The 2021 Acura Rdx stands out in the competitive compact luxury SUV market, offering a blend of performance, technology, and sophisticated design. For those in the market or simply curious about what this vehicle brings to the table, a detailed look at its specifications and features is essential. This breakdown provides a comprehensive overview of the 2021 Acura RDX, covering everything from its engine and drivetrain to dimensions, safety, and interior amenities.
Engine and Performance
At the heart of the 2021 Acura RDX is a potent 2.0-liter, turbo aluminum-alloy 4-cylinder engine. This powerplant delivers a robust 272 horsepower at 6,500 rpm and 280 lb-ft of torque, available across a wide band from 1,600 to 4,500 rpm. The engine features a 16-Valve, DOHC VTEC® valvetrain, direct fuel injection, and a Drive-by-Wire Throttle System for responsive and efficient performance. The compression ratio is set at 9.8:1, and the engine is designed to meet ULEV-50 CARB emissions ratings, reflecting a commitment to environmental standards. Acura recommends a generous 100k +/- miles tune-up interval, highlighting the engine’s long-term reliability and reduced maintenance needs. Both the standard RDX and the RDX SH-AWD models share this engine, ensuring consistent power across the lineup. An idle stop feature further enhances fuel efficiency in urban driving conditions.
Drivetrain and Handling
The 2021 Acura RDX offers two drivetrain configurations to suit different driving preferences and needs. The standard model comes with Front-Wheel Drive (FWD), providing efficient everyday driving. For enhanced traction and control, especially in varied weather conditions, the Acura RDX SH-AWD® (Super Handling All-Wheel Drive™) is available. Both models are equipped with a responsive 10-Speed Automatic Transmission, coupled with Sequential SportShift Paddle Shifters for a more engaging driving experience. The gear ratios are identical between the FWD and SH-AWD versions, ranging from a 1st gear ratio of 5.25 to a 10th gear ratio of 0.52, optimized for both acceleration and fuel efficiency. The final drive ratio is 4.17 in both configurations.
Fuel Economy and Efficiency
Fuel efficiency is a key consideration for SUV buyers, and the 2021 Acura RDX performs admirably in this area. The EPA fuel economy ratings for the standard RDX (FWD) are 22 mpg city, 28 mpg highway, and 24 mpg combined. The RDX SH-AWD achieves slightly lower figures at 21 mpg city, 27 mpg highway, and 23 mpg combined. Opting for the A-Spec® Package slightly alters these figures, with the FWD A-Spec rated at 22/27/24 mpg (City/Highway/Combined) and the SH-AWD A-Spec at 21/26/23 mpg. Acura recommends premium unleaded 91 octane fuel for optimal performance and efficiency. Both models feature a fuel tank capacity of 17.1 U.S. gallons, providing a substantial driving range.
Chassis and Suspension
The 2021 Acura RDX chassis is engineered for a comfortable yet dynamic driving experience. It utilizes a MacPherson Strut front suspension and a Multi-Link rear suspension in both RDX and RDX SH-AWD models. Stabilizer bars, measuring 30mm at the front and 23mm at the rear, contribute to reduced body roll and enhanced handling. Amplitude Reactive Dampers are standard, and the Adaptive Damper System is noted as ‘A’ in the original specification, likely indicating availability within specific packages or trims. The Dual-Pinion, Variable-Ratio Electric Power Steering (EPS) system provides precise and responsive steering input, while the Integrated Dynamics System (IDS) offers 4 modes – Snow, Comfort, Sport, and Sport+ – allowing drivers to tailor the vehicle’s dynamics to different conditions and preferences. Agile Handling Assist® further refines cornering performance. Ventilated front disc brakes (12.4 inches) and solid rear disc brakes (12.2 inches) provide ample stopping power. The standard wheels are 19 x 8.0 Glitter Silver Multi-Spoke aluminum-alloy, with variations depending on the package, including Pewter Gray Metallic Machine-Finished Split 5-Spoke (Technology Package), Shark Gray Split 5-Spoke (A-Spec Package, 20 x 8.0), and Medium Alloy Silver Interwoven (Advance Package). Tire sizes vary as well, with 235/55 R19 High-Performance All-Season tires standard and 255/40 R20 High-Performance All-Season tires for the A-Spec Package. The steering ratio is 11.95, and the turning diameter (curb to curb) is 38.9 feet.
Dimensions: Exterior and Interior Space
The 2021 Acura RDX offers practical dimensions for a compact SUV. Exterior dimensions are consistent across both RDX and RDX SH-AWD models, with a length of 186.8 inches, a width of 74.8 inches, and a height of 65.7 inches. The wheelbase measures 108.3 inches, and the track is 64.2 inches (front) and 64.7 inches (rear). Ground clearance is 8.2 inches unladen, providing suitable capability for various terrains.
