2003 Infiniti Q45
US · Large Cars
The 2003 Infiniti Q45 is listed in the US market with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- 4.5L 8-cylinder
- Power
- Not available
- Torque
- Not available
- Transmission
- 5-speed automatic
- Drivetrain
- RWD
- Fuel
- Gasoline
- Seating
- Not available
Key Performance & Dimensions
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | 4.5L 8-cylinder | |
| Displacement | 4.5 L | |
| Cylinders | 8 | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Not available from our sources: Aspiration, Power, Torque.
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 5 | |
| Drivetrain | RWD | EPA fueleconomy.gov |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 18 mpg (13.1 L/100 km) | EPA fueleconomy.gov |
| City | 16 mpg (14.7 L/100 km) | |
| Highway | 22 mpg (10.7 L/100 km) |
Not available from our sources: Electric range, Battery capacity.
Trims and configurations
1 configuration listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
NHTSA lists 1 recall campaign for this model year. Last checked October 18, 2026.
12V079000: AIR BAGS:SIDE/WINDOW
NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2005 INFINITI Q45 VEHICLES. A WIRING CONNECTOR FOR THE SEAT MOUNTED AIRBAG MAY EXPERIENCE INCREASED ELECTRICAL RESISTANCE, RESULTING IN THE NON-DEPLOYMENT OF THE SIDE AIR BAGS.
Remedy: NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE WIRING CONNECTOR, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 19, 2012. OWNERS MAY CONTACT NISSAN CUSTOMER SERVICE AT 1-800-647-7261.
Reported February 28, 2012. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved October 18, 2026 · US Government public data
- NHTSA vPIC · retrieved October 18, 2026 · US Government public data
Source checked: October 18, 2026
Data verified: October 18, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Related vehicles
- 2002 Infiniti Q45
Gasoline
4.5L 8-cylinder · RWD
18 mpg (13.1 L/100 km) - 2004 Infiniti Q45
Gasoline
4.5L 8-cylinder · RWD
18 mpg (13.1 L/100 km)
Frequently asked questions
What engine does the 2003 Infiniti Q45 have?
4.5L 8-cylinder. Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2003 Infiniti Q45?
Combined fuel economy is 18 mpg (13.1 L/100 km), as published by the source shown in the specification table.
Is the 2003 Infiniti Q45 front-wheel, rear-wheel or all-wheel drive?
Drivetrain: RWD.
Are there recalls for the 2003 Infiniti Q45?
NHTSA lists 1 recall campaign for this model year (last checked October 18, 2026). Details are in the Recalls section.