INFINITI QX55 vs. Acura RDX
INFINITI QX55 Vs. Acura RDX Comparison & Differences
When it's time to trade up to a new luxury crossover with comfortable two-row seating and advanced features, consider the benefits of INFINITI QX55 vs. Acura RDX SUVs. These two compact models aim to thrill, both delivering over 260 horsepower from their turbocharged engines.
As you can guess, the Acura RDX vs. INFINITI QX55 comparison is a close one, and yet there are several areas where these two SUVs differ greatly. Our team at West Houston INFINITI will help you compare the personalities and specs of these two rides so you can determine which model suits your wish list better.
| 2024 INFINITI QX55 | 2024 Acura RDX | |
| Engine | 2.0L inline 4-cyl | 2.0L inline 4-cyl |
| Drivetrain | AWD | AWD |
| Horsepower | 268 | 272 |
| Torque | 280 lb-ft | 280 lb-ft |
| EPA-est. MPG | 22 / 28 / 25 (City / Hwy / Cmb)1 | 21 / 27 / 23 (City / Hwy / Cmb)2 |
| Length | 186.3 in | 187.4 in |
| Height | 63.8 in | 65.7 in |
| Ground Clearance | 8.6 in | 8.2 in |
| Turning Diameter | 36.4 ft | 38.9 ft |
| Basic Warranty | 4 yr / 60,000 mi3 | 4 yr / 50,000 mi3 |
Performance and Capability
First, let's discuss the similarities in this RDX vs. QX55 comparison. The INFINITI QX55 and Acura RDX are powered by turbocharged 2.0-liter inline four-cylinder engines.
The result is similar power outputs, with the INFINITI QX55 generating 268 horsepower, while the Acura RDX lets loose with 272 horsepower. Both produce 280 pound-feet of torque. Similarly, they each come standard with AWD, ensuring every driver has the grip and confidence to take on the road during more challenging weather conditions.
However, the new INFINITI QX55 is more fuel efficient, earning an EPA-estimated 22/28/25 MPG (City/Highway/Combined).1 The 2024 Acura RDX achieves an EPA-estimated 21/27/23 (City/Highway/Combined) in most trims,2 dipping down to 21/26/23 MPG (City/Highway) if you select the A-Spec.2 While this is not an overwhelming difference, money saved at the gas pump can always be put to better – or more fun – uses; the efficiency of the INFINITI model also allows it to have greater range between fill-ups.
Dimensions and Versatility
If you're shopping for a luxurious sport-ute like the new Acura RDX or the INFINITI QX55 luxury crossover coupe, you're likely looking for something that balances nimble handling with an accommodating cabin and flexible cargo room. That calls for another INFINITI QX55 vs. Acura RDX comparison.
It's a bit of a back-and-forth battle. The Acura SUV offers more first-row legroom, while the INFINITI QX55 provides more space for your passengers to stretch out in the second row.
Regarding cargo volume, the Acura RDX narrowly edges out the INFINITI QX55, with 29.5 cubic feet of standard cargo capacity compared to 26.9 cubic feet. This is because the bold and stylish QX55 boasts a crossover coupe silhouette with a raked roofline that gives up a bit of cargo area height in favor of a standout style.
While neither model is the most rugged off-roader of their respective lineups, we recommend the INFINITI QX55 preferentially because it offers 8.6 inches of ground clearance. It can also be better for road trips with its 36.4-foot turning diameter. By contrast, the Acura RDX has 8.2 inches of ground clearance and a turning diameter of 38.9 feet.
QX55 vs. RDX Trims Comparison
If you're considering taking home one of these two new luxury crossover SUVs for sale, then you're probably wondering what features are available. Let's compare Acura RDX and INFINITI QX55 trims.
