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2003 Infiniti FX35 Overview, Reviews, Ratings & Specs

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Cathleen V | September 27, 2025
The 2003 Infiniti FX35 marked Infiniti's bold entry into the luxury crossover segment, debuting with an aggressive, sport-oriented "bionic cheetah" body style. Part of the first generation (2003-2008), it was offered alongside the more powerful FX45. With new prices ranging from approximately $34,000 to $44,000, its distinct styling, powerful V6 engine, and car-like handling immediately set it apart, appealing to buyers desiring a blend of SUV practicality and sports sedan exhilaration.
The Good

The 2003 Infiniti FX35 offers a compelling blend of advantages. Its athletic performance, thanks to a potent V6 engine and car-like handling, excites emotional buyers. The bold, distinctive design stands out even today. Practical buyers appreciate its comfortable, well-equipped interior, available all-wheel drive, and strong value in the used market, making it an attractive luxury crossover choice.

The Bad

Potential owners of the 2003 Infiniti FX35 should be aware of a few weaknesses. Its sport-tuned suspension can result in a stiff ride, and the sleek design compromises rear visibility and interior rear passenger/cargo space. Fuel economy for the V6 can also be a concern for some, and common issues with aging electrical components or rust may arise.

2003 Infiniti FX35: Quick Overview

Here is a summary of the 2003 Infiniti FX35's key specifications:


  • Engine Options: The 2003 FX35 is powered by Infiniti's renowned 3.5-liter VQ35DE V6 engine, a staple in many Nissan/Infiniti performance vehicles of the era.

  • Horsepower: This potent V6 delivers a robust 280 horsepower at 6,200 rpm and 270 lb-ft of torque at 4,800 rpm.

  • Fuel Economy: EPA estimated fuel economy for the Rear-Wheel Drive (RWD) model is around 17 MPG city / 23 MPG highway. For the Intelligent All-Wheel Drive (AWD) version, it's slightly lower at approximately 16 MPG city / 21 MPG highway.

  • 0-60 MPH Times: The FX35 is quite quick for its class, achieving 0-60 mph acceleration in an estimated 6.3 to 6.5 seconds, depending on drivetrain and conditions.

  • Towing Capacity: When properly equipped with the optional tow package, the 2003 Infiniti FX35 has a respectable towing capacity of up to 3,500 pounds.

  • Trim-Level Features: The FX35 was primarily offered as a single trim with either RWD or AWD, but came with a generous list of standard features and numerous optional packages.

    • Standard Features: 18-inch aluminum-alloy wheels, Xenon (HID) headlamps, fog lights, leather seating surfaces, 8-way power driver's seat, 4-way power passenger's seat, automatic climate control, a leather-wrapped steering wheel, power windows, locks, mirrors, cruise control, and a 6-speaker audio system with a CD player.

    • Optional Features (often bundled in Premium, Touring, or Technology Packages): These could include 20-inch alloy wheels (part of the Sport Package), a premium Bose 11-speaker audio system, a DVD-based navigation system, a pioneering rearview monitor, heated front seats, a power tilt/telescoping steering column, memory functions for the driver's seat, steering wheel, and mirrors, roof rails, and an integrated garage door opener.

2003 Infiniti FX35 Specifications

Vehicle Information
Year 2003
Make Infiniti
Model FX35
Trim -
Style -
Type Sport Utility Vehicle
Category Standard Sport Utility Vehicle
Manufacturing Details
Made In Japan
Manufacturing City SAMUKAWA
Dimensions
Doors 4-Door
Curb Weight 4204 pounds
Gross Vehicle Weight Rating 5351 pounds
Overall Height 65.00 inches
Overall Length 189.10 inches
Overall Width 75.80 inches
Wheelbase Length 112.20 inches
Standard Seating 5
Engine & Performance
Engine 3.5L V6
Engine Size 3.5L
Engine Cylinders 6
Transmission 5-Speed Automatic
Transmission Type Automatic
Transmission Speeds 5-Speed
Drivetrain Four-Wheel Drive
Additional Features
Anti-Brake System 4-Wheel ABS
Steering Type Rack & Pinion
Pricing
Manufacturer Suggested Retail Price (MSRP) $35,700
Invoice Price $32,316
Delivery Charges $545

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What Problems Does the 2003 Infiniti FX35 Have?

