The vast room available in the 2009 Cadillac DTS is unparalleled in American-made automobiles. According to Car and Driver, the DTS is “big and roomy.” Edmunds says, “the sheer volume of room in the cabin makes the DTS a fantastic long-distance highway cruiser.” One of the few cars left that offers six-passenger seating. The seats have “as much legroom in back as they do in front.” Consumer Guide proclaims the car’s "standard bucket seats are all-day comfortable." Automedia observes, “Tons of front-seat space lets occupants stretch out. Comfortable seats are well cushioned with modest side bolstering. Support is pretty good, for both the back and thigh.” In the rear, Automedia adds, “backseat space is no less bountiful, but a hard seatback is less inviting for the center occupant.” Car and Driver dislikes the “unsupportive, couch-like bucket seats,” though.
Trunk space is virtually limitless. “The wide, easy-loading trunk holds plenty of luggage,” Automedia writes. “At nearly 19 cubic feet, the trunk has no problem accepting large suitcases or a foursome's golf bags,” Edmunds says.
“Although generally good, the interior materials are not up to the high standards set by European or Japanese luxury marques,” says Edmunds. Though the DTS is “designed for a comfort-oriented driver,” as Car and Driver observes, the quality of materials isn’t quite top-drawer. Noise and vibrations are damped well, though. Kelley Blue Book says "except for a tiny vibration at idle, the DTS is ultra-quiet." Car and Driver also compliments the 2009 Cadillac DTS for its "ample interior volume" and a particularly "quiet cabin."
Smooth riding is a hallmark of any Cadillac. The DTS does not satisfy everyone here, though. Reviewers at MyRide.com describe the 2009 Cadillac DTS as having a "cushiony ride without much wallow." Kelley Blue Book notices that with an "indisputably soft suspension, the DTS is far less floaty than might be expected."