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Infiniti G35

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Infiniti G35: A Comprehensive Buyer's Guide

The Infiniti G35 is a compact executive car produced by Nissan's luxury division, Infiniti, from 2002 to 2007. Marketed as a sport sedan and coupe, the G35 aimed to compete with established European rivals like the BMW 3 Series and the Mercedes-Benz C-Class. It's praised for its powerful engine, sporty handling, and luxurious features, making it a popular choice for enthusiasts seeking a blend of performance and comfort. Its successor is the Infiniti G37, which replaced the G35 Coupe in 2008 and the G35 Sedan in 2009.

Generations

First Generation (V35, 2003-2007)

The first generation G35 (V35 chassis) was a significant step for Infiniti, marking a departure from its previous offerings. It was based on the Nissan FM platform, known for its front-midship engine placement, which contributed to improved weight distribution and handling.

  • 2003-2004: Introduced as a sedan, featuring a 3.5-liter VQ35DE V6 engine producing 260-280 horsepower, depending on the trim level. Available with a 5-speed automatic or a 6-speed manual transmission. Key features included leather seats, automatic climate control, and a Bose audio system.
  • 2003-2007 (Coupe): The coupe version was launched shortly after the sedan, offering a more aggressive design and a sportier driving experience. It featured a 280-horsepower VQ35DE engine and was available with the same transmission options as the sedan.
  • 2005-2006: Mid-cycle refresh for the sedan, including revised headlights, taillights, and interior trim. The engine was upgraded to produce 280-298 horsepower, depending on the trim. A 6-speed manual transmission was made available on the sedan as well.
  • 2007: Final year of production for the first generation. Minor changes were made. The engine remained the same for the sedan and coupe.

Reliability & Common Issues

The Infiniti G35, while generally reliable, has its share of common issues. Addressing these concerns proactively can save you time and money in the long run.

  • Oil Consumption: A well-documented issue, particularly in earlier VQ35DE engines (2003-2006). Piston ring design flaws can lead to excessive oil consumption, sometimes exceeding 1 quart every 1,000 miles. Regular oil level checks are crucial. Look for signs of blue smoke from the exhaust. This is a major concern, and a compression test can help determine the severity. Later models (2007+) with the revised engine design are less prone to this issue.
  • Camshaft Position Sensors (CPS): A common failure point, often resulting in a check engine light and drivability issues. Replacing the sensors is relatively inexpensive and straightforward.
  • Crankshaft Position Sensor (CKPS): Similar to the CPS, the CKPS can fail and cause the engine to stall or refuse to start. Replacement is recommended.
  • Valve Cover Gaskets: The valve cover gaskets can leak oil over time, causing a burning smell and potential oil drips onto the exhaust manifolds. Replacing these gaskets is a common maintenance item.
  • Timing Chain Tensioners: The timing chain tensioners can wear out and cause the timing chain to rattle, especially upon startup. This is a more involved repair but essential to prevent engine damage. Listen for a rattling noise on cold starts.
  • Automatic Transmission Issues: Some owners have reported issues with the automatic transmission, including rough shifting and slipping. Regular transmission fluid changes are essential for maintaining transmission health. Look for jerky shifts or hesitation.
  • Bose Audio System Problems: The Bose audio system, while initially impressive, can suffer from amplifier failures and speaker distortion over time.
  • Rust: Check for rust, especially in areas prone to corrosion like the undercarriage, wheel wells, and around the door sills. Cars from regions with harsh winters are more susceptible.
  • Suspension Components: Worn suspension components, such as ball joints, control arms, and shocks, can lead to poor handling and ride quality. Listen for clunking noises over bumps.

Driving Experience

The Infiniti G35 is known for its engaging driving experience, blending performance with a degree of luxury. It's a driver's car that offers a satisfying connection to the road.

Pros:

  • Powerful Engine: The VQ35DE engine provides strong acceleration and a rewarding soundtrack.
  • Sporty Handling: The FM platform and well-tuned suspension deliver agile handling and responsive steering.
  • Comfortable Interior: The interior is well-appointed with comfortable seats and quality materials, especially in higher trim levels.
  • Stylish Design: The G35's exterior design is sleek and athletic, aging gracefully over time.
  • Available Manual Transmission: The 6-speed manual transmission option appeals to driving enthusiasts who prefer more control.
  • Value: Compared to its European rivals, the G35 offers excellent performance and features for the price.

Cons:

  • Oil Consumption (Early Models): As mentioned earlier, oil consumption is a significant concern in 2003-2006 models.
  • Road Noise: The G35 can be noisy on the highway, especially on rough road surfaces.
  • Fuel Economy: Fuel economy is average at best, particularly with the automatic transmission.
  • Interior Plastics: Some interior plastics feel cheap and can be prone to scratching.
  • Limited Rear Seat Space (Coupe): The coupe's rear seats are cramped and not suitable for adults on longer journeys.

Buying Advice

If you're considering purchasing an Infiniti G35, here's some advice to help you make an informed decision:

  • Year to Look For: The 2007 models are generally considered the most desirable due to the revised engine design that addresses the oil consumption issue. The 2005-2006 models are also good choices if they have been well-maintained and the oil consumption issue has been addressed.
  • Years to Potentially Avoid: The 2003-2004 models are more prone to oil consumption and other early production issues. Thoroughly inspect these models and check their maintenance history.
  • Pre-Purchase Inspection: A pre-purchase inspection by a qualified mechanic is highly recommended. Pay close attention to the engine's condition, oil consumption, transmission performance, and suspension components.
  • Check Maintenance Records: Review the maintenance records carefully to ensure that the car has been properly maintained. Look for evidence of regular oil changes, transmission fluid changes, and other essential maintenance tasks.
  • Test Drive: Test drive the car thoroughly to assess its handling, acceleration, and overall driving experience. Listen for any unusual noises or vibrations.
  • Check for Modifications: Be wary of heavily modified cars, as modifications can sometimes mask underlying problems. If you're not familiar with the modifications, it's best to avoid them.
  • VIN Check: Run a VIN check to uncover any accident history, title issues, or odometer discrepancies.
  • Negotiate the Price: Research the fair market value of the car based on its condition, mileage, and features. Be prepared to negotiate the price accordingly.
  • Consider the Coupe vs. Sedan: Decide which body style best suits your needs. The coupe offers a sportier driving experience, while the sedan provides more practicality and passenger space.
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