Infiniti is the luxury arm of Nissan and was founded in 1989, when it started selling vehicles in North America as a premium brand. It has grown from its original small lineup of two vehicles to becoming a nearly full-line automaker in the North American market, with production facilities and dealerships located in the United States, Canada, and Mexico. Infiniti is best known for its dominance in the Formula One circuit under the Infiniti Red Bull Racing banner.

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Although headquartered in Nissan's global headquarters in Yokohama, Japan, Infiniti moved to a new global headquarters in Hong Kong in 2012. Interestingly, Infiniti was not introduced to Japan, until 2013, despite the Infiniti name having appeared on 1989 when the Q45 was officially titled the Nissan Infiniti Q45 there until 1996.

In recent years, Infiniti has been undergoing unprecedented brand growth due to aggressive styling, marketing, and product repositioning. Model names have changed significantly in the past two or three years. Formerly, designations of a single letter for cars and double letters for sport utilities followed by a number denoting engine displacement were the norm. Now, starting with the 2013 model year, designations have coupes and sedans beginning with the letter Q and SUVs and crossovers with the letters QX followed by a number that reflects the model's place in the lineup. Thus the popular G37 sedan became the Q50 and its coupe the Q60 while the M sedan became the Q70 and the EX becoming the QX50.

Sales for the Infiniti line have grown quickly, but held steady until the global economy dropped sales in 2009, recovering quickly by 2012. The brand sold about 116,000 units in the United States in 2013, nearly 9,000 in Canada, and about 2,200 in Europe. Infiniti's gamble has been positioning itself in China and planning to outpace Canadian sales there.

Most Infiniti vehicles are made in the brand's United States and Japanese production facilities.