2008 Infiniti M45

  • 2008 Infiniti M45 Base Sedan

    Base Sedan

    • MAX MPG
    • SEATS
    • ENGINE
      4.5L V8
    • MSRP
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2008 Infiniti M45 Review

Good performance and new technology make this car a forerunner in its class.

Reviewed by Automotive on


The 2008 Infiniti M45 is a well-equipped luxury sport sedan in the midsize range. The company has done a great job of updating the series and keeping things fresh in terms of powertrains, special features, and body style updates. This car features a V-6 that supplies plenty of power while helping to keep fuel costs down. The exterior of the M45 looks elegant and distinctive with a comfortable and stylish cabin to match.

In addition to the M45’s good looks and powerful engine, this car also comes chock full of new and innovative safety features. It consistently ranks high on industry safety tests and evaluations.

In years past, the M45 lacked a bit of pizzazz for the midsize luxury sedan market. In 2005, Infiniti chose to update its car and soon discovered they had a winner. With consistently good ratings and a great deal of positive attention from consumers and the automotive industry alike, the 2008 Infiniti M45 marks a car worth looking at.

The Range

Body Styles: midsize luxury sport sedan
Engines: 4.5-liter V-8
Transmissions: five-speed with manual shift control and downshift rev matching
Models: Infiniti M45 base, Infiniti M45x AWD

What's New

For the 2008 Infiniti M45 some changes have been made over past years’ models. Both the exterior and interior of the car have undergone some changes. The Sport trim level gets eliminated, but the Sport package more than makes up for the loss. The new all-wheel drive option creates the M45x AWD. Other new features include the navigation and digital music system. It is hard-drive based and offers the driver real-time information on directions and traffic. The M45 has a new safety feature that alerts the driver when the car begins to drift out of the lane.


The exterior of the 2008 Infiniti M45 looks like an elegant sedan body style with plenty of classic lines and dramatic curb appeal. These cars feature an attractive, assertive grille design with flowing lines along the car’s body. It looks purposeful and powerful. Both bumpers match the car’s body and this adds a cohesive look that appeals to many drivers.


Drivers appreciate a great deal about the 2008 Infiniti M45’s cabin. Most people appreciate the room inside the cabin. It offers plenty of space to seat five adults comfortably. The leather trim and rosewood accents look elegant. Infiniti also supplies the M45 with well-chosen seating. The seats feel well-padded and designed for comfort. The gauges are well placed and accented with detailing.

With the sport package, the interior changes a bit with a simple design and layout. This package features color-trimmed pedals, aluminum accents, and front sport seats. With its unique steering wheel and shifter embellishments, the sport package version looks comfortable and attractive as well.

Performance & Handling

The 2008 Infiniti has an amazingly responsive powertrain in the form of its V-8 engine and five-speed transmission. It offers plenty of power for the various driving circumstances, whether on the road or the highway. The braking system for this car remains one of the best in the class. The steering capabilities also make the M45 a pleasure to drive. And let’s not forget the calibrated suspension system that ensures a nice, smooth ride even in the sport package models.


The 2008 Infiniti M45 ensures the best driver and passenger safety in the event a crash. Standard safety features include front side airbags, as well as full-length curtain airbags. Special systems regulate traction control as well. Anti-lock brakes include brake assist. A new feature added this year, the advanced lane departure warning system, alerts the driver if the car drifts out of its lane and even applies light brake pressure.

EPA Fuel Economy

Infiniti M45: 16/21 mpg city/highway

You'll Like

  • Responsive handling
  • Roomy cabin
  • All-wheel drive option
  • Impressive V-8 engine
  • Plenty of luxury features

You Won't Like

  • Noisy highway driving
  • Unintuitive center stack controls

Sum Up

Good performance and new technology make this car a forerunner in its class.

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