Interior comfort is good in the 2011 Cadillac CTS-V, especially if you're sitting out front in the well-bolstered leather sport seats or the even better available Recaro seats—finished in a breathable and grippy microfiber—that add lateral support for high-performance driving and supportive thigh extensions for taller drivers. The backseats are a little tight, but there's enough space for two adults in reasonable comfort. The instrument panel is a love-hate thing; it's attractive, with some impressive features and design details, but rather cluttered overall, with the climate controls especially low, near the driver's knee.
The new CTS-V Coupe rides on the same wheelbase as the CTS-V Sedan, so in theory backseat space should be comparable. It is, however, much more challenging to get in and out through the narrow opening. Such is the price of fashion. In the opinion of the editors, the CTS-V Sport Wagon is very fashionable and also more comfortable and practical, with longer rear doors for easier access, as well as a larger cargo space and more versatility.
Surprisingly, the ride quality is very good no matter which model, courtesy of Cadillac's unique magnetic ride control suspension. It uses electric current to change the consistency of magnetorheological fluid in the shock absorbers multiple times a second, permitting independent control of each shock's compliance rate depending on driving conditions.