For 2003, the Q45 performance luxury sedan receives two dozen separate enhancements, all designed to bring even more excitement, luxury, convenience and style to the powerful INFINITI flagship. Though the new third generation was introduced as a 2002 model, the significant refinements for 2003 help give the Q a fresh new look and feel, keeping pace with the near total reinvigoration of the INFINITI product lineup. What remains unchanged is the Q45’s exhilarating driving experience from its innovative 340-horsepower 4.5-liter V8 engine, 4-wheel independent suspension and an enthusiast’s dream list of state-of-the-art technology. The 2003 Q45 also continues to offer dramatic exterior styling and a spacious, driver-oriented luxury interior. Highlights of the 2003 Q45 performance sedan include:
Body
- Avant-garde styling with dynamic and sporty forms
- Revised grille, headlight surrounds and rear finisher appearance
- Heated and auto dimming outside mirrors with memory and auto reverse tilt for right hand door mirror, puddle lights added to underside of mirrors
- New trunk auto close (pull down) function, standard full-size spare tire
- Seven-lens High Intensity Discharge (HID) xenon headlights – among the most powerful headlight systems in the world, with no separate fog lights needed
- All-steel unibody with a 40 percent increase in torsional rigidity
- Three new exterior colors – Emerald Mist, Brilliant Silver and Golden Sand
Engine and Driveline
- 32-valve 4.5-liter DOHC V8 producing 340 horsepower and 333 lb-ft of torque, now certified as Low Emissions Vehicle (LEV)
- Modular cylinder head design, lightweight pistons, titanium valves, continuously variable valve timing, variable length induction system
- 5-speed electronically controlled automatic transmission with manual shift mode
- New higher numerical final drive gear ratio (3.133:1) for better acceleration feel
- Vehicle Dynamic Control (VDC) for improved stability
- Electronic Torque-Demand Powertrain Control System optimizes smoothness and performance
Suspension, Steering and Braking
- 4-wheel independent suspension with independent strut front suspension with front strut tower bar, stabilizer bar, multi-link rear suspension design with stabilizer bar
- Standard 17-inch alloy wheels and P225/55VR17 tires, available run-flat tires and 18-inch alloy wheels with titanium tint and P245/45VR18 tires and available chrome-finish wheels
- Standard tire pressure monitor
- 4-wheel vented disc brakes with 4-wheel Anti-lock Braking System (ABS), Brake Assist (BA) and Electronic Brake force Distribution (EBD)
- Variable vehicle speed-sensitive power-assisted rack-and-pinion steering
Interior Features
- Contemporary, comfortable interior design with driver-oriented instrument panel and controls, dual zone heating and cooling, INFINITI signature analog clock, embroidered INFINITI logo on front seat backs
- Standard heated front seats
- New available climate controlled seats for driver and front passenger with cooling and heating functions, standard on Premium Model
- Available satellite radio (choice of XM or Sirius), standard on Premium Model
- Vehicle Information System with center multi-function 7.0-inch LCD screen with optional DVD-driven INFINITI Navigation System and rear-view monitor (5.8-inch without navigation system)
- Premium 300-watt digital Bose® audio system with 8 speakers, Bose AudioPilot™ Noise Compensation Circuit Technology, new center-cluster location of 6-disc slot-type CD changer
- Voice Recognition System featuring Visteon Voice Technology™
- Standard electronic compass in rearview mirror
- Available power-operated heated rear seat, rear A/C and audio controls, standard on Premium Model
- Available power rear window sunshade and manual rear door window sunshades, standard on Premium Model
Safety and Security
- Dual-stage front air bags with seat belt sensors, front seat side-impact supplemental air bags
- Supplemental side-impact curtain air bags for head and chest protection
- LATCH rigid bar child seat anchorage system (Lower Anchors and Tethers for CHildren)
- Front seat active head restraints, new rear seat center head restraint with two-way manual adjustment
- Available laser-based Intelligent Cruise Control
Manufacturing
- Exterior and interior designed at Nissan Technical Center (NTC) in Atsugi, Japan
- Assembled by Nissan Motor Co., Ltd. at Tochigi, Japan
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