Quick Summary
The 2026 BMW X3 offers a wider engine range topping out at 393 horsepower, while the Acura RDX runs a single 272-horsepower engine paired with standard Super Handling All-Wheel Drive across every trim. Both SUVs pack strong safety tech and a driver-focused cabin, but the X3’s step-up M50 xDrive trim gives it a clear power advantage over the single-engine RDX lineup. For Long Island drivers who want more performance range, the X3 comes out ahead.
The 2026 BMW X3 and the Acura RDX both compete in the compact luxury SUV segment, and Long Island shoppers often cross-reference these two models. The X3 offers a broader engine lineup and a refined, driver-focused cabin, while the RDX sticks to a single turbocharged engine and leans on its Super Handling All-Wheel Drive system for cornering grip.
Both SUVs deliver strong daily comfort, but the differences in power range, tech integration, and chassis tuning show up once a driver spends real time behind the wheel. Shoppers who want to see BMW’s current lineup can browse the new-vehicle inventory before narrowing down a trim.
This comparison breaks down the design, technology, safety, and performance of these two SUVs to help Long Island drivers weigh them against each other.
Design & Style
The X3 carries a sculpted, athletic profile with a sharp-edged kidney grille, angular LED headlights, and 19-inch wheels wrapped in satin aluminum trim. The cabin favors a driver-focused layout, with tightly stitched materials and controls angled toward the driver’s seat.
The RDX takes a sportier stance, with a frameless Diamond Pentagon grille, Jewel Eye LED headlights, and LED-illuminated Dragon Tail taillights that give the rear a distinctive signature. Inside, the 2026 refresh brings updated cabin textures, a redesigned center console, and a 10.5-inch HD center display that anchors the dashboard.
Both SUVs project a sporty, premium look, but the X3’s proportions read as more substantial, while the RDX leans into sharper, more aggressive detailing throughout.
Technology & Safety
BMW equips the X3 with a full suite of standard driver assistance features, including Active Blind Spot Detection, Lane Departure Warning, and Frontal Collision Warning with City Collision Mitigation. Active Driving Assistant integrates these systems into a single interface that responds quickly in both highway driving and stop-and-go traffic.
The RDX brings its own robust safety package with the standard AcuraWatch suite, which includes Collision Mitigation Braking, Adaptive Cruise Control with Low-Speed Follow, Lane Keeping Assist, and Blind Spot Information System. The cabin also adds enhanced noise cancellation and insulation for 2026, along with a 16-speaker premium audio system on higher trims.
Both automakers pack extensive safety tech into their SUVs, but the X3’s system integrates more consistently across daily commuting and highway driving.
Performance
The X3 30 xDrive uses a 2.0-liter TwinPower Turbo four-cylinder engine with a 48V mild-hybrid system, producing 255 horsepower and 295 lb-ft of torque through an 8-speed STEPTRONIC automatic. Standard xDrive all-wheel drive keeps the chassis composed through corners and in poor weather.
Drivers who want more can step up to the X3 M50 xDrive, which swaps in a 3.0-liter turbocharged inline-six producing 393 horsepower and 428 lb-ft of torque, backed by adaptive suspension and M Sport brakes. The RDX uses a single 2.0-liter turbocharged four-cylinder engine across all trims, producing 272 horsepower and 280 lb-ft of torque, paired with a 10-speed automatic and standard Super Handling All-Wheel Drive.
The RDX’s single engine edges past the base X3 on power, but the X3’s M50 xDrive trim pulls well ahead of anything the RDX lineup currently offers.
The Bottom Line
Choosing between these two SUVs comes down to how much performance range a driver wants. The RDX suits buyers who want strong standard power, torque-vectoring all-wheel drive, and a straightforward lineup without needing to compare engine tiers.
The X3 makes more sense for drivers who want the option to start efficient and step up to serious performance later, along with a cabin tuned more directly around the driver. For Long Island drivers who value that flexibility, the X3 gives more room to match a vehicle to a specific driving style.
Schedule a Test Drive Today
Spec sheets only tell part of the story, and the difference between these two SUVs shows up most clearly behind the wheel. The 8-speed transmission, xDrive all-wheel drive, and cabin materials all make a stronger impression once a driver spends real time on the road.
Competition BMW of Smithtown carries the full 2026 X3 lineup, from the efficient 30 xDrive to the high-output M50 xDrive, and the sales team can walk through trims, financing, and current offers in detail. Long Island drivers ready to compare these SUVs firsthand can schedule a test drive at the Saint James showroom today.
FAQs
Does the Acura RDX offer more than one engine option?
No. Every 2026 RDX trim uses the same 2.0-liter turbocharged engine, producing 272 horsepower and 280 lb-ft of torque. Acura pairs it with standard Super Handling All-Wheel Drive.
How does the X3 M50 xDrive compare to the RDX’s power output?
The X3 M50 xDrive produces 393 horsepower, well above the RDX’s 272-horsepower engine. Drivers who want a stronger performance option in the X3 lineup have that choice, unlike RDX buyers.
Do both SUVs come with standard all-wheel drive?
Yes. The X3 includes BMW’s xDrive system on every trim, and the RDX pairs its engine with standard Super Handling All-Wheel Drive as well.
