Shop 2021 Acura RDX A-Spec vehicles in Walker Mill, MD for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 3 2021 RDX models in Walker Mill, MD.

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Acura’s newest and oldest SUVs have their own unique traits—and some surprising similarities. New for 2025, the subcompact ADX is Acura’s latest model that serves as the brand's entry-level offering.