INFINITI QX55 vs Lexus RX 350: Luxury SUV Comparison for Chicago Drivers

Looking for a luxury crossover means balancing comfort, power, and style against what you can afford and what you need daily. The 2025 INFINITI QX55 and 2026 Lexus RX 350 represent distinct takes on premium SUV design — one with a sporty, sloping profile and the other with a more classic luxury stance — but both offer high-end features and good performance. Your preference will ultimately depend on your lifestyle needs.

Design and Interior Comfort

The QX55 stands out thanks to its sporty silhouette and dramatically sloping roofline. The interior features standard leather seats with four-way power lumbar support and driver’s seat memory settings that return everything to its original position after someone else has been behind the wheel. The RX 350 has a more traditional SUV shape with synthetic NuLuxe seats in lower trims, while the memory function is reserved for higher-priced models.

The QX55 offers 39.9 inches of front headroom, a generous 38.7 inches of rear legroom, and 57.1 inches of shoulder space in back. The RX has 39.5 inches, 37.4 inches, and 56.5 inches, respectively. With the QX55, you’ll also benefit from tri-zone climate control, so everyone can set their own perfect temperature. The leather-appointed cabin can be wrapped in soft, semi-aniline leather on the LUXE trim, and color choices include deep Graphite or bold Monaco Red.

The QX55’s Zero Gravity Seats reduce pressure points and combat fatigue, while the standard heated front seats warm up quickly — perfect when January arrives in Illinois. You’ll also get eight-way power adjustments and auto-entry/exit assist, which moves the seat back when you’re getting in or out. The RX 350 matches many of these comforts but skips the standard four-way lumbar support and the handy entry/exit feature.

Performance and Driving Dynamics

The QX55 has a 2.0-liter VC-Turbo that produces 268 horsepower and 280 lb-ft of torque. The Lexus counters with a 2.4-liter turbocharged engine that produces 275 horsepower and 317 lb-ft of torque. INFINITI pairs its engine with a smooth continuously variable transmission that includes a manual shift mode — handy when you want more control on tricky highway ramps or winding suburban roads. Lexus retains a traditional eight-speed automatic transmission, which some enthusiasts prefer for its familiar gear shifts.

The big difference is traction. Every QX55 comes standard with Intelligent All-Wheel Drive (AWD). The system constantly shifts power between front and rear wheels to keep you planted, whether you’re facing spring downpours or snowy mall parking lots. With the RX 350, you start with front-wheel drive and pay extra to add AWD capability, which isn’t ideal when winter hits hard. The QX55 accelerates from 0 to 60 mph in about 6.4 seconds, allowing you to merge quickly onto I-90 during rush hour.

The QX55 achieves 22 mpg in city driving and 28 mpg on highways, averaging 25 mpg combined. That matches what the front-drive RX 350 delivers and beats Lexus’ AWD models, so you won’t pay a fuel penalty for that standard all-wheel traction during drives downtown or weekend trips to suburban shopping centers.

Technology and Safety Features

The QX55 has two digital screens: an 8-inch upper touch screen and a 7-inch lower display. This setup keeps your navigation separate from climate controls, avoiding the cluttered look of all-in-one systems. You’ll get a Wi-Fi hot spot, wireless phone charging pad, four USB ports, Siri voice control, and even a HomeLink system to open your garage door. The Lexus features a single, larger 14-inch touch screen, along with a 12.3-inch information display, wireless Apple CarPlay and Android Auto, and 12 speakers.

The QX55’s smart safety tech comes in handy in Chicago traffic. The standard safety package features collision warnings, auto braking, pedestrian detection, adaptive cruise control, blind-spot alerts, cross-traffic warnings, lane departure alerts, a backup camera, auto high beams, and parking sensors.

Its Predictive Forward Collision Warning watches the car right in front of you and the vehicle ahead of it too, giving you more time to react when traffic suddenly jams up on the Kennedy or Lake Shore Drive. The system pairs with forward emergency braking to help avoid rear-ending someone during stop-and-go driving. For long highway hauls, ProPILOT Assist combines adaptive cruise control with lane-keeping. The Lexus comes with Safety System+ 3.0, which features similar collision-avoiding technology.

Crash tests give the QX55 a four-star rating from the National Highway Traffic Safety Administration in frontal impacts and Good marks from the Insurance Institute for Highway Safety in moderate overlap crashes, with an Acceptable score in their updated side-impact tests.

Cargo Space and Everyday Practicality

Despite the sleek roofline, the QX55 gives you more total cargo space — 54.1 cubic feet compared to the RX 350’s 46.2 cubic feet. With the back seats up, the QX55 offers 26.9 cubic feet of cargo space, which is slightly less than the RX’s 29.6 cubic feet. However, the INFINITI has the advantage when the seats are folded down.

Both SUVs offer split-folding back seats to accommodate people and cargo, but the QX55 makes loading easier with its wider opening and lower floor height. If you need to tow, it’s worth noting that the RX 350 can pull up to 3,500 pounds, while the QX55 can be equipped with a Lifestyle Receiver hitch for carrying bikes or camping gear.

Pricing and Value

The 2025 QX55 is available in three trims: the LUXE ($50,150), ESSENTIAL ($55,100), and SENSORY ($58,650). Even the base trim comes standard with real leather seats, heated power-adjustable front chairs, dual screens, Wi-Fi capability, and wireless phone charging. The 2026 RX offers seven trims, from the RX 350 ($51,175) to the 350 F-SPORT Handling ($59,950).

If you’re looking for long-term value, the QX55 backs you up with a four-year/60,000-mile limited warranty and extends powertrain coverage to six years/70,000 miles, providing solid protection for your daily commutes or family adventures. When you consider the standard AWD, leather interior, and bigger cargo space, the QX55 gives you more for your money than similarly priced luxury SUVs. Plus, its fuel economy numbers help keep costs down while still delivering the performance you expect from a premium vehicle.

Discover Your Perfect Luxury Crossover at INFINITI of Hoffman Estates

If you want year-round grip, head-turning style, and practical luxury touches, the 2025 INFINITI QX55 strikes the perfect balance between performance, comfort, and daily usability. To feel the difference for yourself, contact us and schedule a test-drive at INFINITI of Hoffman Estates. Our team will answer any questions you may have and help you select the trim that best suits your lifestyle.