The new INFINITI QX55 comes equipped to impress right from the start, offering an indulgent amount of perks across its three INFINITI QX55 trims:
- INFINITI QX55 LUXE AWD
- INFINITI QX55 ESSENTIAL AWD
- INFINITI QX55 SENSORY AWD
Sitting inside the cabin of the introductory trim, you'll enjoy leather-appointed seating with dark aluminum trim, heated front seats, wireless phone connectivity, and a Wi-Fi hotspot. The first row contains three separate LCD monitors, including an 8-inch INFINITI InTouch® touch-screen display. Standard ProPILOT Assist makes cruising along the highway much more relaxing.
The Acura RDX comes in the following packages or trim levels:
- Acura RDX
- Acura RDX Technology
- Acura RDX A-Spec
- Acura RDX Advance
- Acura RDX A-Spec Advance
The Acura model also comes with standard heated seating but with leatherette upholstery. It has a 7-inch color multi-informational display, wireless smartphone compatibility, and Adaptive Cruise Control.
If you're worried about random blowouts on the road, the Acura RDX comes with a temporary spare tire. The INFINITI QX55 is probably your better bet, though, since it comes with run-flat tires, not to mention a tire-specific low tire pressure warning.
Turning our eyes to the top-level trims, both models contain 16-speaker premium audio systems. The INFINITI SUV utilizes a Bose® sound system, in combination with Bose® AudioPilot 2.0, a speed-sensitive volume control system to make sure you hear your music or podcasts perfectly over the roar of traffic. The Acura RDX has an Acura/ELS Studio 3D sound system.
Both top-tier SUVs share heated and ventilated front seats, heated rear seats, and Sirius XM® subscriptions. However, the INFINITI model has an optional Dual Camera Drive Recorder.
Compare the QX55 vs. RDX Today
You can always compare INFINITI QX55 or Acura RDX SUVs against other options online before scheduling test drives at your local auto dealerships.
For those who choose the stylish and innovative new INFINITI QX55 luxury crossover, you can explore the three QX55 trim levels on-site at West Houston INFINITI. We welcome you to see our current INFINITI QX55 specials for inspiration for your upgrade. We'd also love to talk to you about the four-year/60,000-mile Basic Warranty that comes with new INFINITI vehicles, a 10,000-mile extension over the one found on the Acura model.3
Frequently Asked Questions
Which is bigger: the INFINITI QX55 or Acura RDX?
The Acura RDX is slightly bigger than the INFINITI QX55, as the Acura model is about an inch longer and two inches taller than the INFINITI luxury crossover coupe SUV. However, the INFINITI QX55 uses its slimmer dimensions to its advantage. Its tight turning diameter can tackle sharp corners more easily, and its length makes it easier to parallel park.
How many miles per gallon do the INFINITI QX55 and Acura RDX get?
The new INFINITI QX55 gets an EPA-estimated 22/28/25 MPG (City/Highway/Combined),1 exceeding the fuel efficiency of the 2024 Acura RDX, which can deliver 21/27/23 MPG (City/Highway/Combined) in its standard trim2 or 21/26/23 MPG (City/Highway/Combined)2 if you select the A-Spec. Though it has a slightly smaller fuel tank, the INFINITI QX55 has a greater range.
How do the INFINITI QX55 safety features compare to the Acura RDX?
Both the INFINITI QX55 and Acura RDX include standard suites of advanced safety systems. However, only the INFINITI QX55 boasts standard ProPILOT Assist, a driver-assist system that combines Active Lane Centering and semi-autonomous Freeway Cruise Control to offer extra support for highway cruising. Experiment with this feature during your test drive to learn how intuitive it really is.
Continue Your INFINITI QX55 Research In Houston TX:
12024 EPA Fuel Economy Estimates. Actual mileage may vary with driving conditions – use for comparison only.
2Based on 2024 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.
3Warranties listed on this webpage shall not be solely relied upon. Warranties may be subject to specific terms, restrictions, exclusions, and fees. Additional warranty information may be obtained by visiting the official website of the warranty provider. Contact our dealership for complete details.