The 2003 Infiniti FX35, while generally a robust vehicle, has several frequently reported problems and long-term reliability concerns that potential owners should be aware of, especially given its age.


One of the most common complaints, particularly with models equipped with the larger 20-inch wheels, is tire feathering and uneven wear. This issue often leads to premature tire replacement and increased road noise, and it's frequently attributed to the vehicle's aggressive suspension geometry or improper alignment. Another recurring engine-related concern is oil consumption; while not universal, some VQ35DE engines in early FX models can consume oil at a higher rate, necessitating regular checks and top-offs. Owners also frequently report brake rotor warping, which can be exacerbated by spirited driving, often leading to pulsation and requiring more frequent rotor replacement or an upgrade to aftermarket components.


As the vehicle ages, power window motor failures are not uncommon, a problem shared with many Nissan/Infiniti models of this era. The interior may also show signs of wear, notably dashboard cracking due to sun exposure and heat, which is a cosmetic but widespread issue. Failures of HVAC blend door actuators can lead to inconsistent climate control and clicking noises from behind the dash. Oxygen sensors are also known to fail, triggering check engine lights and potentially affecting fuel efficiency.


Several recalls were issued for the 2003 FX35. These include NHTSA Recall 03V101000 concerning a potentially improperly sealed fuel filter cap, NHTSA Recall 04V053000 for a secondary hood latch mechanism that could bind, and NHTSA Recall 06V396000 regarding an incorrectly manufactured fuel filler tube that could crack and leak fuel. Critically, the 2003 FX35 is also affected by the extensive Takata airbag inflator recall for the passenger-side front airbag, and owners should verify if this vital safety recall has been addressed on any specific vehicle.


Overall, while the core engine and transmission are generally durable, long-term reliability concerns often shift to aging electrical components, suspension bushings, and interior components that degrade over two decades of use. Diligent maintenance and addressing recalls are crucial for maximizing its lifespan.

How long will the 2003 Infiniti FX35 last?

The 2003 Infiniti FX35, with diligent maintenance and proactive care, can achieve an impressive lifespan, often seeing 150,000 to 200,000 miles or more. Many owners report their vehicles serving reliably for 15+ years. Its long-term durability is largely attributed to the robust VQ35DE engine and the sturdy 5-speed automatic transmission, both known for their resilience when properly maintained, including regular oil changes and checks for oil consumption. The chassis itself is quite durable. However, weaknesses emerge over time: suspension components like bushings and shocks will inevitably wear, affecting ride quality and handling. Electrical components, such as power window motors and various sensors, are prone to failure. Interior materials, especially the dashboard, can suffer from sun-induced cracking, and leather seats show typical wear. Rust on the undercarriage and exhaust components becomes a concern in regions exposed to road salt.

What Technology & Safety Features are Included?

The 2003 Infiniti FX35, while an older model, boasted a respectable array of built-in technology, entertainment, and safety features for its time, with several optional upgrades that pushed its luxury appeal.


Built-in Tech & Entertainment: Standard features included automatic climate control and a capable 6-speaker audio system with a CD player. However, it was the optional features that truly stood out. Buyers could opt for a premium Bose 11-speaker audio system, a DVD-based navigation system, and perhaps most notably for 2003, Infiniti's innovative rearview monitor. This was one of the very first production vehicles to offer a factory-integrated camera display for backing up, a significant technological advancement at the time. An integrated garage door opener also added convenience.


Driver-Assistance: Basic cruise control was standard. While more advanced systems like Intelligent Cruise Control (ICC) were becoming available, they were often exclusive to the higher-trim FX45 or part of very specific, rare packages on the FX35.


