Cadillac ->ke18 was founded in 1902 by Henry Leland and only seven years later, General Motors acquired it. Currently, Caddy is one of the oldest automakers in the world, and it delivers cars to the U.S. and 34 additional markets worldwide.

Cadillac has always been a very successful company, plus it was the first American car to win the Dewar Trophy from the Royal Automobile Club of England. In 2013, however, its success grew even further, as Cadillac enjoyed a 21-percent increase in sales, with almost 185,000 units delivered worldwide. The overall sales number marked the most since 2007 and the overall brand growth made it the fastest-growing luxury brand in 2013, which is obviously a byproduct of the brand's largest expansion since 1976.

As you probably expect, the greatest success in the lineup went to the new sedans -- the ATS and CTS -- which saw sales improvement of 48 percent over 2012 sedan sales numbers.

The 2014 ELR had a late hand in boosting the overall sales numbers, as deliveries began in December.

Click past the jump to read more about Cadillac's sales leader for 2013, the ATS.

Cadillac ATS

The ATS joined Cadillac's lineup just in time for the 2013 model year, and it is offered with a choice of three engines. The base model gets a 2.5-liter four-cylinder that delivers 201 horsepower, while top version gets a 3.6-liter V-6 producing 321 horsepower. The model that has enjoyed most of the success is the ATS Turbo, which gets a 2.0-liter turbocharged four-cylinder with an output of 272 horsepower.

Prices for the 2014 ATS start from $33,990.