Infiniti M45 2003-2004 Specifications
Complete technical specifications and performance data for the Infiniti M45 2003-2004. Includes detailed engine specifications, dimensions, safety features, and more.
Engine Specifications
Engine
- Type
- V8 DOHC 32-valve
- Displacement
- 4.5L (4494 cc)
- Power
- 340 hp @ 6,400 rpm
- Torque
- 333 lb-ft @ 4,000 rpm
- Compression Ratio
- 10.5:1
- Redline
- 6,800 rpm
Transmission Specifications
Transmission
- Type
- 5-Speed Automatic with Manual Mode
- Drive System
- Rear-Wheel Drive (RWD)
- Final Drive
- 3.133:1
Dimensions Specifications
Primary Dimensions
- Length
- 196.9 inches
- Width
- 72.0 inches
- Height
- 58.3 inches
- Wheelbase
- 110.2 inches
- Ground Clearance
- 5.7 inches
- Curb Weight
- 3,902 lbs
Chassis & Suspension
- Front Suspension
- Independent multi-link with coil springs
- Rear Suspension
- Independent multi-link with coil springs
- Steering
- Vehicle-speed-sensitive power-assisted rack-and-pinion
- Front Brakes
- 12.6-inch ventilated disc
Performance & Fuel Economy
- Zero To 60
- 5.9 seconds
- Quarter Mile
- 14.3 seconds @ 98.0 mph
- Top Speed
- 155 mph electronically limited
- Combined
- 18 mpg
Safety Specifications
- Front
- Dual-stage, dual-threshold front airbags
- Side
- Front side-impact airbags
- Curtain
- Side curtain airbags with rollover sensor
- Other
- Driver's knee airbag
- Stability Control
- Vehicle Dynamic Control (VDC) with traction control
- 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 2003-2004 Infiniti M45 is equipped with a single engine option: a 4.5L V8 producing 340 horsepower and 333 lb-ft of torque. This engine is paired with a 5-speed automatic transmission, offering smooth and responsive performance.
Q2 What transmission options are available?
What transmission options are available?
The 2003-2004 Infiniti M45 comes exclusively with a 5-speed automatic transmission, featuring Adaptive Shift Control (ASC) for optimized gear shifts based on driving conditions.
Q3 What are the key safety features?
What are the key safety features?
Standard safety features include dual front airbags, side-impact airbags, anti-lock braking system (ABS), electronic brake-force distribution (EBD), and vehicle dynamic control (VDC). Optional features include a rearview camera and tire pressure monitoring system (TPMS).
Q4 How does the fuel economy compare to competitors?
How does the fuel economy compare to competitors?
The 2003-2004 Infiniti M45 has an EPA-estimated fuel economy of 17 mpg city and 23 mpg highway, which is competitive with other luxury sedans of its class, such as the BMW 5 Series and Lexus GS.
Q5 What are the recommended maintenance intervals?
What are the recommended maintenance intervals?
Recommended maintenance intervals include oil changes every 3,750 miles or 3 months, tire rotations every 7,500 miles, and comprehensive inspections every 15,000 miles.
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, dual-zone automatic climate control, and a Bose audio system. Optional features include a navigation system, rearview camera, and power rear sunshade.
Q7 How does the cargo and passenger space compare to competitors?
How does the cargo and passenger space compare to competitors?
The 2003-2004 Infiniti M45 offers 13.5 cubic feet of trunk space and seating for five. This is comparable to competitors like the BMW 5 Series and Mercedes-Benz E-Class.
Q8 What are the towing and payload capacities?
What are the towing and payload capacities?
The 2003-2004 Infiniti M45 is not rated for towing. Its payload capacity is approximately 850 lbs, depending on passenger and cargo load.
About the Author
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Alan Montanye
Automotive Technical Writer
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