2025 Acura MDX Vs. RDX Comparison: Size, Specs & More
Difference Between the Acura RDX and MDX at a Glance
- The Acura MDX is the larger, three-row option, while the Acura RDX is a two-row compact crossover SUV.
- You'll find more engine output with the MDX powertrains, especially the available turbo V-6, while the RDX prioritizes standard all-weather traction and fuel-efficient performance.
- Though the RDX is spacious for a compact model, the MDX is undoubtedly the optimal choice for growing families.
- Both models have many premium standard and available amenities, with the MDX coming out slightly on top with some minor enhancements.
- With a lower starting MSRP, the Acura RDX is well-suited for smaller families who want to experience deluxe Acura quality.
2026 Acura RDX vs. MDX: Compare 2 Stunning Luxury SUVs
An Acura RDX vs. MDX comparison reveals two upscale SUVs with elegant interiors and powerful specs. The Acura RDX is a maneuverable, fuel-efficient compact SUV with reliable performance, standard Super Handling All-Wheel Drive, and excellent cabin features, such as an available leather interior and a standard 10.2-inch HD dual-content center display. The MDX is a larger midsize model with seven seats, extra passenger space, a more potent engine – especially on the Type S trim – and the next level of state-of-the-art technology, such as Advanced Pedestrian Detection and a larger 12.3-inch center touchscreen.
However, both models are dedicated to durability and modern technology. For instance, each offers an available 10.5-inch Head-Up Display in its lineup and comes standard with natural language voice recognition.
See how these two- and three-row SUVs compare with our detailed Acura MDX vs. Acura RDX guide below. We'll be pitting them against one another in key categories to help you determine which is better suited to your lifestyle and preferences. The short answer is that neither model will disappoint – every Acura sport-ute is built around driver satisfaction first and foremost.
For motorists who happen to be in our area, we invite you to visit us at Muller's Woodfield Acura in Hoffman Estates, IL, to take your favorite model-and-trim combination out on a test drive. We can even help you make it yours at a competitive rate with our Acura lease and finance incentives.
Acura MDX vs. RDX: How Do Their MPG & Performance Specs Compare?
To summarize Acura MDX vs. RDX specs, the MDX is the more powerful model, but the RDX is the more fuel-efficient choice.
Starting with the MDX, we see a standard 3.5-liter V-6 under the hood. It makes 290 horsepower and 267 pound-feet of torque. However, the difference between the Acura MDX vs. MDX Type S is its available engine – a 3.0-liter turbo V-6 that makes 355 horsepower and 354 pound-feet of torque.
Acura RDX vs. MDX engines are very different. Rather than a V-6, the RDX uses a 2.0-liter turbocharged four-cylinder. This engine makes 272 horsepower, which is fewer ponies than the standard MDX engine. However, the RDX powertrain generates 280 pound-feet of torque, which is slightly more potent than the standard MDX engine. The Acura RDX does not have an available engine upgrade.
In terms of drivetrain options, the RDX comes standard with the automaker's Super Handling All-Wheel Drive, while the MDX has standard front-wheel drive on the first two trims, which can be upgraded to SH-AWD – all other trims for the MDX come with SH-AWD as standard equipment.
As mentioned, the RDX is more efficient than the MDX, delivering up to an EPA-estimated 21/27/23 MPG (City/Highway/Combined) with SH-AWD,1 while the MDX tops out at an EPA-estimated 19/26/22 MPG (City/Highway/Combined)1 with front-wheel drive. Opting for SH-AWD with the MDX gives an EPA maximum rating of 19/25/21 MPG (City/Highway/MPG).1 The more powerful Advance Type S has a slightly lower estimate in exchange for its increased output.
When we look at whether the RDX or MDX has the higher towing capacity, you'll find the midsize model with the V-6 engine choices can pull more weight. The MDX has a maximum towing capacity of 3,500 pounds2 with FWD or 5,000 pounds2 with SH-AWD. In comparison, the RDX gives you 1,500-pound maximum hauling capacity.2
Review the chart below for an overview of both models' various specs.
