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Key specs

Base trim shown

  • Body style not available

  • Combined mpg not available

  • Seating not available

  • Length not available, Height not available

  • Drivetrain not available


The good:

  • Acceleration
  • Maneuverability
  • Ride comfort
  • Seat comfort
  • Luxury amenities

The bad:

  • Slippery-weather traction
  • Fuel economy
  • Price

1 trim

Starting msrp listed lowest to highest price

Wondering which trim is right for you?

Our 2006 INFINITI Q45 trim comparison will help you decide.

Notable features

  • RearView Monitor and video camera
  • 340-hp V-8
  • Revised five-speed automatic
  • Available intelligent cruise control
  • New Sport model for 2006

2006 INFINITI Q45 review: Our expert's take

Vehicle Overview
The full-size rear-wheel-drive Q45 serves as Infiniti’s flagship sedan. A new Sport model with Rear Active Steer, a sport suspension and 19-inch wheels emerges for the 2006 season. Rear Active Steer adjusts rear-suspension geometry according to steering input and vehicle speed. A Bluetooth-based hands-free phone system is standard, and Infiniti’s Lane Departure Warning system has been added to the available Premium Package. The modified five-speed-automatic transmission has wider gear spacing and rev matching.

For 2005, the Q45 adopted new front and rear fascias, a restyled hood and grille, new headlights and a different deck lid. LED taillamps are installed, and the body is adorned with chrome trim.

The heated mirrors have a memory function and a selectable tilt-down feature when in Reverse gear. The trunk lid can open and close automatically.

The Q45’s seven-lens high-intensity-discharge headlights are among the most powerful installed in a passenger car. Alloy wheels hold 17-inch tires on the base model; titanium-finish 19-inch wheels are mounted on the Sport sedan. A tire-pressure-monitoring system is standard, and run-flat tires are optional. Built on a 113-inch wheelbase, the Q45 is 200.8 inches long overall, 58.7 inches tall and 72.6 inches wide.

The Q45 seats five occupants. Sport contour double-stitched seats, a pure white gauge cluster and a metal gearshift bezel are installed. Dark maple wood and chrome accents decorate the interior. The DVD-based navigation system has a 7-inch screen and a RearView Monitor that provides a view of the area behind the car when backing up.

Heated front seats are standard; cooled seats are optional. Power heated rear seats are included in a Premium Package. The 300-watt Bose audio system has eight speakers, an in-dash six-CD changer and a cassette player. Either XM or Sirius Satellite Radio is available. A power rear-window sunshade and manual rear-door window sunshades can be installed. Intelligent cruise control with preview braking is also available.

Under the Hood
Infiniti’s 4.5-liter V-8 develops 340 horsepower and 333 pounds-feet of torque. It works with a five-speed-automatic transmission that has a manual-shift provision.

Antilock brakes have vented discs all around. The brakes feature electronic brake-force distribution and brake assist that can help in emergency braking. Seat-mounted side-impact airbags and side curtain-type airbags are standard. Front “pre-crash” seat belts tighten during emergency braking. The front seats have active head restraints. Infiniti’s Vehicle Dynamic Control electronic stability system is installed.

Consumer reviews

Rating breakdown (out of 5):
  • Comfort 5.0
  • Interior design 5.0
  • Performance 5.0
  • Value for the money 5.0
  • Exterior styling 5.0
  • Reliability 5.0

Most recent consumer reviews


Most reliable cars and the only cars I owned.

I have owned Infinity automobiles since 1981. THE BEST!! These fine autos are built in Japan by employees that care about the quality of what they are building.

See all 1 consumer reviews


New car and Certified Pre-Owned programs by INFINITI
Certified Pre-Owned program benefits
Maximum age/mileage
Months from In-Service Date (ISD): Less than or equal to 60 months from ISD | Vehicle Mileage: Less than or equal to 15,000 Miles | Greater than 15,000 Miles but less than or equal to 60K miles
Basic warranty terms
6 years/75K miles from original ISD | 6 years/unlimited miles from original ISD
72 months/70,000 miles
Dealer certification required
167-point inspection
Roadside assistance
View all cpo program details

Have questions about warranties or CPO programs?

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