The RL's front seats are firm and supportive, with ventilated leather (and heating and cooling) striking a good comfort balance; all they're missing are extending thigh supports. In back, though, there's, surprisingly, just enough space for adults. With the front seats in their rearmost position, six-footers will find headroom and legroom in back very tight (it really doesn't feel any more ample than in a TL or Accord). The roofline has been awkwardly carved out to get that headroom, even.
The trunk also feels miniscule for a vehicle in this segment, too; the decklid and opening are quite small, and toward the frontal portion the space tapers inward and upward.
The Acura RL's real strong suit is quietness in the cabin, thanks to thicker glass and more insulation than rivals, while high-quality materials, including glossy, rich wood and solid, pleasant-feeling plastics, provide a relaxed, premium feeling. An active noise cancellation system and excellent sealing from wind noise means that even on the highway, at super-legal speeds, you'll be able to carry on a quiet, relaxed conversation.