INFINITI M45 Models and M45 History

New and Used M45 Prices, INFINITI M45 Model Years and History

Infiniti revived their use of the letter M in their alphanumeric branding scheme in 2003. Assigned to a coupe and convertible from 1990 to 1992, the 2003 Infiniti M45 was marketed as a high-end, four-door sport sedan. A distant, rear-wheel drive model, the M45's positioning in the Infiniti line-up was as a performance-oriented alternative to the Q45 sedan. In fact, the 2003 Infiniti M45's power came from the same VK45DE eight-cylinder engine. The 32-valve, 4.5-liter V-8 powerplant generated 340 horsepower and was connected to a five-speed automatic transmission. Heavily equipped with standard amenities, the first generation Infiniti M45 included HID headlights, heated mirrors, front and side airbags as well as a 225-watt Bose premium audio system was included. The introduction of a second generation M45 in 2006 with a new athletic appearance, the luxurious vehicle was available with Rear Active Steer. Solely offered as a rear-wheel drive sedan from 2003 to 2007, the 2008 Infiniti M45x provided all-wheel drive for the first time. The Infiniti M45 was dropped after the 2010 model year in favor of an upgraded M56 sedan.

New and Used M45 Prices, INFINITI M45 Model Years and History

The 2010 Infiniti M45 is the same size as the M35, with seating for five and a luxurious sports sedan interior, but up front is a larger and more powerful V8 engine.
J.D. Power Ratings
Overall Quality
 3 / 5
Overall Performance
 2 / 5
Overall Dependability
 3 / 5
Consumer Reviews ( 1 )
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Swift, stylish and superb, the 2009 Infiniti M45 midsize luxury sedan packs more power than the M35 and offers more creature-comfort options.
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With extra power under its hood, the 2008 Infiniti M45 combines the brand's top level sedan with excellent performance.
J.D. Power Ratings
Overall Quality
 5 / 5
Overall Performance
 3 / 5
Overall Dependability
 2 / 5
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A 325 hp Vi powers the 2007 Infiniti M45, a luxury sports sedan with seating for five passengers and available with a Sport package.
J.D. Power Ratings
Overall Quality
 4 / 5
Overall Performance
 3 / 5
Overall Dependability
 4 / 5
Consumer Reviews ( 2 )
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The 2006 Infiniti M45 is a luxury sedan that has been redesigned for the new year and is powered by a 325 hp V8, making it comfortable and sporty at the same time.
J.D. Power Ratings
Overall Quality
 4 / 5
Overall Performance
 5 / 5
Overall Dependability
 4 / 5
Consumer Reviews ( 1 )
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A luxury mid-size sports sedan with room for up to five passengers, the 2004 Infiniti M45 is offered in one powerful 4.5L 340 hp trim which also features RWD and a five-speed automatic transmission.
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A luxury sports sedan, the 2003 Infiniti M45 seats five passengers and is powered by a 340 hp V8 engine.
Consumer Reviews ( 2 )
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J.D. Power Rating Legend
Among the Best
5 / 5
Better than Most
4 / 5
About Average
3 / 5
The Rest
2 / 5

* The J.D. Power Ratings are calculated based on the range between the car manufacturer or car model with the highest score and the car manufacturer or car model with the lowest score. J.D. Power generates a rating of a five, four, three, or two. If there is insufficient data to calculate a rating, “Not Available” is used in its place.

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