The Best Years For Infiniti I35 And Some To Avoid

The Infiniti I35, a luxury sedan produced from 2002 to 2004, offered a comfortable ride and a reliable engine. However, like any vehicle, certain model years proved to be more dependable and problem-free than others. This guide aims to provide a comprehensive overview of the best and worst years for the Infiniti I35, helping you make an informed decision if you're considering purchasing one.

Infiniti I35 Model Years: A Detailed Overview

Detailed Explanations

2002 Infiniti I35: The inaugural year for the I35, the 2002 model generally receives positive reviews for its VQ35DE engine, known for its robust performance and relative reliability. The ride quality is also a highlight, offering a smooth and comfortable experience. However, it's crucial to inspect for signs of oxygen sensor failures, a somewhat common issue, and to check the transmission fluid condition, as early signs of wear can indicate future problems.

2003 Infiniti I35: Infiniti made several improvements to the 2003 I35, particularly in the interior materials and sound insulation, resulting in a more refined cabin experience. The VQ35DE engine continued to provide excellent performance. Potential buyers should be aware of similar issues to the 2002 model, including the possibility of oxygen sensor problems and transmission wear. Additionally, pay close attention to any signs of rust, especially in areas prone to corrosion.

2004 Infiniti I35: As the final year of production, the 2004 I35 may have benefited from some minor refinements implemented throughout the model's lifespan. Due to its age, it's likely to be available at a lower price point. However, prospective buyers should be prepared for potential age-related issues, such as worn suspension components, deteriorated rubber hoses and seals, and potentially more significant rust. A thorough inspection by a qualified mechanic is essential before purchase.

Key Areas to Inspect When Buying a Used Infiniti I35

Before purchasing any used Infiniti I35, regardless of the model year, consider the following inspection points:

• Engine: Listen for unusual noises (knocking, ticking), check for leaks, and ensure smooth acceleration. A pre-purchase inspection by a mechanic is highly recommended.

• Transmission: Pay close attention to shifting smoothness. Jerky or delayed shifts can indicate transmission problems. Check the transmission fluid level and condition. Dark or burnt-smelling fluid is a red flag.

• Suspension: Test the car on uneven surfaces to assess ride quality. Listen for clunking or rattling sounds, which may indicate worn suspension components.

• Brakes: Check brake pad thickness and rotor condition. Ensure the brakes are responsive and do not produce excessive noise.

• Electrical System: Test all electrical components, including lights, windows, power seats, and the sound system.

• Rust: Thoroughly inspect the undercarriage, wheel wells, and body panels for signs of rust. This is especially important in areas where salt is used on roads during winter.

• Interior: Check for wear and tear on the seats, carpets, and dashboard. Ensure all interior features, such as the climate control system, are functioning correctly.

• Maintenance Records: Review the vehicle's maintenance history to determine if it has been properly cared for. Regular maintenance, including oil changes and fluid flushes, is crucial for the longevity of any vehicle.

Common Problems and Issues with the Infiniti I35

While the Infiniti I35 is generally a reliable vehicle, certain issues have been reported more frequently than others:

• Oxygen Sensor Failure: A common issue, often indicated by a check engine light. Replacing the faulty sensor is usually a straightforward repair.

• Transmission Problems: While not widespread, some owners have reported transmission issues, particularly with older models. Regular transmission fluid changes are essential for preventative maintenance.

• Rust: Rust can be a concern, especially in regions with harsh winters. Regularly washing and waxing the car, and addressing any rust spots promptly, can help prevent further corrosion.

• Catalytic Converter Failure: Catalytic converter failure can occur over time, leading to reduced engine performance and emissions issues.

• Valve Cover Gasket Leaks: Valve cover gaskets can dry out and leak over time, resulting in oil leaks.

• Power Window Issues: Some owners have reported problems with power window regulators and motors.

Why Choose an Infiniti I35?

Despite its age, the Infiniti I35 offers several compelling reasons to consider purchasing one:

• Reliable Engine: The VQ35DE engine is known for its durability and performance.

• Comfortable Ride: The I35 provides a smooth and comfortable ride, making it a pleasant car for long trips.

• Luxury Features: Even by today's standards, the I35 offers a good range of luxury features, such as leather seats, power accessories, and a premium sound system.

• Affordable Price: Due to its age, the I35 can be purchased for a relatively low price, making it an attractive option for budget-conscious buyers.

• Decent Handling: The I35 offers a good balance of comfort and handling, making it enjoyable to drive.

Factors Affecting Reliability

Several factors can affect the reliability of a used Infiniti I35:

• Maintenance History: A well-maintained I35 is more likely to be reliable than one that has been neglected.

• Driving Conditions: Cars driven in harsh conditions (e.g., extreme temperatures, heavy traffic) may experience more wear and tear.

• Location: Cars located in areas with harsh winters are more susceptible to rust.

• Driving Habits: Aggressive driving can accelerate wear and tear on the engine, transmission, and brakes.

Tips for Finding a Good Used Infiniti I35

• Do Your Research: Learn about the I35's common problems and issues before you start shopping.

• Inspect the Car Thoroughly: Pay close attention to the areas mentioned above.

• Get a Pre-Purchase Inspection: Have a qualified mechanic inspect the car before you buy it.

• Check the Vehicle History Report: Obtain a vehicle history report (e.g., Carfax, AutoCheck) to check for accidents, title issues, and odometer discrepancies.

• Negotiate the Price: Be prepared to negotiate the price based on the car's condition and any identified issues.

Frequently Asked Questions

Which Infiniti I35 year is the most reliable? While all years have their strengths and weaknesses, the 2003 model often balances improvements with minimal common issues, provided it has been well-maintained.

What are the most common problems with the Infiniti I35? Common issues include oxygen sensor failures, potential transmission wear (especially in older models), and rust, particularly in colder climates.

How long will an Infiniti I35 last? With proper maintenance, an Infiniti I35 can easily last for 200,000 miles or more.

Is the Infiniti I35 expensive to maintain? Maintenance costs are generally reasonable, but unexpected repairs can be more expensive due to the car's age and potential need for specialized parts.

What is the fuel economy like on the Infiniti I35? The Infiniti I35 typically achieves around 19 mpg in the city and 26 mpg on the highway.

Is the Infiniti I35 a safe car? The Infiniti I35 received good safety ratings during its production years, offering features like anti-lock brakes and airbags.

Conclusion

Choosing the "best" year for an Infiniti I35 depends on your individual needs and priorities. While the 2003 model often strikes a good balance, a well-maintained example from any year can provide years of reliable service. Prioritize a thorough inspection and a comprehensive understanding of the car's history to make an informed decision.