The 2005 Cadillac DeVille is a full-size luxury sedan that can seat up to six people. It has a Northstar V8 engine, and the Sedan 4D has 275 horsepower, while the DTS Sedan 4D has 290 horsepower. It also has available heated and cooled seats, and StabiliTrak stability control. Some say the 2005 DeVille has a spacious and comfortable cabin, smooth power, and admirable handling for its size. Owners also rate its reliability as above average. Here are some insights from reviews: Pros Easy-to-use DVD navigation system Cons Power window regulators may fail Heating and AC temperature and air delivery mode door actuators may fail Oil leaks from lower engine area Car won't start because of anti-theft system that uses raised-chip key TCC Inop Due to Internal Transmission Fault Fuel Level Sensor Failure