2003 INFINITI Q45

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$188–$7,656 Inventory Prices
(4.9) 7 reviews
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Key Specs

of the 2003 INFINITI Q45. Base trim shown.

  • Body Type:
  • Combined MPG:
    20 Combined MPG
  • Engine:
    340-hp, 4.5-liter V-8 (premium)
  • Drivetrain:
    Rear-wheel Drive
  • Transmission:
    5-speed automatic w/OD and auto-manual
  • View more specs

2003 INFINITI Q45 Overview

By Cars.com Editors
Vehicle Overview
Following a major redesign last year, changes are more modest in 2003 for Infiniti’s flagship sedan, even though the automaker claims that more than 24 enhancements have been made. A revised grille, headlight surrounds and a rear finisher give the Q45 sedan what Infiniti calls a “fresh look and feel.” A new trunk pull-down feature that automatically closes the trunk lid is standard. Climate-controlled front seats are newly available and come standard on the Premium model. An XM or Sirius Satellite Radio can be installed, and the trunk holds a full-size spare tire.

The current Q45 is still equipped with rear-wheel drive. The sedan reaches closer to the model’s beginning, as a 1990 model, by displaying an elegant persona that some observers felt was absent from the second-generation sedan.

Exterior
Riding a 113-inch wheelbase, the Q45 is 199.6 inches long overall. Last year’s reshaping of the sculpted-profile body made it more aerodynamically efficient. A large, titanium-colored grille is framed by the integrated front bumper and fascia and features a prominent Infiniti badge. Large taillights sit past a raised rear deck. Large high-intensity-discharge headlights have seven individual lenses and a free-surface reflector. Heated, automatic-dimming outside mirrors include a memory feature and integral turn signals.

Standard aluminum wheels hold P225/55VR17 tires, but run-flat and 18-inch tires are optional. A low-tire-pressure monitoring ...
Vehicle Overview
Following a major redesign last year, changes are more modest in 2003 for Infiniti’s flagship sedan, even though the automaker claims that more than 24 enhancements have been made. A revised grille, headlight surrounds and a rear finisher give the Q45 sedan what Infiniti calls a “fresh look and feel.” A new trunk pull-down feature that automatically closes the trunk lid is standard. Climate-controlled front seats are newly available and come standard on the Premium model. An XM or Sirius Satellite Radio can be installed, and the trunk holds a full-size spare tire.

The current Q45 is still equipped with rear-wheel drive. The sedan reaches closer to the model’s beginning, as a 1990 model, by displaying an elegant persona that some observers felt was absent from the second-generation sedan.

Exterior
Riding a 113-inch wheelbase, the Q45 is 199.6 inches long overall. Last year’s reshaping of the sculpted-profile body made it more aerodynamically efficient. A large, titanium-colored grille is framed by the integrated front bumper and fascia and features a prominent Infiniti badge. Large taillights sit past a raised rear deck. Large high-intensity-discharge headlights have seven individual lenses and a free-surface reflector. Heated, automatic-dimming outside mirrors include a memory feature and integral turn signals.

Standard aluminum wheels hold P225/55VR17 tires, but run-flat and 18-inch tires are optional. A low-tire-pressure monitoring system is standard. The Q45’s power rack-and-pinion steering is speed-sensitive.

Interior
Soft leather and genuine Bird’s Eye Maple highlight the five-passenger interior. The driver faces a hand-stitched leather and wood steering wheel and electroluminescent round instruments. A power rear-window sunshade and manual sunshades for the rear-door windows are optional. Available power rear seats have an adjustable backrest angle.

The Vehicle Information System has a 7-inch LCD screen, which comes with a 5.8-inch screen when the optional 3-D navigation system is not installed. Other options include radar-based Adaptive Cruise Control and a rearview monitor system that uses the LCD screen to display an image of the area in back of the car when it’s backing up.

Under the Hood
The 4.5-liter V-8 engine develops 340 horsepower. A variable-length air induction system and continuously variable valve timing control boost engine efficiency. A five-speed-automatic transmission incorporates a manual-shifting mode. Infiniti claims a 0-to-60-mph acceleration time of about 5.9 seconds for the Q45.