Safety Features: Infiniti equipped the 2003 FX35 with a comprehensive suite of safety features as standard. These included dual-stage front airbags, front seat-mounted side-impact airbags, and roof-mounted curtain airbags providing head protection for both front and rear outboard occupants. Active safety was also robust, featuring 4-wheel Anti-lock Braking System (ABS) with Electronic Brake-force Distribution (EBD) and Brake Assist (BA). Furthermore, Vehicle Dynamic Control (VDC), Infiniti's stability control system, and a Traction Control System (TCS) were standard, offering enhanced control in challenging driving conditions. A Tire Pressure Monitoring System (TPMS) and front active head restraints were also included.


Crash-Test Ratings: The 2003 FX35 performed very well in crash tests for its era.


  • NHTSA (National Highway Traffic Safety Administration):

    • Frontal Crash Test: Received a perfect 5 Stars for both driver and passenger protection.

    • Side Impact Test: Also earned 5 Stars for both front and rear seat occupants.

    • Rollover Rating: The AWD model received 4 Stars.

  • IIHS (Insurance Institute for Highway Safety):

    • Moderate Overlap Front Test: Rated "Good," the highest possible rating.

    • Side Impact Test: The 2003 FX35 was not subjected to the IIHS side-impact test in this specific year.

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2003 Infiniti FX35 Prices and Market Value

When new in 2003, the Infiniti FX35 had a starting MSRP of approximately $34,300 for the Rear-Wheel Drive model and $35,800 for the All-Wheel Drive variant. Fully optioned, prices could climb into the low to mid-$40,000s. Fast forward two decades, and the vehicle has undergone significant depreciation, as expected for any luxury crossover of its age. Current used market prices (as of late 2023/early 2024) typically range from $2,000 to $4,000 for models in fair condition with higher mileage, to $4,000-$7,000 for well-maintained examples with average mileage. Exceptionally clean, low-mileage specimens can still fetch $7,000-$10,000 or more, though these are rare. Depreciation has largely bottomed out, meaning future value loss will be minimal unless major issues arise. Factors significantly affecting resale value include the overall cosmetic and mechanical condition, documented maintenance history, mileage, and the presence of desirable optional features like navigation or the Bose audio system. Undocumented issues or extensive rust can severely depress its value.

2003 Infiniti FX35 Cost of Ownership

Owning a 2003 Infiniti FX35 comes with mixed costs. Insurance rates are generally moderate to high for a luxury V6 crossover. Fuel costs are elevated due to its requirement for premium unleaded gasoline, and its 16-23 MPG fuel economy is not particularly efficient by today's standards. Maintenance can be more expensive than a non-luxury brand, with Infiniti-specific parts fetching higher prices. Repair costs, especially for major components or intricate electrical issues common with aging luxury vehicles, can be substantial, easily outweighing the low purchase price. Given its age and luxury designation, the 2003 FX35 is generally considered a costly vehicle to own long-term, better suited for owners who prioritize its unique characteristics and are prepared for potential repair investments.

2003 Infiniti FX35 Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity 23.80 gallons
City Mileage 16 miles/gallon
Highway Mileage 22 miles/gallon

2003 Infiniti FX35 Safety Rating

NHTSA
Side Driver Rating
Frontal Passenger Rating
Rollover Rating
Side Rear Passenger Rating
Frontal Driver Rating
IIHS
Rear Crash Protection/Head Restraint Ratings Marginal
Moderate Overlap Front Test Results Good
Side Impact Test Results Not Tested

2003 Infiniti FX35 Warranty

Basic
Original warranty 48 months / 60,000 miles
Estimated remaining Expired
Powertrain
Original warranty 72 months / 70,000 miles
Estimated remaining Expired
Rust
Original warranty 84 months / unlimited miles
Estimated remaining Expired

2003 Infiniti FX35 Insurance

Insurance for a 2003 Infiniti FX35 is moderately priced, reflecting its status as a Sport Utility Vehicle with strong safety ratings and
reasonable repair costs.

