The 2008 Infiniti G35x represents a significant moment in the brand's history, blending sporty performance with all-weather capability. As a variant of the popular G35 sedan, this model brought a degree of accessibility to the luxury performance market that was relatively new for Infiniti. Owners often look back on these years with a sense of nostalgia, valuing the car's engaging driving dynamics and distinctive design. Understanding the 2008 Infiniti G35x reliability requires looking at the platform's inherent strengths and the specific nuances of the all-wheel-drive system.
The Foundation of Reliability: The VQ35DE Engine
At the heart of the 2008 Infiniti G35x lies the legendary VQ35DE 3.5-liter V6 engine. This powerplant is widely regarded as one of the most reliable engines in its class, earning a reputation for longevity and robust performance. When maintained according to factory specifications, this engine typically provides owners with hundreds of thousands of miles of service. The reliability of the G35x is heavily dependent on the care this specific component receives throughout its lifespan.
Transmission and Drivetrain Dynamics
Mated to the engine is the RE5R05A five-speed automatic transmission, a component that shares the spotlight regarding 2008 Infiniti G35x reliability. This transmission was also used in the Nissan 350Z and is known for its firm shifts and responsive feel. While generally strong, owners should be mindful of transmission fluid service intervals; neglecting these can lead to premature wear. The all-wheel-drive system, borrowed from the Nissan Skyline, sends power to the front wheels primarily and distributes it to the rear when needed, offering a balance of efficiency and traction.
Common Maintenance Points and Wear Items
Ensuring the longevity of a 2008 Infiniti G35x involves attention to specific maintenance items that are common to many vehicles of this age. Regular oil changes with the correct viscosity are paramount for the VQ engine. The timing chain, unlike a timing belt, is generally considered a maintenance-free component for the life of the engine, reducing long-term worries. However, the rear differential, a unique feature of the G35x, requires its own fluid change approximately every 30,000 miles to ensure smooth operation and prevent gear wear.
Check and replace engine oil and filter per the schedule.
Monitor transmission fluid levels and condition regularly.
Inspect the rear differential fluid at the recommended intervals.
Pay attention to the condition of all-wheel-drive drive shafts and boots.
Electrical Components and Infotainment Quirks
As the decade progressed, electrical components became a more frequent topic in discussions about 2008 Infiniti G35x reliability. Owners may encounter issues with the Multi Function Display (MFD) or the radio head unit as the vehicle ages. These are often related to capacitors failing on the circuit boards rather than systemic design flaws. While not catastrophic, these glitches can be inconvenient. A word of caution is warranted regarding the high-wattage amplifier located in the trunk; improper modifications or water intrusion can lead to overheating issues that should be addressed promptly.
Exterior and Interior Durability
From a construction standpoint, the 2008 Infiniti G35x is solid. The chassis rigidity contributes significantly to the driving feel and does not typically suffer from excessive flex. Rust can be a concern in regions that utilize road salt during the winter months, so inspecting the undercarriage, wheel wells, and suspension components is crucial for potential buyers. Inside, the leather upholstery and faux carbon fiber accents hold up well against daily driving, though the driver's knee bolster can wear faster on higher-mileage examples due to the aggressive seating position.
