lead to catastrophic failures that drastically reduce the vehicle's lifespan.
For those considering a used example, a pre-purchase inspection by a qualified mechanic familiar with Infiniti vehicles is highly recommended. This step can uncover hidden problems and provide leverage for negotiation, ensuring that the purchase decision is based on a clear understanding of the car's condition.