Acura MDX vs. Acura RDX Comparison Chart
2026 Acura MDX |
2026 Acura RDX |
|
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Engine | 2.0L turbo 4-cyl |
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Horsepower | 272 |
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Torque | 280 lb-ft |
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Transmission | 10-speed auto w/ paddle shifters |
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Drivetrain | SH-AWD |
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Max. EPA-Est. MPG (Cty / Hwy / Comb) | 21 / 27 / 231 |
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Max. Towing Capacity | 1,500 lbs2 |
| 7 | Max. Seating Capacity | 5 |
| 18.1 / 48.4 / 95 cu ft | Cargo Capacity (Behind 3rd / 2nd / 1st Row) | – / 31.1 / 79.8 cu ft |
Acura RDX or MDX: Which Is Bigger?
As already mentioned, the MDX is a midsize three-row SUV, while the RDX is classified as a compact sport utility vehicle, giving the former the edge on overall size. At a length of 187.4 inches, a width of 74.8 inches, and a height of 65.7 inches, you'll be plenty comfortable maneuvering through narrow streets in a two-row RDX. However, if more space is what you're after, our RDX vs. MDX size comparison favors the three-row midsize SUV. The 198.4-inch length, 78.7-inch width, and 67.9-inch height of the MDX translate to more cargo space, as we'll see in the next section.
That doesn't necessarily mean the RDX is small. In fact, compared to other compact SUVs, the Acura RDX is a very sizeable option – as you can see in our Acura RDX vs. Lexus NX 350. If you want an agile model that can easily traverse city streets, the RDX is your choice.
Acura MDX vs. Acura RDX: Which Has More Interior Room?
As the bigger SUV, the MDX naturally has more interior cargo room than its smaller sibling. However, you might be surprised by how close some of the passenger specs are between these two stablemates, with the RDX even offering more room for passengers in some instances. You may not be able to bring as many passengers along in a 2026 Acura RDX, but the ones who do earn a seat will certainly be comfortable. The most crucial factor to keep in mind when comparing the Acura MDX and RDX dimensions is that the MDX is a three-row, powerful SUV, while the RDX is a two-row, efficient option.
The MDX can fit up to seven occupants in its three rows; the RDX has five seats in its two rows. The Acura MDX trim levels offer you the following interior dimensions:
- Passenger Volume: 139.1 cubic feet
- Legroom (First/Second/Third Row): 41.6 inches/38.5 inches/29.1 inches
- Headroom (First/Second/Third Row): 38.5 inches/38.1 inches/36.2 inches
- Shoulder Room (First/Second/Third): 61.9 inches/60.3 inches/55.2 inches
- Hip Room (First/Second/Third): 59.3 inches/57.8 inches/40.6 inches
- Cargo Volume (Behind Third/Second/First Row): 18.1 cubic feet/48.4 cubic feet/95 cubic feet
As for the 2026 Acura RDX, you'll have the following measurements:
- Passenger Volume: 104 cubic feet
- Legroom (First/Second Row): 42 inches/38 inches
- Headroom (First/Second Row): 40 inches/38 inches
- Shoulder Room (First/Second Row): 60 inches/57 inches
- Hip Room (First/Second Row): 55 inches/50 inches
- Cargo Volume (Behind Third/Second/First Row): 31.1 cubic feet/79.8 cubic feet
As you can see from the values above, the smaller Acura RDX actually provides more front legroom and headroom than the larger MDX model – largely due to having only two rows and less cargo volume.
With a more spacious interior overall, the MDX is undeniably the better road trip machine for larger families. The RDX is more compatible with drivers with smaller families who don't need a third row of seats. Either can be yours for a great price with our new Acura specials.
Acura MDX vs. Acura RDX: How Do Safety Features Stack Up?
Like any other new Acura model for sale, MDX and RDX safety features are a selection of the latest advancements in automotive technology and engineering.
