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Infiniti I35

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Infiniti I35: A Comprehensive Guide

The Infiniti I35 is a mid-size luxury sedan produced by Nissan's luxury division, Infiniti, from 2002 to 2004. It's essentially a rebadged and slightly refined version of the Nissan Maxima, offering a more upscale interior, enhanced features, and a smoother driving experience aimed at a discerning customer base. The I35 falls into the "near-luxury" or "entry-level luxury" segment, competing with vehicles like the Acura TL and Lexus ES series.

Generations

First Generation (2002-2004)

The I35 only had one generation. It replaced the Infiniti I30 and represented a styling refresh and minor feature enhancements over its predecessor.

  • Years: 2002-2004
  • Key Changes:
    • Engine: Upgraded 3.5-liter V6 engine (VQ35DE) replacing the I30's 3.0-liter V6.
    • Styling: Refreshed exterior with a new grille, headlights, taillights, and wheels.
    • Interior: Improved interior materials and design, offering a more luxurious feel.
    • Features: Available features included leather upholstery, a premium Bose audio system, automatic climate control, and power accessories.

Reliability & Common Issues

The Infiniti I35 is generally considered a reliable car, sharing its robust mechanicals with the Nissan Maxima. However, like any used vehicle, there are specific areas to pay close attention to:

  • VQ35DE Engine: While generally reliable, the VQ35DE engine is known for several potential issues:
    • Oil Consumption: Some VQ35DE engines, particularly in earlier years (especially pre-2004), can exhibit excessive oil consumption. This is often due to piston ring issues. Regular oil level checks are crucial. Consider a compression test before purchase.
    • Timing Chain Tensioner: The timing chain tensioner can wear over time, leading to timing chain rattle, especially on startup. If ignored, it can lead to more serious engine damage. Listen carefully for any unusual noises during cold starts.
    • Coil Packs: Ignition coils can fail over time, causing misfires and rough running. Replacing all coils at once as preventative maintenance is often recommended.
    • Valve Cover Gaskets: These gaskets are prone to leaking, causing oil to drip onto the exhaust manifold, producing a burning smell.
  • Automatic Transmission: The automatic transmission (typically a 4-speed) is generally reliable, but fluid changes are essential for longevity. Neglecting transmission fluid changes can lead to slipping, harsh shifting, and premature failure. Check for any signs of transmission issues during a test drive.
  • Suspension: The suspension components, such as struts and bushings, can wear out over time, leading to a less comfortable ride and diminished handling. Listen for clunking noises from the suspension when going over bumps.
  • Rust: Depending on the climate where the car was driven, rust can be a concern, particularly in areas with salted roads. Inspect the undercarriage, rocker panels, and wheel wells for signs of rust.
  • Electrical Issues: Check all electrical components, including power windows, door locks, sunroof, and audio system, for proper functionality.
  • Catalytic Converter: The catalytic converter can fail over time, especially if the engine has experienced oil consumption issues. A failed catalytic converter will usually trigger a check engine light.

Driving Experience

The Infiniti I35 offers a comfortable and refined driving experience. The 3.5-liter V6 engine provides ample power for acceleration and highway cruising. The ride is generally smooth and composed, making it a good choice for long-distance driving.

  • Pros:
    • Strong V6 engine with good performance.
    • Comfortable ride.
    • Upscale interior for its time.
    • Generally reliable if properly maintained.
  • Cons:
    • Fuel economy is not exceptional.
    • The 4-speed automatic transmission feels dated compared to newer vehicles with more gears.
    • Potential for oil consumption issues in some engines.
    • Parts availability can be slightly more limited than for the Nissan Maxima.

Buying Advice

If you're considering purchasing an Infiniti I35, here's some advice to keep in mind:

  • Years to Look For: All I35 model years (2002-2004) are essentially the same, so focus more on condition and maintenance history than specific model years.
  • Years to Avoid (Potentially): Earlier models (2002-2003) might be slightly more prone to oil consumption issues. Thoroughly inspect the engine of any prospective purchase.
  • Pre-Purchase Inspection: Get a thorough pre-purchase inspection from a qualified mechanic, paying particular attention to the engine (oil consumption, timing chain noise), transmission, suspension, and brakes.
  • Maintenance Records: Look for a car with detailed maintenance records, demonstrating regular oil changes, transmission fluid changes, and other preventative maintenance.
  • Check for Oil Leaks: Carefully inspect the engine for any signs of oil leaks, particularly around the valve covers.
  • Test Drive Thoroughly: Take the car for a long test drive, paying attention to how it shifts, accelerates, and handles. Listen for any unusual noises.
  • Consider the Nissan Maxima: Remember that the I35 is essentially a rebadged Maxima. If you're on a tight budget, a well-maintained Maxima of the same era can offer similar performance and reliability at a lower price. However, it will lack some of the luxury features and styling of the Infiniti.
  • Be Realistic: These cars are now quite old. Expect to perform some repairs and maintenance, even on well-maintained examples. Factor this into your budget.
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