Nissan’s Murano is a mid-size crossover vehicle derived from the company’s Altima sedan. It’s sold with a powerful 3.5-liter V-6 engine and a continuously variable transmission (CVT). The 2009 Nissan Murano is so relentlessly refined that the airy PR comparisons to Lexus's RX crossover actually hold water. The Murano is just as smooth as the Lexus RX 350, definitely sharper in profile, and very nearly the Lexus's equal in interior refinement. It also scores highly on the government’s crash tests.