For enhanced safety, the front seat shoulder belts of the Infiniti QX50 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW X3 doesn’t offer height-adjustable seat belts.
Both the QX50 and the X3 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available all wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems and around view monitors.
The QX50 comes with a full 4 year/60,000 mile basic warranty, which covers the entire truck and includes 24 hour roadside assistance. The X3’s 4 year/50,000 mile basic warranty expires 10,000 miles sooner.
Infiniti’s powertrain warranty covers the QX50 2 years and 20,000 miles longer than BMW covers the X3. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the X3 ends after only 4 years or 50,000 miles.
J.D. Power and Associates’ 2016 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than BMW vehicles. J.D. Power ranks Infiniti 13th in reliability, above the industry average. With 6 more problems per 100 vehicles, BMW is ranked 14th.
The QX50’s 3.7 DOHC V6 produces 85 more horsepower (325 vs. 240) and 7 lbs.-ft. more torque (267 vs. 260) than the X3 s/xDrive28i’s standard 2.0 turbo 4 cyl. The QX50’s 3.7 DOHC V6 produces 25 more horsepower (325 vs. 300) than the X3 xDrive35i’s standard 3.0 turbo 6 cyl.
The QX50 has 2.3 gallons more fuel capacity than the X3 (20 vs. 17.7 gallons), for longer range between fill-ups.
For a smoother ride and more stable handling, the QX50’s wheelbase is 2.8 inches longer than on the X3 (113.4 inches vs. 110.6 inches).
For better maneuverability, the QX50’s turning circle is 1.8 feet tighter than the X3’s (37.2 feet vs. 39 feet). The QX50 AWD’s turning circle is .2 feet tighter than the X3’s (38.8 feet vs. 39 feet).
The design of the Infiniti QX50 amounts to more than styling. The QX50 has an aerodynamic coefficient of drag of .33 Cd. That is lower than the X3 (.36) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the QX50 get better fuel mileage.
Pressing a switch automatically raises the QX50’s optional rear seats, to make changing between cargo and passengers easier. The X3 doesn’t offer automatic folding seats.
The QX50’s optional easy entry system raises the steering wheel and glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The X3 doesn’t offer an easy entry system.
To improve rear visibility by keeping the rear window clear, the QX50 has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the X3 only has an intermittent setting, so in a hard rain visibility isn’t as good.
The QX50 has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning costs extra on the X3.