2003 Infiniti Q45 Luxury
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Unverified
All photo credits
- Photo: Infiniti Q45 (F50) front by Tokumeigakarinoaoshima, CC0, via Wikimedia Commons
- Photo: 2005-2006 Infiniti Q45 -- 03-28-2012 by IFCAR, Public domain, via Wikimedia Commons
- Photo: 2004 Infiniti Q45 (8878411795) by Niels de Wit from Lunteren, The Netherlands, CC BY 2.0, via Wikimedia Commons
- Photo: Infiniti Q45 (F50), Bangladesh. (31962269794) by Shadman Samee from Dhaka, Bangladesh, CC BY-SA 2.0, via Wikimedia Commons
- Photo: 2003 Infiniti Q45 (4.5) V8 rear 10.27.18 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
The 2003 Infiniti Q45 Luxury is a 340-hp 4.5-liter V8 with a 5-speed automatic w/overdrive, learning algorithm, manual shift mode and rear-wheel drive. It starts at $52,000 MSRP and is rated at 18 mpg combined.
It makes 340 horsepower at 6,400 rpm and 333 lb-ft of torque at 4000 rpm, spinning to a 6,700 rpm redline. EPA fuel-economy estimates are 16 mpg city and 22 mpg highway (18 mpg combined).
The Q45 measures 199.6 inches long on a 113.0-inch wheelbase and has a curb weight of 3,977 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Sedan |
| Powertrain | Gas |
| Price | |
| MSRP | $52,000 ($91,848 *) |
| Engine | |
| Engine Type | VK45DE 4.5L DOHC V8 |
| Displacement | 4.5 L |
| Horsepower | 340 hp @ 6,400 rpm |
| Torque | 333 lb-ft @ 4000 rpm |
| Redline | 6,700 rpm |
| Valvetrain | DOHC, 4 valves/cylinder (32 total), Continuously Variable Valve Timing Control System (CVTCS), variable-length induction |
| Bore and Stroke | 93 x 82.7 mm |
| Compression Ratio | 10.5:1 |
| Injection Type | Electronic multi-port fuel injection (MPFi) |
| Drivetrain | |
| Drive Type | Rear-Wheel Drive |
| Transmission | |
| Transmission | 5-speed automatic w/overdrive, learning algorithm, manual shift mode |
| 1st Gear | 3.54 (48 mph **) |
| 2nd Gear | 2.26 (75 mph **) |
| 3rd Gear | 1.47 (116 mph **) |
| 4th Gear | 1 (170 mph **) |
| 5th Gear | 0.83 (205 mph **) |
| Reverse | 2.37 |
| Final Drive | 3.13 |
| Fuel Economy | |
| City | 16 MPG |
| Highway | 22 MPG |
| Combined | 18 MPG |
| Recommended Fuel | Premium unleaded gasoline |
| Suspension | |
| Front Suspension | Independent strut-type w/front strut tower bar, stabilizer bar |
| Rear Suspension | Independent multi-link, stabilizer bar |
| Brakes | |
| Front Brake Disc | 290mm vented disc |
| Rear Brake Disc | 292mm vented disc |
| Tires & Wheels | |
| Wheels Front | 17-inch aluminum-alloy |
| Wheels Rear | 17-inch aluminum-alloy |
| Tires Front | 225/55VR17 |
| Tires Rear | 225/55VR17 |
| Dimensions & Weight | |
| Length | 199.6 in |
| Width | 72.6 in |
| Height | 58.7 in |
| Wheelbase | 113 in |
| Front Track | 62.2 in |
| Rear Track | 61.4 in |
| Ground Clearance | 5.8 in |
| Cargo Volume | 13.6 ft³ |
| Curb Weight | 3,977 lbs |
| Weight Distribution (F/R) | 54% / 46% |
| Interior | |
| Headroom Front | 38.1 in |
| Headroom Rear | 36.4 in |
| Legroom Front | 44 in |
| Legroom Rear | 37.3 in |
| Shoulder Room Front | 58.2 in |
| Shoulder Room Rear | 57.2 in |
| Hip Room Front | 56.5 in |
| Hip Room Rear | 55 in |
Similar cars
Rivals to the 2003 Infiniti Q45 Luxury with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Tested, but no star ratings were published (2003 Infiniti Q45 4-DR. w/SAB).
Recalls
1 recall on file with NHTSA for the 2003 Infiniti Q45. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Feb 28, 2012 · 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.
Consequence: NON-DEPLOYMENT OF SIDE AIR BAGS COULD INCREASE THE RISK OF PERSONAL INJURY.
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.
NHTSA campaign 12V079000
14 owner complaints to NHTSA for the 2003 Infiniti Q45
Owner Complaints
14 owner complaints filed with NHTSA for the 2003 Infiniti Q45 (1 mention a crash, 1 an injury). See all on nhtsa.gov
| Engine | 6 |
| Electrical System | 3 |
| Steering | 3 |
| Electronic Stability Control (Esc) | 2 |
| Service Brakes | 2 |
| Electric | 1 |
Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2003 INFINITI Q45. US-market vehicles only; data cached for up to 7 days.