The Enduring Allure: Charting the Evolution of the Infiniti G37

Infiniti

In the pantheon of modern sports sedans, few vehicles have carved out a legacy as respected and enduring as the Infiniti G37. Born from a brand tasked with challenging the German establishment, the G37 was more than just a car; it was a statement. It combined a charismatic and powerful engine with sharp handling, elegant styling, and an accessible price point, creating a perfect storm of performance and value. For a dedicated community of enthusiasts, the G37 remains a modern classic, a testament to a specific era of Japanese engineering excellence. To understand its impact, one must trace its evolution from its storied predecessor through its model years, diverse trims, and eventual transition into the future.

A Legacy Reborn: The G35 Foundation

The G37 did not emerge from a vacuum. Its DNA was inherited directly from the Infiniti G35, a car that, upon its 2003 debut, stunned the automotive world. The G35 was the first vehicle to truly put Infiniti’s new “letter and number” naming convention on the map, and it did so by offering a potent rear-wheel-drive platform, a thrilling V6 engine shared with the Nissan 350Z, and a level of driver engagement that directly targeted the BMW 3 Series. The G35 was a resounding success, establishing Infiniti as a legitimate player in the premium sports sedan and coupe market. It set a high bar, and by 2008, the brand was ready to elevate the formula.

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The Debut: The 2008 Infiniti G37

For the 2008 model year, Infiniti launched the all-new, second-generation G37. It was not merely an update to the G35; it was a complete redesign, built on a new FM (Front Midship) platform that offered improved rigidity and a lower center of gravity.

Exterior and Interior Design: The G37 shed the softer, more rounded lines of the G35 for a more aggressive and angular design language. The signature Infiniti double-arch grille was sharpened, the headlights became more menacing, and the overall profile grew slightly, with a longer wheelbase and wider track. The interior was a significant leap forward, moving away from the G35’s more functional cabin to a “dual-wave” dashboard design that was both driver-focused and artfully sculpted. Higher quality materials and improved fit and finish brought it in line with its German rivals.

Powertrain: The centerpiece of the G37 was its new engine. The venerable VQ35DE V6 from the G35 was replaced by the larger displacement VQ37VHR. Displacing 3.7 liters, this engine featured Variable Valve Event and Lift (VVEL), a sophisticated system that continuously adjusted valve timing and lift for both performance and efficiency. The result was a silky-smooth powerband, a thrilling 8,500 RPM redline, and a signature exhaust note that became synonymous with the car.

Initial Models and Trim Levels: At launch, the G37 was offered in several distinct configurations:

  • G37 Sedan: The core model, available in base and premium trims.
    • Base: Included the V6 engine, 7-speed automatic transmission, 17-inch alloy wheels, power-everything, Infiniti’s signature analog clock, and a 6-speaker audio system with an in-dash CD player.
    • Premium Package: Added heated front seats, a power tilt/telescoping steering wheel, a sunroof, an 8-way power passenger seat, automatic climate control, and a premium Bose audio system.
  • G37 Coupe: A standalone model sharing the same powertrain but with its own distinct body style. It featured a longer hood, a shorter rear deck, and was visually distinguished by its standard 18-inch wheels and absence of a B-pillar.
  • G37x Sedan: The all-wheel-drive variant, featuring the advanced ATTESA E-TS intelligent AWD system. It was primarily offered with the automatic transmission.

The 2009 Model Year: Expanding the Lineage

The second year of the G37 saw the introduction of a crucial new variant that would come to define the car’s enthusiast appeal: the G37xS Sedan.

The G37xS (Sport) Sedan: This was the definitive sport-oriented package for the sedan. It included:

  • A 6-speed manual transmission (a rare offering in the midsize luxury sedan class at the time).
  • viscous limited-slip differential (VLSD).
  • Sport-tuned suspension with larger stabilizer bars.
  • Larger 4-wheel disc brakes with front vented rotors.
  • VDC (Vehicle Dynamic Control) with “Sport” mode.
  • Unique 18-inch sport alloy wheels with wider performance tires.
  • Sport seats with more aggressive bolstering, a leather-wrapped steering wheel with audio controls, and aluminum interior trim.

Also in 2009, Infiniti introduced the G37 Convertible, further broadening the model’s appeal. Built on the coupe’s chassis, it featured a sophisticated three-piece retractable hardtop, which folded neatly into the trunk. This allowed the G37 to offer the open-air thrill of a convertible without sacrificing the security and quietness of a coupe in the winter months.

