The 2015 Acura RLX fills a gap in the automaker's lineup left by the departure of the RL luxury sedan in 2012. The RLX is powered by a 3.5L direct-injection aluminum V6 making 310 horsepower and 272 ft-lb of torque, which is mated to a 6-speed automatic transmission with Sequential SportShift paddle shifters and Grade Logic Control. With a curb weight of 4,000 pounds, the RLX isn't light, but the powertrain works well to propel the car to 60 mph in under seven seconds.
The RLX features unit body construction and rides on independent double wishbone suspension with lower control arms up front and an independent multi-link with coil springs and a stabilizer bar in the rear. Acura's Agile Handling Assist System provides active braking of individual wheels to assist in cornering, while the crown jewel of the RLX's dynamic handling is Precision All-Wheel Steer (P-AWS). The system enables the rear wheels to adjust toe angles independently of each other, while working in conjunction with Agile Handling Assist and Vehicle Stability Assist. Four-wheel 12-inch disc brakes provide stopping power, while 18- or 19-inch alloy wheels hold road-hugging high-performance all-season tires. Up front, "Jewel Eye" LED headlights provide what Acura claims to be a whiter, brighter beam than either HID or halogen lamps.
Standard equipment in the RLX includes leather seating, front 12-way power seats, a premium 404-watt 10-speaker audio system, Bluetooth hands-free connectivity, a multi-view rear camera, Forward Collision Warning system and a Lane Departure Warning. The RLX with Navigation adds navigation with voice recognition, AcuraLink Real-Time Traffic and a color multi-information display. A Krell Audio Package adds a 450-watt 14-speaker Krell sound system, power rear sunshade and rear door sunshades. Finally, the top-of-the-line RLX with Advance Package includes 6-way heated and ventilated front seats and heated rear seats, as well as a Collision Mitigation Braking System, Lane Keeping Assist System and Adaptive Cruise Control, all of which work to keep the car out of harm's way through a series of alerts, automatically controlled braking and measured following distance.