After a complete redesign in 2005, the 2006 RL built a little more on the technological aspects, but left the styling alone. A new optional RL technology package includes Adaptive Cruise Control, Collision Mitigation Braking, and Michelin PAX Run-Flat Tires. Combined with the pre-existing features, this makes for a very safe car from Acura.

The engine on the 2006 RL lost some horsepower from 2005, but gained some torque. The only available engine is the 3.5-liter V6, rated at 290 horsepower and 256 lb-ft of torque. The 2006 RL requires premium gas, and gets 18 miles per gallon in the city and 24 miles per gallon on the highway.

Drivers loved the embedded technology in the car, including a year's free subscription to XM radio, the Bose stereo, and the navigation system with traffic information incorporated. The major complaints center on poor mileage and on the car being less luxurious than others in the luxury sedan class.