Acura's large sedan has been freshened recently, gaining a new 10-speed automatic transmission and styling updates.
Still, it falls well short of its competitors and misses some of the key attributes that make up a luxury sedan.
The ride is unsettled, undermining the car's main mission.
Lack of handling agility makes the car ungainly in corners.
A high point is the smooth, responsive 310-hp V6 engine.
Our tested front-wheel-drive model averaged 23 mpg overall with the old six-speed automatic transmission.
The pricey all-wheel-drive hybrid gets an EPA-rated 28 mpg combined.
The spacious cabin is well-made, but it isn't particularly luxurious and the complicated controls are frustrating to use.
The RLX comes with a suite of standard safety features such as forward collision warning, automatic emergency braking, blind spot and rear cross traffic warning.