The MDX is bigger than the RDX in every way. The MDX is 196.2 inches long, 77.2 inches wide, 67.4 inches tall and offers 7.3 inches of ground clearance. The MDX has a handsome exterior design with a rounded greenhouse that offers room for a third row of seats. Up front, it wears Acura's signature shield grille bracketed by bejeweled LED headlights. Detail Comparison - Acura RDX Technology 2019 - vs - Acura MDX Technology Package 2018, their videos (reviews, off-road, commercials, crash tests) and images, Features,Price, Specifications, difference. 2019 Acura RDX A-Spec The MDX, by contrast, is powered by a 290-hp, 3.5L V-6 Engine delivering around 22 miles per gallon. The MDX is also offered in a Sport Hybrid trim boosting its mileage to a healthier 26 MPG city/27 highway. Neither trim is a monster acceleration-wise, but they’re not supposed to be, and that’s fine. Acura MDX vs Acura RDX compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs. Compare against other cars. 2011 Acura MDX vs. 2011 Acura RDX 9.8. Winner Acura MDX starting from $55,340 "Thrilling performance when it comes to acceleration." canadianblackbook.com | talking about the MDX's transmission "It’s an excellent vehicle worthy of your attention. Yes, the Acura RDX is an excellent SUV. Its turbo-four engine has more horsepower than many rivals' engines, and it delivers engaging performance. This Acura handles well and rides smoothly. Inside, the RDX provides plenty of space and looks great. Acura RDX 10.2" Center Display RDX's 10.2-inch display is easy to access and navigate with a user-friendly touchpad interface that lets you keep your hands down and eyes up. Infiniti QX50 Conventional Center Console QX50 features a conventional console area with expected storage options. The Acura RDX is quicker off the line than the Acura MDX and delivers a more spirited drive, making it the winner in this category. The RDX gets its power from a turbocharged 272-horsepower 2.0-liter four-cylinder engine that comes paired with a 10-speed automatic transmission. 2019 Acura MDX vs 2019 Acura RDX Dimensions We already answered to question about sizing. The 2019 Acura RDX is a compact crossover, and by that, smaller than its sibling. On the other hand, the 2019 Acura RDX belongs to a higher tier. The reasonable price for a luxury SUV that Acura offers makes the MDX and RDX great options in the class. The RDX style doesn’t attract a ton of attention but shines in all other areas. The MDX is Acura’s bigger SUV option with more cargo and people space if needed.