Acura RDX Vs. INFINITI QX55: Luxury SUV Comparison

2025 Acura RDX vs. INFINITI QX55 Performance & Fuel Efficiency Specs

Compare Acura RDX and INFINITI QX55 SUVs, and you'll see some similarities starting things off. Namely, both models have a standard 2.0-liter turbo four-cylinder engine that makes 280 pound-feet of torque and delivers highly competitive EPA-estimated MPG ratings -- 21/27 MPG (City/Highway) for the Acura RDX¹ and 22/28 MPG (City/Highway) for the QX55.² However, things vary once you explore the drivetrain.

• Enjoy up to a 6.5-second 0-60 mph time with the Acura RDX⁴ while the QX55 lags behind with a 6.9-second 0-60 time.⁵
• Towing is not recommended with an INFINITI QX55, since the brand does not officially rate it for hitching. Meanwhile, the Acura RDX has a towing capacity of 1,500 pounds,³ which makes it perfect for light towing work – from small vacation vehicles to small open utility trailers.

The INFINITI QX55 is a passable SUV for those wanting a performance-driven engine, but the Acura RDX is universally a step above. With its SportShift Paddle Shifters and better acceleration, you can always trust this Acura model to revolutionize your commute with consistently enjoyable design.

Acura RDX vs. INFINITI QX55 Exterior Dimensions & Interior Space

It's important to take note how much interior room an SUV has. These larger vehicles demand a slight drop in agility from their sedan counterparts, so enhanced spaciousness must be a benefit; a more maneuverable exterior design also helps out. If you guessed that the Acura model leads the INFINITI QX55 vs. Acura RDX comparison with much more interior room at a near-identical size, you'd be correct.

As you can see in the above chart, the INFINITI QX55 vs. Acura RDX length measurements are similar, with the Acura RDX being bigger by 1.1 inches. Width is even closer, as both models are within 0.1 inches of each other. Height can vary by trim, but the RDX is generally within two inches of the QX55.

Both models are two-row, five-seat SUVs. However, as you can see in our Acura RDX vs. Lexus NX 350 comparison, the Acura RDX is exceptional in its segment for interior spaciousness.

• The Acura model offers 3.8 cubic feet of extra passenger volume and a staggering 25.7 additional cubic feet of maximum cargo capacity with the seats folded down compared to what the INFINITI option can hold.
• You also get 2.4 inches of extra front legroom compared to an INFINITI QX55, along with more headroom in both the front and rear seats.

Acura RDX vs. INFINITI QX55 Trim Levels & Price Comparison

When putting the Acura RDX vs. INFINITI QX55 trim levels up against each other, you'll notice two immediate wins for the Acura RDX: it has five trims to choose from (more than the INFINITY QX55) and starts at a much lower MSRP than the INFINITI QX55. The Acura RDX trim packages are the RDX Base, RDX Technology, RDX A-Spec, RDX Advance, and RDX A-Spec Advance.

There are only three INFINITI QX55 trim levels: the QX55 Luxe AWD, the QX55 Essential AWD, and the QX55 Sensory AWD.

For pricing, the third-highest RDX trim, the Acura RDX A-Spec with SH-AWD, has the closest starting price MSRP to the base-trim INFINITI QX55 Luxe AWD. The upgraded INFINITI QX55 Essential AWD has a higher starting price MSRP than any Acura RDX trim level's starting price MSRP. As we'll demonstrate in the next section, the lower price of an Acura RDX combines with further feature-based upgrades when you compare INFINITI QX55 vs. Acura RDX technology, comfort, and safety.

When you discover our Acura RDX lease deals, you can get an even more competitive price for this competitive luxury SUV.

INFINITI QX55 vs. Acura RDX Interior Features

As mentioned, the entry-level Acura RDX and Infiniti QX55 comparison involves a much lower starting price in the base trim of the Acura RDX. And yet, the value you receive from its baseline features is massive, especially when compared to the INFINITI QX55.

For example, the Acura RDX Base offers standard wireless smartphone charging, wireless Android Auto™, and a nine-speaker premium sound system; the INFINITI QX55 Luxe AWD can match most of that wireless functionality, yet only comes with a six-speaker system, reducing the luxurious feel of your cabin with lower sound quality.

When you put the Acura RDX A-Spec with SH-AWD to the equivalently priced INFINITI QX55 Luxe AWD, this lead for features gets much, much bigger: This trim of the Acura RDX brings you perforated Milano premium leather and ultrasuede seats with contrast stitching and piping, while the QX55 Luxe AWD has leather upholstery. This Acura RDX trim includes an Acura/ELS Studio 3D premium sound system with 16 speakers, while, as mentioned, the QX55 Luxe AWD has a six-speaker sound system.

With other Acura RDX A-Spec standard features like heated and ventilated seats (not available on the equivalently priced INFINITI QX55 Luxe AWD), Iconic Drive ambient LED cabin lighting with 27 themes (with no ambient lighting features offered on any QX55 trim) and a leather-wrapped flat-bottom steering wheel (a sportier touch over the QX55), it's easy to see how the RDX dominates the INFINITI QX55 vs. Acura RDX feature comparison.

Acura RDX vs. INFINITI QX55 Design & Style

As a final point of comparison, let's look at the 2025 Acura RDX vs. INFINITI QX55 styling.

While this is an area with no objective winner and you as the main judge, we do have some comments to make. Firstly, the INFINITI QX55 SUV's roofline has a coupe-like shape in the back, which reduces cargo capacity and can, in our opinion, look out of place on an SUV that's this tall. The RDX has a more traditional SUV body shape but makes itself stand out with impactful styling details like the Jewel Eye headlights and sharp grille. This gives your SUV a sporty image while emphasizing its premium accents.

The INFINITI QX55 overall is a more rounded and curvy SUV, while the Acura RDX is set apart by its angular and sporty style. Which suits your tastes the best?