Photo Credit: Infiniti USA

Photo Credit: Infiniti USA

Hard to believe, but Nissan’s upscale Infiniti division is closing on being one quarter of a century old. And from the time it first started selling cars in the United States in late 1989, Infiniti’s products typically have been a little edgier and sportier than many of its competitors.

That’s still true today.

Infiniti’s flagship sedan for 2013 is the M56, now in its third year of production. The Infiniti M comes in several distinct flavors: The M37 is a six-cylinder sedan powered by a 330-horsepower, 3.7-liter sedan, while this week’s test car, the M56, gets the much more powerful 5.6-liter V-8 that produces a full 420 horsepower. There is also am M Hybrid variant based on the M37, and both the M37 and M56 are available with your choice of rear- or all-wheel drive.