2003 Infiniti FX FX45 AWD
The 2003 Infiniti FX FX45 AWD is a 315-hp 4.5-liter V8 with a 5-speed automatic w/overdrive, manual shift mode and all-wheel drive. It starts at $44,225 MSRP and is rated at 15 mpg combined.
It makes 315 horsepower at 6,400 rpm and 329 lb-ft of torque at 4000 rpm. EPA fuel-economy estimates are 13 mpg city and 18 mpg highway (15 mpg combined).
The FX measures 189.1 inches long on a 112.2-inch wheelbase and has a curb weight of 4,299 lb.
| Spec | Value |
|---|---|
| Price | |
| MSRP | $44,225 ($78,115 *) |
| Engine | |
| Engine Type | VK45DE 4.5L DOHC V8 |
| Displacement | 4.5 L |
| Horsepower | 315 hp @ 6,400 rpm |
| Torque | 329 lb-ft @ 4000 rpm |
| Valvetrain | DOHC, 32 valves (4/cylinder), titanium valves, CVTCS, variable-length induction |
| Drivetrain | |
| Drive Type | All-Wheel Drive (ATTESA E-TS) |
| Transmission | |
| Transmission | 5-speed automatic w/overdrive, manual shift mode |
| 1st Gear | 3.54 |
| 2nd Gear | 2.26 |
| 3rd Gear | 1.47 |
| 4th Gear | 1 |
| 5th Gear | 0.83 |
| Reverse | 2.37 |
| Final Drive | 3.69 |
| Fuel Economy | |
| City | 13 MPG |
| Highway | 18 MPG |
| Combined | 15 MPG |
| Recommended Fuel | Premium unleaded gasoline |
| Suspension | |
| Front Suspension | Independent strut-type, aluminum-alloy components, High Frequency Control shocks w/Rebound Spring |
| Rear Suspension | Independent multi-link, aluminum-alloy components, High Frequency Control shocks w/Rebound Spring |
| Front Stabilizer Bar | Yes (large diameter) |
| Rear Stabilizer Bar | Yes (large diameter) |
| Tires & Wheels | |
| Wheels Front | 20-inch 8-spoke aluminum-alloy |
| Wheels Rear | 20-inch 8-spoke aluminum-alloy |
| Tires Front | P265/50R20 |
| Tires Rear | P265/50R20 |
| Dimensions & Weight | |
| Length | 189.1 in |
| Width | 75.8 in |
| Height | 65 in |
| Wheelbase | 112.2 in |
| Front Track | 62.7 in |
| Rear Track | 64.6 in |
| Ground Clearance | 7.6 in |
| Cargo Volume | 27.4 ft³ |
| Curb Weight | 4,299 lbs |
| Weight Distribution (F/R) | 54% / 46% |
| Interior | |
| Headroom Front | 40.8 in |
| Headroom Rear | 39.5 in |
| Legroom Front | 43.9 in |
| Legroom Rear | 35.2 in |
| Shoulder Room Front | 56.9 in |
| Shoulder Room Rear | 57.4 in |
| Hip Room Front | 54.3 in |
| Hip Room Rear | 55 in |
* Amount adjusted for inflation to 2026 dollars