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When you're searching for an agile and versatile SUV, you'll want to compare the Acura ADX vs. RDX. These luxury SUV models both deliver responsive performance backed by flexible five-passenger interiors, but they differ in plenty of ways, too. Join us as we compare the newcomer ADX compact SUV to its slightly larger stablemate, the RDX sport crossover, below.

Acura ADX vs. Acura RDX Specs

One major difference between ADX and RDX models is the engines that power them. The new Acura ADX compact SUV is motivated by a 1.5-liter turbocharged four-cylinder, delivering 190 horsepower through a CVT (continuously variable transmission) and standard front-wheel drive (FWD). All-wheel drive (AWD) with an Intelligent Control System is available across the 2025 ADX trim lineup.

This powertrain differs drastically from the larger unit found beneath the hood of the slightly bigger Acura RDX sport crossover. The new 2025 RDX generates an even more robust 272 horsepower, courtesy of its potent 2.0-liter turbocharged four-cylinder. Instead of the ADX model's CVT and standard FWD, every new RDX is fitted with a 10-speed automatic transmission and Super Handling All-Wheel Drive (SH-AWD).

The RDX and its SH-AWD deliver enhanced dry-road handling as well as confident all-weather performance, with the sophisticated all-wheel-drive system continuously sending engine power to match the available traction, weight distribution, driver input, and other factors.

While the RDX is a wise choice for motorists seeking elevated performance and the highly advanced Super Handling All-Wheel Drive, the ADX provides multiple drive options – including FWD or AWD – and next-level fuel efficiency. Learn more about the Acura ADX specs and details online as you consider this compact SUV.

You can expect your new Acura ADX to return up to an EPA-estimated 26/31 MPG (City/Highway)¹ if equipped with standard FWD. Models featuring AWD earn up to an EPA-estimated 25/30 MPG (City/Highway)¹ rating.

The larger, more powerful RDX premium sport crossover achieves up to an EPA-estimated 21/27 MPG (City/Highway)¹ with its 272-horsepower engine, 10-speed transmission, and SH-AWD.

ADX vs. RDX Size Difference: Exterior

How do these Acura SUVs stack up in terms of exterior dimensions and cabin space? Let's take a look. We're measuring up the same model years (the 2025 Acura ADX vs. RDX) to ensure it's a fair comparison.

The 2025 RDX is slotted above the ADX in the brand's SUV lineup and is also larger in exterior dimensions. It measures 187.4 inches long, with a 108.3-inch wheelbase. Its 8.2 inches of ground clearance tops the smaller ADX by nearly an inch, with the latter model having 7.3 inches of ground-clearing abilities.

With its 104.5-inch wheelbase and total length of 185.8 inches, the ADX is only marginally smaller in terms of its exterior, but the difference translates inside the cabin, as you'll see below.

Acura ADX vs. RDX Dimensions: Interior

Both of these Acura SUVs are five-passenger, two-row models, but the RDX provides more interior space. It features 104 cubic feet of passenger volume plus 29.5 cubic feet of cargo space behind its second-row seating.

The ADX, with 24.4 cubic feet of standard cargo capacity, accommodates its occupants with 97.3 cubic feet of passenger volume. This smaller SUV compares favorably in size to some of its subcompact competitors, while the RDX rivals midsize models. See our Acura RDX vs. Honda Passport comparison for a closer look.

Acura ADX vs. RDX Comparison: Specs & Dimensions Review

Technology and Safety Features

The standard AcuraWatch suite of advanced safety and driver-assist systems on the new ADX and RDX provides the following confidence-inspiring features:

• Collision Mitigation Braking System
• Adaptive Cruise Control with Low-Speed Follow
• Lane Keeping Assist System
• Road Departure Mitigation
• Forward Collision Warning
• Lane Departure Warning
• Traffic Sign Recognition

Some differences appear the closer you look. For instance, every new ADX gets Traffic Jam Assist, a feature not listed for RDX models. The ADX starts with a single-view rearview camera, with a Multi-View Camera System included with the top trim.

The larger, more powerful RDX comes standard with a Multi-View Rear Camera with Dynamic Guidelines and adds an available Surround-View Camera System in higher trim levels, a feature not found on the ADX models.

Select Your Preferred Acura SUV

Looking for Acura ADX vs. Acura RDX images? Muller Acura of Merrillville welcomes you to view current inventory at our dealership to locate your ideal new SUV, whether that be the ADX, RDX, or other options, such as the three-row MDX or the all-electric ZDX.

We encourage you to take advantage of our Acura ADX and RDX specials for convenient, cost-effective ways to upgrade to your favorite model in our two-row SUV comparison.

Frequently Asked Questions

Is the Acura ADX bigger than RDX?

No, the RDX is bigger than the ADX. The ADX is the new entry-level SUV in the Acura lineup, slotting below the larger RDX. At 185.8 inches long, the ADX is a little smaller than the RDX, which measures 187.4 inches in length. Inside, the RDX also boasts more cargo space and passenger volume. Compare the Acura ADX vs. RDX dimensions at our dealership!

What is the difference between the Acura ADX and the RDX?

The difference between ADX and RDX mainly comes down to their powertrains and dimensions. The ADX features a 190-horsepower 1.5-liter turbo engine and a CVT, while the RDX gets a 272-horsepower 2.0-liter turbo engine paired with a 10-speed automatic transmission. The RDX is larger and gets standard SH-AWD, while the ADX is more fuel-efficient and starts at a lower price.

¹Based on 2025 EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, and other factors.