The 2010 Model Year: A New Transmission and Special Editions

By 2010, the G37 lineup was well-established. The key update for this year was the introduction of a new transmission option for automatic models.

  • Jatco 7-speed Automatic with Adaptive Shift Control: While the G37 launched with a 7-speed auto, the 2010 model year refined this unit and made it standard across the range (unless paired with the 6-speed manual in the G37xS). This transmission offered Manual Shift Mode with Downshift Rev Matching (DRM), which blipped the throttle on downshifts for a smoother, more performance-oriented feel.

Sport Model Refinements: The G37xS Sport package was slightly rebranded and became simply the “S” model. The G37S Sedan and G37S Coupe now included standard nav as part of the sport package, along with Bluetooth and an auto-dimming rearview mirror.

Special Editions:

  • G37 IPL (Infiniti Performance Line): Toward the end of the model year, Infiniti unveiled its new high-performance division, IPL. The first IPL model was the G37 Coupe. It featured a unique body kit, 19-inch wheels, a retuned suspension, and a bump in power to 348 hp (up from 330 hp) through a free-flowing exhaust and ECU remapping. The interior received sport leather seats with red stitching and unique trim.
  • G37 Journey: This was a new trim level for the sedan that effectively replaced the “Base” model. It bundled popular features like heated front seats, a power passenger seat, and automatic climate control as standard, making it a better value proposition.

The 2011-2013 Model Years: Refinement and the Final Chapter

The G37 entered its final production years with only minor changes, a testament to its well-executed initial design. The core of the car remained the same, but Infiniti continued to shuffle packages and add small features.

  • 2011: The G37 Convertible received an “S” sport model, mirroring the sedan and coupe. The navigation system was updated with a larger 7-inch screen and real-time traffic info. Bluetooth became standard on most trims.
  • 2012: Infiniti’s Infiniti Connection telematics system became available. The S and IPL models received new 19-inch wheel designs. A new “G37x AWD” trim was introduced for the sedan, which was the automatic AWD version without the sport suspension or LSD, sitting between the Journey and the xS.
  • 2013: This was the final and most feature-rich model year for the G37. The G37xS Coupe now offered the optional 7-speed automatic (previously manual-only). A new “G37S Journey” sedan trim combined the features of the Journey model with the sport suspension, brakes, and 18-inch wheels of the S model. By the end of this year, the lineup was incredibly diverse, catering to nearly every possible buyer preference.

Recap of Final G37 Offerings (Model Year 2013):

  • Sedan:
    • Journey: The value-focused standard sedan.
    • x: The automatic-only AWD model.
    • xS: The sport-oriented AWD model with manual or automatic.
    • S Journey: The new AWD sport model.
  • Coupe:
    • Base: The standard rear-drive coupe.
    • S: The sport model with 6-speed manual or optional 7-speed auto.
  • Convertible:
    • Base: Rear-drive with automatic.
    • S: Sport model with 7-speed auto.
  • IPL Coupe & Convertible: The top-tier performance models.

Legacy, Community, and Future Outlook

In 2014, the G37 was officially succeeded by the Q50, part of Infiniti’s new “Q” naming strategy. The Q50 was a significant step forward with turbocharged engines and more advanced technology, but for many, it marked the end of an era. The G37’s naturally aspirated V6, its hydraulic steering feel, and its relatively analog driving experience were qualities that were being phased out of the industry.

The G37’s legacy is twofold. On one hand, it is remembered as a commercial and critical triumph that solidified Infiniti’s identity as a builder of exciting, driver-centric cars. It successfully held its own against the BMW 3 Series and Audi A4 for years.

On the other hand, its true legacy is cemented in the used car market. Today, the G37 is a wildly popular platform for modification and community engagement. Its VQ37VHR engine is known for being incredibly robust and capable of handling significant power increases. The vast parts interchangeability between the sedan, coupe, and convertible models has created a thriving aftermarket for suspension, aesthetics, and performance upgrades. Online forums and social media groups are filled with owners sharing their builds, creating a vibrant global community that keeps the spirit of the G37 alive.

As a future classic, the G37 is a strong candidate for appreciation. Well-maintained, low-mileage examples, particularly in rare configurations like a manual-transmission G37xS sedan or an IPL model, are already gaining collector interest. The G37 represents the pinnacle of a specific philosophy—one that prioritized mechanical purity, an intoxicating engine note, and balanced handling over digital gimmicks. It was the right car at the right time, and its enduring allure is a testament to a design and engineering team that got it perfectly right.

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