Safety
Standard features include vented antilock disc brakes, rear child-safety seat tether anchors, side-impact airbags and active head restraints for the front seats. Side curtain-type airbags that deploy from the roof for head protection are also standard. A Vehicle Dynamic Control system governs brake pressure and engine torque automatically on slippery surfaces or in demanding maneuvers.

Driving Impressions
The elegance of the first Q45 is back with a vengeance and is augmented by sterling performance and satisfying handling traits. The Q45 is exceptionally easy to drive for a big car, and it’s also fun to maneuver. Acceleration reaches beyond energetic as the V-8 delivers its hefty output in an utterly civilized manner, while maintaining refined noise levels.

The Q45 steers with a somewhat light touch, and it offers excellent feel and feedback by grasping the pavement tenaciously through curves. As for the Q45’s ride comfort, the Infiniti suspension basically nudges aside nearly all imperfections; even deep potholes are dealt with handily.

Lushly cushioned yet highly supportive seats are covered with fine leather. The driver’s headroom is acceptable but not huge, and elbowroom and legroom are abundant.

 
Reported by Jim Flammang  for cars.com
From the cars.com 2003 Buying Guide
Posted on 11/20/2002

Latest 2003 Q45 Stories

What Drivers Are Saying

Exterior Styling
(4.6)
Performance
(4.6)
Interior Design
(4.9)
Comfort
(4.9)
Reliability
(4.9)
Value For The Money
(4.9)

Latest Reviews

(4.0)

Good car when it was running right.

by Sam from Lake Havasu City Az.86404 on June 19, 2018

Liked this car till it started to overheat. Might just be a thermostat. Not sure and it needs a new battery. Other than that nice car if you fix it up. This car sold for $55.000 new not that it matter ... Read full review

(5.0)

Luxurious, powerful V-8 rear-wheel drive

by Baby Mikey on June 12, 2017

Luxurious, powerful, comfortable, well-optioned sedan. Very smooth ride, large trunk makes it a great touring car so nice you feel guilty driving around town every day to do errands. Close the doors ... Read full review

Safety & Recalls

Recalls

The 2003 INFINITI Q45 currently has 0 recalls

Crash and Rollover Test Ratings

The 2003 INFINITI Q45 has not been tested.

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Cars.com Car Seat Check

Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The Q45 received the following grades on a scale of A-F.*
* This score may not apply to all trims, especially for vehicles with multiple body styles that affect the space and design of the seating.

Warranty FAQs

What is a Bumper-to-Bumper warranty?

Often called a basic warranty or new-vehicle warranty, a bumper-to-bumper policy covers components like air conditioning, audio systems, vehicle sensors, fuel systems and major electrical components. Most policies exclude regular maintenance like fluid top offs and oil changes, but a few brands have separate free-maintenance provisions, and those that do offer them is slowly rising. Bumper-to-bumper warranties typically expire faster than powertrain warranties.

What is a Powertrain warranty?

Don't be misled a 10-year or 100,000-mile powertrain warranty doesn't promise a decade of free repairs for your car. It typically covers just the engine and transmission, along with any other moving parts that lead to the wheels, like the driveshaft and constant velocity joints. Some automakers also bundle seat belts and airbags into their powertrain warranties. With a few exceptions, powertrain warranties don't cover regular maintenance like engine tuneups and tire rotations.

What is included in Roadside Assistance?

Some automakers include roadside assistance with their bumper-to-bumper or powertrain warranties, while others have separate policies. These programs cover anything from flat-tire changes and locksmith services to jump-starts and towing. Few reimburse incidental costs like motel rooms (if you have to wait for repairs).

What other services could be included in a warranty?

Some automakers include free scheduled maintenance for items such as oil changes, air filters and tire rotations. Some include consumables including brake pads and windshield wipers; others do not. They are typically for the first couple of years of ownership of a new car.

What does CPO mean?

A certified pre-owned or CPO car has been inspected to meet minimum quality standards and typically includes some type of warranty. While dealers and third parties certify cars, the gold standard is an automaker-certified vehicle that provides a factory-backed warranty, often extending the original coverage. Vehicles must be in excellent condition and have low miles and wear to be certified, which is why off-lease vehicles feed many CPO programs.

See also the latest CPO incentives by automaker