2013 Cadillac ATS

For the first time in its 109-year history, Cadillac will target the world's best-selling luxury sedan with this: the 2013 Cadillac ATS, an all-new model meant to challenge the also-renewed BMW 3-Series inch for inch. On paper at least, it's a battle royale.

For the first time in its 109-year history, Cadillac will target the world's best-selling luxury sedan with this: the 2013 Cadillac ATS, an all-new model meant to challenge the also-renewed BMW 3-Series inch for inch. On paper at least, it's a battle royale.

For the first time in its 109-year history, Cadillac will target the world's best-selling luxury sedan with this: the 2013 Cadillac ATS, an all-new model meant to challenge the also-renewed BMW 3-Series inch for inch. On paper at least, it's a battle royale.

DETROIT, MI - JANUARY 8: Invited journalists examine the 2013 Cadillac ATS luxury sedan after its world premiere at the College for Creative Studies on the eve of the 2012 North American International Auto Show January 8, 2012 in Detroit, Michigan. The NAIAS at Detroit's Cobo Hall opens to the public January 14th and continues through January 22nd. (photo by Bill Pugliano/Getty Images)

DETROIT, MI, - JANUARY 8: The 2013 Cadillac ATS luxury sedan makes its world premiere at the College for Creative Studies on the eve of the 2012 North American International Auto Show January 8, 2012 in Detroit, Michigan. The NAIAS at Detroit's Cobo Hall opens to the public January 14th and continues through January 22nd. (photo by Bill Pugliano/Getty Images)