Inside, the RDX prioritizes passenger comfort and cargo utility. Front headroom is 40 inches, and rear headroom is 38 inches. Legroom is generous with 42 inches in the front and 38 inches in the rear. Shoulder room measures 60 inches (front) and 57 inches (rear), while hip room is 55 inches (front) and 50 inches (rear). EPA passenger volume is 104 cu ft. Cargo volume behind the second row is 29.5 cu ft (SAE J1100 standard) or 31.1 cu ft (including underfloor storage). Maximum cargo volume behind the first row reaches 58.9 cu ft (SAE J1100 standard) or a substantial 79.8 cu ft when including floor space between seats and with front seats moved forward.
Weight and Distribution
Curb weight varies depending on the configuration and package. The base RDX weighs 3783 lbs, while the RDX SH-AWD is heavier at 4019 lbs. Adding the Technology Package slightly increases the weight, while the A-Spec and Advance Packages also have specific curb weights. Weight distribution is approximately 59/41 (front/rear) for the FWD model and 57/43 for the SH-AWD, influencing handling characteristics.
AcuraWatch™ and Safety Features
The 2021 Acura RDX is equipped with AcuraWatch™, a suite of advanced safety and driver-assistance technologies. This includes Forward Collision Warning (FCW) System, Collision Mitigation Braking System™ (CMBS™), Lane Departure Warning (LDW) System, Lane Keeping Assist System (LKAS), and Road Departure Mitigation (RDM) System. Blind spot information (BSI) System, Adaptive Cruise Control (ACC) with Low-Speed Follow, and a Multi-View Rear Camera with Dynamic Guidelines are also standard. Higher trims like Technology, A-Spec, and Advance Packages add features like Head-Up Warning (HUW), Surround-View Camera System, and Rear Cross Traffic Monitor.
Standard safety features across all 2021 Acura RDX models include the Next-Generation Advanced Compatibility Engineering™ (ACE™) Body Structure, dual-stage, multiple-threshold front airbags, front side airbags, side curtain airbags, front knee airbags, Vehicle Stability Assist™ (VSA®) with Traction Control, 4-Wheel Anti-Lock Braking System (ABS), Electronic Brake Distribution (EBD), and Brake Assist. LED Daytime Running Lights (DRL), Tire Pressure Monitoring System (TPMS), and a theft-deterrent system with electronic immobilizer are also standard.
Convenience, Audio, and Interior Amenities
Driver convenience features include Hill Start Assist, Electric Parking Brake with Automatic Brake Hold, Cruise Control, and Auto-On/Off Headlight Operation. Parking sensors are added with the Technology, A-Spec, or Advance Packages. Rain-Sensing Windshield Wipers, Heated Side Mirrors, HomeLink®, and a compass are also included, with rain-sensing wipers specific to the Advance Package.
The RDX boasts a True Touchpad Interface™ paired with a 10.2-Inch HD Dual-Content Center Display and a 7-Inch Color Multi-Information Display (MID). A 10.5-Inch Head-Up Display (HUD) is available on Advance Package models. Connectivity features include Mobile Hotspot Capability, Acura Navigation System (Technology Package and above), AcuraLink Real-Time Traffic™, Natural Language Voice Recognition, AcuraLink® Connected Services, Apple CarPlay®, Android Auto™, and Siri® Eyes Free. Audio systems range from a 9-speaker Acura Premium Audio System to a 16-speaker Acura/ELS Studio® 3D Premium Audio System in A-Spec and Advance Packages. HD Radio®, SiriusXM® Satellite Radio, USB Audio Interface, Bluetooth® Streaming Audio, and multiple USB charge ports are standard.
Interior comforts include Dual-Zone Automatic Climate Control, Keyless Access System with Acura Personalized Settings, Pushbutton Ignition, Power Windows with Auto-Up/Down, and Heated Front Seats. Sport Seats with Leatherette-Trimmed Interior are standard, with upgrades to Milano Premium Leather in higher trims. Front 12-Way Power Seats are standard, with 16-Way Power Seats in the Advance Package. Heated and Ventilated Front Seats, Heated Rear Seats, Heated Steering Wheel, Leather-Wrapped Steering Wheel, Panoramic Roof, and a Height-Adjustable Power-Operated Tailgate are among the available features, varying by package.
Color and Trim Options
The 2021 Acura RDX offers a range of exterior and interior color combinations. Standard exterior colors include Lunar Silver Metallic, Modern Steel Metallic, and Fathom Blue Pearl. Premium exterior colors such as Majestic Black Pearl, White Diamond Pearl, Canyon Bronze Metallic, Performance Red Pearl, Gunmetal Metallic, and Apex Blue Pearl are also available, with some colors tied to specific packages like the A-Spec. Interior colors vary by exterior choice and package, including Ebony, Graystone, Parchment, Espresso, and Red. Interior trim options include Bright Brushed Aluminum, Dark Brushed Aluminum (A-Spec), and Natural Olive Ash Burl Wood (Advance Package).
In conclusion, the 2021 Acura RDX delivers a compelling package of specifications and features, making it a strong contender in the luxury SUV segment. From its powerful turbo engine and available SH-AWD to its comprehensive safety suite and premium interior amenities, the RDX is designed to meet the needs and desires of discerning drivers.
