Infiniti FX45 2003-2008 Specifications
Complete technical specifications and performance data for the Infiniti FX45 2003-2008. Includes detailed engine specifications, dimensions, safety features, and more.
Engine Specifications
Engine
- Type
- V8 DOHC 32-valve
- Displacement
- 4.5L (4494 cc)
- Power
- 315 hp @ 6,400 rpm
- Torque
- 329 lb-ft @ 4,000 rpm
- Compression Ratio
- 10.5:1
- Redline
- 6,800 rpm
Transmission Specifications
Transmission
- Type
- 5-Speed Automatic with Manual Shift Mode
- Drive System
- All-Wheel Drive (AWD)
- Final Drive
- 3.538:1
Dimensions Specifications
Primary Dimensions
- Length
- 189.3 inches
- Width
- 73.0 inches
- Height
- 66.3 inches
- Wheelbase
- 112.2 inches
- Ground Clearance
- 7.3 inches
- Curb Weight
- 4,654 lbs
Chassis & Suspension
- Front Suspension
- Independent double-wishbone with coil springs
- Rear Suspension
- Independent multi-link with coil springs
- Steering
- Vehicle-speed-sensitive power-assisted rack-and-pinion
- Front Brakes
- 13.0-inch ventilated disc
Performance & Fuel Economy
- Zero To 60
- 5.6 seconds
- Quarter Mile
- 14.1 seconds @ 99.5 mph
- Top Speed
- 149 mph electronically limited
- Combined
- 16 mpg
Safety Specifications
- Front
- Dual-stage, dual-threshold front airbags
- Side
- Front seat-mounted side-impact airbags
- Curtain
- Roof-mounted side curtain airbags with rollover sensor
- Other
- Driver's knee airbag
- Stability Control
- Vehicle Dynamic Control (VDC) with Traction Control System (TCS)
- Brake Systems
- ABS with EBD and Brake Assist
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the main differences between the available engine options?
What are the main differences between the available engine options?
The 2003-2008 Infiniti FX45 is equipped with a single engine option: a 4.5-liter V8 producing 315 horsepower and 329 lb-ft of torque. This engine is paired with a 5-speed automatic transmission, offering robust performance and smooth acceleration.
Q2 What transmission options are available?
What transmission options are available?
The FX45 comes exclusively with a 5-speed automatic transmission, featuring adaptive shift control and manual mode for enhanced driving dynamics.
Q3 What are the key safety features?
What are the key safety features?
Standard safety features include dual front airbags, side-impact airbags, ABS, electronic brake-force distribution, and vehicle dynamic control. Optional features include a tire pressure monitoring system and a rearview camera.
Q4 How does the fuel economy compare to competitors?
How does the fuel economy compare to competitors?
The FX45 has an EPA-estimated fuel economy of 14 mpg city and 19 mpg highway, which is competitive with other luxury SUVs of its era, such as the BMW X5 and Mercedes-Benz ML500.
Q5 What are the recommended maintenance intervals?
What are the recommended maintenance intervals?
Recommended maintenance includes oil changes every 3,750 miles, tire rotation every 7,500 miles, and a comprehensive inspection every 15,000 miles. Always refer to the owner's manual for specific intervals.
Q6 What are the most notable features and options?
What are the most notable features and options?
Standard features include leather upholstery, power-adjustable front seats, a Bose audio system, and a sunroof. Optional features include a navigation system, adaptive cruise control, and a premium sound system.
Q7 How does the cargo and passenger space compare to competitors?
How does the cargo and passenger space compare to competitors?
The FX45 offers 64.5 cubic feet of cargo space with the rear seats folded, which is comparable to the BMW X5 and slightly less than the Mercedes-Benz ML500. Passenger space is generous, with ample legroom in both rows.
Q8 What are the towing and payload capacities?
What are the towing and payload capacities?
The FX45 has a maximum towing capacity of 3,500 pounds and a payload capacity of 1,120 pounds, making it suitable for light towing and hauling tasks.
About the Author
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Alan Montanye
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