The good news is that either choice will reward you with a competitive package of standard safety and driver-assistance systems. Both models in our Acura RDX versus MDX comparison offer the following driver aids as standard equipment:
- Adaptive Cruise Control with Low-Speed Follow
- Collision Mitigation Braking System
- Blind Spot Information System
- Rear Cross Traffic Monitor
- Road Departure Mitigation System
- Lane Keeping Assist System
- Forward Collision Warning
- Lane Departure Warning
- Traffic Sign Recognition
- Rearview Camera System with Dynamic Guidelines
- Auto High-Beam Headlights
While they're nearly even, and both are examples of the Acura brand's commitment to safety, there are some notable differences between the 2026 Acura RDX vs. MDX safety assists. For example, the Acura RDX has standard Pedestrian Detection, but the Acura MDX has standard Advanced Pedestrian Detection. This is partially due to the higher starting price of the Acura MDX, which grants it some extra tech features that are unavailable to the smaller, more accessible model or require higher-end trims.
What's New in the Acura MDX vs. RDX Comparison?
If you're thinking about an older MDX or RDX and want to see how they compare to the current iterations, you'll be happy to know that most of the performance features and standard appointments match last year's outfittings.
For 2026, most features in these new Acura models are minimally changed. You'll benefit from the same sharp engineering and precision attention to detail in all arenas: safety, performance, interior styling, comfort, and convenience.
However, if you want a thorough review of the Acura MDX and Acura RDX trim packages, our team can walk you through the latest editions or older models to help you make a financially prudent decision based on the needs of you and your family.
Compare the Acura RDX vs. MDX in Person at Muller's Woodfield Acura
Whether you want to continue comparing Acura models, like the Acura MDX vs. Acura Integra, or have the right Acura vehicle in mind already, our Acura dealership is here to help with your new automobile search. See the deeper details from both sides of the Acura RDX vs. MDX comparison today by visiting us for a test drive of both models.
You can also check out more reasons to always shop for Acura vehicles. For example, when you read through our Acura MDX vs. Honda Pilot guide, you'll see how the Acura brand upgrades you to luxurious and advanced cabins for an elevated driving experience.
Frequently Asked Questions
Is the Acura MDX bigger than the Acura RDX?
Yes, the Acura MDX is a larger SUV than the Acura RDX and also offers another row of seats so that you can fit more passengers. The Acura MDX is 198.4 inches long and provides seating for up to seven. The Acura RDX is 187.4 inches long and has five seats across two rows. The MDX, as you'd expect from this difference, has more maximum cargo room.
Does the Acura MDX have a touchscreen?
Yes. The 2026 Acura MDX replaces the touchpad infotainment system from one of its previous editions with a 12.3-inch color touchscreen in the center stack. It boasts Google built-in services to maximize your connectivity while on the road, and is designed to offer intuitive controls for your music, navigation, and vehicle settings. Additionally, you'll have standard wireless Apple CarPlay® and Android Auto™ and a wireless charging pad.
Does the Acura RDX need premium gas?
Due to its high-performance turbocharged engine, the manufacturer recommends that you use premium 91-octane unleaded gasoline in your new Acura RDX – any fuel with an octane rating lower than 91 should not be used in the Acura RDX, as engine damage can occur when using non-premium fuel extensively. It is also recommended that you use that quality of gas in the 2026 Acura MDX.
What is the difference between RDX and MDX seats?
The only seating difference is the MDX technology. The RDX and MDX start with sport seats and leatherette trimming and scale to be covered with Milano premium leather upholstery, though the MDX seats are Curvilinear Quilted. They are both 12-way standard and 16-way available, with the MDX providing massage and memory functions on higher trims. You can find available heated rear outboard seats for both models, too.
Continue your Acura research
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.
2Towing requires the addition of the Acura accessory trailer hitch and hitch ball. Please see your Acura dealer for details. Added cargo weight in the vehicle may reduce max towing capacity, see Owners Guide for details.