the new Acura RL begins with the most powerful engine ever offered in an Acura sedan. An all-new 3.7-liter V-6 engine develops 300 horsepower and 271 lb-ft of torque thanks to an innovative new VTEC™ valvetrain system for both the intake and exhaust valves, a higher compression ratio, along with a special dual-stage magnesium intake manifold that enables the intake to function as a single- or dual-plenum manifold design based on engine operating parameters. In addition to developing improved power and torque, the Acura RL engine meets tough CARB ULEV-2 emission standards and delivers good fuel economy. To handle the higher power of the 3.7-liter engine, a new version of the Sequential SportShift 5-speed automatic transmission is fitted to the 2009 Acura RL.the 2009 Acura RL features a more elegantly styled interior that includes more room for rear seat passengers, easier-to-use front seat belts, door-mounted pull pockets, softer arm rests, redesigned vents, larger/clearer lettering for HVAC controls, and easier actuation of climate control functions. A revised steering wheel with available genuine wood trim (included with the CMBS package) and metal-look accents is now fitted to the Acura RL along with a matching wood-trimmed transmission shift knob. Complementing the steering wheel are upgraded gauges that incorporate brushed metal accents for enhanced appearance.