The Cadillac CTS line-up expands to three models for 2011. Featuring an attractively raked roof line and a rear track that are two inches wider than the sedan, the 2011 Cadillac CTS Coupe includes a 2+2 passenger interior. An all-new CTS Coupe marks Cadillac's first fixed-roof two-door since the demise of the Eldorado. Along with the introduction of the CTS Coupe, the high-performance arsenal of the Cadillac model launches with an expanded V performance line. Joining the Cadillac CTS-V Sedan, the CTS-V Coupe and CTS-V Wagon is equipped with 556-horsepower supercharged engines in addition to other handling and trim upgrades. Updated OnStar systems highlight changes to the DTS and STS sedans. The Cadillac Northstar V-8 engine has been dropped from the 2011 STS sedan line-up but a Luxury Collection and Premium Collection version of the cars is now offered with the model.