CARCARETOOL VEHICLE GUIDE

Infiniti FX50S

Infiniti FX50S — 2003–2017, 5-door suv. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.

About the Infiniti FX50S

Infiniti FX50S is a 5-door SUV in the mid-size luxury crossover suv class, with source data covering 2003–2017. The guide brings together the vehicle information currently available for this model and a Front-engine, rear-wheel-driveFront-engine, four-wheel-drive layout. Public source material describes the model in the context of its design, market positioning and vehicle history.

This guide is designed to answer practical questions about the Infiniti FX50S, including its specifications, engine, fuel economy, tires, maintenance and ownership details.

Infiniti FX50S specifications at a glance

Use this table for the model-level essentials. Exact figures may vary by year, trim, engine and market.

Make	Infiniti
Model	FX50S
Model years	2003–2017
Body style	5-door SUV
Vehicle class	Mid-size luxury crossover SUV
Manufacturer	Nissan
Production	2002–2013 (FX); 2013–2019 (QX70)
Market / country	NL, NZ

Engine, transmission and performance

The available source data does not identify a single engine configuration for every Infiniti FX50S variant.. The listed drivetrain/layout is Front-engine, rear-wheel-driveFront-engine, four-wheel-drive.

Drivetrain / layout	Front-engine, rear-wheel-driveFront-engine, four-wheel-drive

Infiniti FX50S other specifications

Name	Infiniti FX/QX70
Image	INFINITI FX50S.jpg
Caption	Infiniti FX50S (S51)
Aka	Infiniti FX (2002–2013)

Infiniti FX50S generations and model years

Where a source covers multiple generations, CarCareTool selects the generation(s) that best match this catalog model instead of mixing unrelated variants.

Generation / scope	Years	Engine	Transmission	Drivetrain
Infiniti FX/QX70	2003–2017	Not specified	Not specified	Front-engine, rear-wheel-driveFront-engine, four-wheel-drive

Infiniti FX50S features and equipment

Features shown below are tied to the available source material for this model. Equipment can vary by year, trim and market.

Standard or documented features

✓The FX35 is available in two drivetrains, the RWD and the AWD, which are both fitted to a dual overhead cam 3.5-liter 24-valve V6 VQ35DE gasoline engine, with aluminum-alloy block and heads, electronically controlled throttle system, and low-friction molybdenum-coated pistons that makes use of the continuous variable valve timing which in part optimizes the opening of intake valves

✓This is also coupled with an electronically controlled super-wide ratio five-speed automatic with a manumatic shift mode that includes the option of sequentially selected manual gearshifts and downshift rev-matching

✓The second-generation 2002 FX45 Concept was introduced in January 2002 at the NAIAS as a thinly-veiled production FX (S50) and planned production was announced for early 2003

✓In addition to LDW, the 2005 FX range was now equipped with standard roof-mounted curtain supplemental curtain airbags with rollover protection for front and rear outboard seat occupants

✓Many previously optional features were made standard, including the 300-watt Bose audio system

✓RearView Monitor, 7-inch color display, Advanced Air Bag System (AABS)

✓leather seating surfaces with heated front seats, ten-way power driver's seat with power lumbar support and eight-way power passenger's seat

✓The FX45 featured additional upgrades, including new 20-inch wheels

✓leather seats, a revised sport-tuned four-wheel independent suspension with new dampers, a Bluetooth system, and the Premium Package became standard

TIRE PRESSURE

Recommended tire pressure for Infiniti FX50S

Check the vehicle placard or owner’s manual for the manufacturer’s cold inflation pressure. CarCareTool estimates are clearly labelled when an exact verified value is unavailable.

Normal load32 PSI front30 PSI rear

Fully loaded34 PSI front33 PSI rear

Load condition	Front	Rear	Status
Normal	32 PSI	30 PSI	Estimate
Fully loaded	34 PSI	33 PSI	Estimate

Calculate how much air to add

Frequently asked questions about Infiniti FX50S

These FAQs are generated automatically for this specific vehicle from the specifications, features and ownership data available in CarCareTool. Questions are selected by relevance so the page focuses on details that can actually be answered for this model.

What tire pressure should I use for the Infiniti FX50S?

For the correct setting, use the cold inflation pressure on the vehicle placard or in the owner’s manual. When CarCareTool does not have a verified configuration-specific value, its starting estimate is 32 PSI front and 30 PSI rear for normal load. This is an estimate, not an OEM recommendation.

What is the best engine oil for the Infiniti FX50S?

There is no single best engine oil for every Infiniti FX50S configuration. Use the viscosity grade and manufacturer approval specified for the exact engine in the owner’s manual.

What body style is the Infiniti FX50S?

The Infiniti FX50S is classified as a 5-door SUV.

What years was the Infiniti FX50S produced?

The available vehicle record places the Infiniti FX50S in the 2003–2017 period. Exact availability can vary by market.

Is the Infiniti FX50S FWD, RWD or AWD?

The listed drivetrain/layout for the Infiniti FX50S is Front-engine, rear-wheel-driveFront-engine, four-wheel-drive.

Who makes the Infiniti FX50S?

The manufacturer listed for the Infiniti FX50S is Nissan.

When was the Infiniti FX50S produced?

The available source data describes production as 2002–2013 (FX); 2013–2019 (QX70).

What class of car is the Infiniti FX50S?

The Infiniti FX50S is listed in the Mid-size luxury crossover SUV class.

What platform does the Infiniti FX50S use?

The available source data lists the platform/chassis as Nissan FM platform.

Which markets or countries sold the Infiniti FX50S?

The CarCareTool catalog currently associates the Infiniti FX50S with NL, NZ. Market availability and specifications can differ.

What came after the Infiniti FX50S?

The available vehicle data lists Infiniti QX65 as a successor where applicable.

What replaced the Infiniti FX50S?

The available vehicle data lists Infiniti QX65 as the successor where applicable.

How often should I check the tire pressure on the Infiniti FX50S?

Check the tires regularly and before long trips, with the tires cold. Use the vehicle placard or owner’s manual as the source of the manufacturer’s recommended pressure.

Should I use the tire sidewall pressure for the Infiniti FX50S?

No. The maximum pressure printed on the tire sidewall is not automatically the vehicle’s recommended setting. Use the vehicle placard or owner’s manual for the correct cold inflation pressure.

Does the recommended tire pressure change when the Infiniti FX50S is fully loaded?

It can. Many vehicles specify a different cold pressure for heavier loads. Check the vehicle placard or owner’s manual for the exact loading condition.

Can the Infiniti FX50S have different tire pressures front and rear?

Yes. Some vehicles specify different front and rear pressures because axle loads and vehicle configurations differ. Follow the exact vehicle recommendation where available.

Why can mileage differ from the published figure for the Infiniti FX50S?

Published fuel economy is measured under a defined test method. Real-world mileage can vary with traffic, speed, temperature, tire pressure, payload, maintenance and driving style.

Data sources and verification are available in the page editor; exact specifications can vary by year, market, trim and engine.

Infiniti FX50S images

Vehicle images are shown from the stored source image records when available.