How Does the 2003 Infiniti FX35 Compare to Other Sport Utility Vehicle?

The 2003 Infiniti FX35 carved out a unique niche in the luxury crossover segment, standing against formidable rivals such as the Acura MDX, Lexus RX 300/330, BMW X5 (E53), and Mercedes-Benz ML-Class (W163). Each offered a different proposition.


  • Performance: The FX35, with its 280-hp VQ35DE V6, was significantly more performance-oriented than the Lexus RX 300/330, which prioritized comfort and smoothness over outright sportiness. It offered a more engaging and arguably quicker driving experience than the Acura MDX of the same era (around 240-260hp). Compared to the base BMW X5 3.0i (225hp I6) and Mercedes-Benz ML320 (215hp V6), the FX35 felt more athletic and offered better straight-line performance, aligning more with the dynamic spirit of the German brands' higher-tier V8 models, without the associated premium cost.

  • Features: The FX35 was well-equipped, especially with its pioneering optional rearview monitor and Bose audio system. While the Lexus RX offered a more plush, refined interior, the FX provided a more driver-focused cockpit. The Acura MDX offered similar practicality but with a less aggressive aesthetic. Against the Germans, Infiniti provided comparable luxury amenities at a more accessible price point, though perhaps lacking some of the perceived prestige.

  • Reliability: For core components like the engine and transmission, the FX35 generally holds up well. However, the Lexus RX series is often considered the benchmark for long-term reliability in this segment, with fewer reported issues. The Acura MDX also boasts a strong reputation for durability. The BMW X5 and Mercedes-Benz ML-Class of this vintage are typically more prone to complex and expensive electrical, suspension, and drivetrain problems as they age, making the FX35 a potentially less financially burdensome choice for long-term ownership than its German counterparts.

  • Price (Used): In the current used market, the FX35 often sits in a sweet spot, offering strong performance and distinctive styling at prices generally lower than comparable BMW X5s, and competitive with, or slightly below, the typically more "bulletproof" Lexus RX and Acura MDX models.

Recommendations for Alternatives:


  • If unquestionable reliability and plush comfort are top priorities, the Lexus RX 300/330 is an excellent, albeit less sporty, alternative.

  • For family-friendly practicality with strong reliability and good, but less aggressive, performance, the Acura MDX is a solid choice.

  • If you seek ultimate driving dynamics and prestige and are prepared for potentially significantly higher maintenance and repair costs, a BMW X5 (especially a V8 model) could be considered.

  • The 2003 FX35 remains a compelling buy for those who value its distinctive styling, strong V6 performance, and sporty handling and are willing to invest in its maintenance, as it offers a unique blend not easily found elsewhere in its price bracket.

Final Verdict: Is the 2003 Infiniti FX35 a Good Sport Utility Vehicle?

The 2003 Infiniti FX35 is an ideal vehicle for a very specific type of used car buyer: someone who values distinctive, aggressive styling and engaging, sports-car-like handling over ultimate practicality or luxury comfort. It's perfect for individuals or smaller families who want a "driver's SUV" and don't require vast rear cargo space or a plush ride. For those on a tight initial budget but with a healthy reserve for maintenance and repairs, it represents an exciting, premium experience at an affordable entry price.

Is it worth buying? Yes, but under strict conditions. It should only be considered as a used vehicle and never as a "set it and forget it" option. Prospective buyers should focus on well-maintained FX35 (V6) models, as they offer a better balance of performance and long-term costs than the FX45. A comprehensive pre-purchase inspection by an Infiniti specialist is non-negotiable, along with verifiable service records. Be prepared for ongoing costs, including premium fuel and potential repairs common to a 20-year-old luxury vehicle. If you embrace its unique character, understand its maintenance demands, and find a diligently cared-for example, the 2003 FX35 can still deliver a rewarding and stylish ownership experience.

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Cathleen V

Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.