The RLX is Acura’s largest and most opulent sedan. It arrived in 2014 and received a major refresh in 2018. It carries over for 2019. Every RLX includes a 3.5-liter V6 that makes 310 horsepower and 272 pound-feet of torque. A 10-speed automatic transmission with paddle shifters sends power to the front wheels, although all-wheel steering keeps handling in line. Thanks to variable cylinder management and a few other tricks, the RLX pulls off a respectable 20 mpg city, 29 highway, and 23 combined. The RLX comes in a single trim that includes 19-inch alloy wheels, keyless access and start, LED headlights, 3-zone climate control, heated front seats, ambient cabin lighting, a 14-speaker audio system, a power moonroof, 12-way power seats, perforated leather upholstery with contrast stitching, and satellite radio. On the safety front, every RLX bundles forward-collision warning, automatic emergency braking, road-departure mitigation, lane-keep assist, blind-spot monitoring, a multi-view camera, and adaptive cruise control. The RLX achieved a 5-star overall rating from the National Highway Traffic Safety Administration (NHTSA) and Good scores from the Insurance Institute for Highway Safety (IIHS). The Acura RLX combines tech and luxury, making it a choice worth considering.