Originally previewed as the Acura RD-X concept car, the production RDX had its debut at the 2006 New York Auto Show and went on sale on 11 August 2006. A facelifted 2010 model went on sale in August 2009, which featured the addition Acura's "power plenum" grille and a front-wheel drive option.
Produced from July 2006 to 2012
Second Generation
The second generation RDX was revealed during January 2012 at the North American International Auto Show going on sale in April. The turbocharged four-cylinder engine was replaced by a 3.5-liter V6 mated to a six-speed automatic, improving gas mileage to an EPA estimate of 20 mpg‑US (12 L/100 km; 24 mpg‑imp) city, 28 mpg‑US (8.4 L/100 km; 34 mpg‑imp) highway, and 23 mpg‑US (10 L/100 km; 28 mpg‑imp) combined, by using variable displacement (VCM). The SH-AWD system was replaced with a simpler and less costly AWD setup.
Produced from March 2012 to 2018
Third Generation
Acura debuted the 2019 RDX Prototype, on January 15, 2018, at the North American International Auto Show. Production of the RDX began in May 2018 at East Liberty, Ohio. The 2019 model arrived at dealerships across North America on June 1, 2018.