2005 Infiniti Q45

  • 2005 Infiniti Q45 Base Sedan

    Base Sedan

    • MAX MPG
    • SEATS
    • ENGINE
      4.5L V8
    • MSRP
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2005 Infiniti Q45 Review

An affordable car with plenty of luxury perks and amazing drivability.

Reviewed by Automotive on


When the 2005 Infiniti Q45 premiered at the New York International Auto Show, the manufacturer called it a redefined premium luxury sedan. That description certainly proves true, as the 2005 Q45 maintains the high standards of its predecessors but still gets a multitude of upgrades to make it stand out among its competitors. The Infiniti Q45 definitely deserves a look if an owner needs full-size space matched with a powerful engine and plenty of luxurious features, all for a very reasonable price.

The Range

Body Styles: full-size sedan
Engines: 4.5-liter V-8
Transmissions: five-speed automatic
Models: Infiniti Q45

What's New

The Infiniti Q45 gets several important updates and restyling for the 2005 model year. The exterior face-lift includes new front and rear fasciae, a new hood, newly designed headlights with integrated foglamps, a new trunk deck lid, LED taillights, and a stylish, fine-line chrome trim. Rather than having separate models, the 2005 Q45 sells only as a base model with all the standard equipment of the former Luxury model and an optional Premium Package. The interior of the car features a new sport contour look that includes double-stitched seats, a new instrument panel, a metal-trimmed shifter bezel, metal knobs, and accents made of dark maple wood and chrome. The transmission comes recalibrated for a better response, and the performance-tuned active dampening suspension comes standard on all models.


The exterior design of the 2005 Infiniti Q45 gets a rather intense makeover for the model year. The inclusion of newer and bolder features makes the exterior stand out more than previous models. The appearance certainly looks more distinctive and slightly more aggressive as if to signal to onlookers the high-class performance hidden under the hood. Two new metallic exterior colors are available for the 2005 Q45 as well. The Premium Package adds 18-inch, seven-spoke alloy wheels with all-season performance tires and the option to upgrade to seven-spoke, chrome-plated wheels.

The Q45’s exterior features several technology-based perks. The heated mirrors have a useful memory function and a selectable tilt-down feature when the car moves in reverse. Also, the driver's mirror dims automatically. The Q45’s seven-lens, high-intensity discharge lights remain some of the most powerful in the world.


The Q45 has a maximum occupancy of five, and those five people sit wrapped in a realm of luxury. Sport-contour double-stitched seats, a pure white gauge cluster, and a metal-trimmed gearshift bezel really spice things up. Meanwhile, the dark maple wood and chrome-trim accents add a touch of elegance. Heated front seats come standard with cool front seats as an option. Tech-savvy features reign supreme in the cabin. The 2005 Q45 features a 300-watt Bose audio system with eight speakers, an in-dash six-CD changer, and the choice of either XM or Sirius Satellite Radio. Also, it features a DVD-based navigation system with a seven-inch screen and a rear-view monitor that provides a view of the area behind the car when backing up.

The Premium Package adds climate-controlled front seats, power reclining rear seats with seat heaters, rear-seat audio and climate controls, and rear sunshades.

Performance & Handling

All 2005 Infiniti Q45 models draw power from a strong and fast 4.5-liter, V-8 engine that produces 340 horsepower and 333 lb-ft of torque. The only transmission option remains a five-speed automatic. Handling feels smooth and agile thanks to the foundation of the car itself, and tight turning for a full-size car proves helpful when parking.


The 2005 Q45 offers extensive safety features. Anti-lock brakes have vented discs, electronic brake force distribution, and brake assist to help during emergency braking. The front seats have active head restraints, and Vehicle Dynamic Control helps improve stability. Seat-mounted side-impact airbags match with side curtain airbags in the standard package. New for 2005, Nissan incorporates pre-crash seat belts, which tighten during emergency braking.

EPA Fuel Economy

Infiniti Q45: 16/22 mpg city/highway

You'll Like

  • Luxurious amenities
  • Affordability
  • Strong V-8 engine

You Won't Like

  • Complex interior controls
  • Small trunk capacity

Sum Up

An affordable car with plenty of luxury perks and amazing drivability.

If You Like This Vehicle

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