In 2008 Infiniti released the M45 X to the car-buying market. The M45 came in two configurations: Base, X, and Sport. The X configuration is powered by the 4.5-liter eight-cylinder engine, which makes 23 highway miles and 16 city. The M45 competes in the Sedan market segment, in direct competition with Kia.

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The M45 X is equipped with a Nissan 4.5 liter eight-cylinder engine that utilizes 32 valves. The engine is mated to a Jatco 5-speed Transmission. This configuration has proven to be a successful design for Infiniti.

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The restyled M45 X is equipped with a Nissan 4.5-liter 8-cylinder engine that utilizes a total of 32 valves. The engine is paired with a Jatco 5-speed transmission. This configuration has proven to be a successful design for Infiniti.

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A lot has been said about the Infiniti M35 for 2007. As Infiniti's entry in the sedan market the M35 (and in this case specically the X version) has maintained a good reputation. The 4-door M35 is especially appealing to wide market segment, making it a perfect car to help Infiniti as a brand in general.

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