2019 BMW X7 vs. 2019 Acura MDX

Detailed Review, Specifications & Comparison

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Safety

The X7 has standard Post-Crash Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The MDX doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the X7. But it costs extra on the MDX.

The X7’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The MDX doesn’t offer a driver alert monitor.

Both the X7 and the MDX have standard driver and passenger frontal airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras and available around view monitors.

The BMW X7 weighs 884 to 1585 pounds more than the Acura MDX. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

Warranty

The X7’s corrosion warranty is 7 years longer than the MDX’s (12 vs. 5 years).

BMW pays for scheduled maintenance on the X7 for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Acura doesn’t pay scheduled maintenance for the MDX.

There are over 27 percent more BMW dealers than there are Acura dealers, which makes it easier should you ever need service under the X7’s warranty.

Reliability

A hardened steel chain, with no maintenance needs, drives the camshafts in the X7’s engine. A rubber cam drive belt that needs periodic replacement drives the MDX’s camshafts. If the MDX’s belt breaks, the engine could be severely damaged when the pistons hit the opened valves.

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Acura vehicles. J.D. Power ranks BMW 11th in initial quality, above the industry average. With 12 more problems per 100 vehicles, Acura is ranked 20th, below the industry average.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Acura vehicles. J.D. Power ranks BMW 8th in reliability, above the industry average. With 32 more problems per 100 vehicles, Acura is ranked 20th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that BMW vehicles are more reliable than Acura vehicles. Consumer Reports ranks BMW 5 places higher in reliability than Acura.

Engine

The X7 xDrive40i’s standard 3.0 turbo 6 cyl. produces 45 more horsepower (335 vs. 290) and 63 lbs.-ft. more torque (330 vs. 267) than the MDX’s standard 3.5 SOHC V6. The X7 xDrive40i’s 3.0 turbo 6 cyl. produces 14 more horsepower (335 vs. 321) and 41 lbs.-ft. more torque (330 vs. 289) than the MDX Sport Hybrid’s standard 3.0 SOHC V6 hybrid. The X7 xDrive50i’s standard 4.4 turbo V8 produces 135 more horsepower (456 vs. 321) and 190 lbs.-ft. more torque (479 vs. 289) than the MDX Sport Hybrid’s standard 3.0 SOHC V6 hybrid.

Fuel Economy and Range

Regardless of its engine, regenerative brakes improve the X7’s fuel efficiency by converting inertia back into energy instead of wasting it. Acura only offers a regenerative brake system on the MDX Sport Hybrid.

The X7 has 2.5 gallons more fuel capacity than the MDX Sport Hybrid’s standard fuel tank (21.9 vs. 19.4 gallons), for longer range between fill-ups. The X7 has 2.4 gallons more fuel capacity than the MDX’s standard fuel tank (21.9 vs. 19.5 gallons).

Transmission

The X7’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The MDX doesn’t offer launch control.

Brakes and Stopping

The X7’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the MDX are solid, not vented.

Tires and Wheels

For better traction, the X7 has larger standard tires than the MDX (F:275/40R22 & R:315/35R22 vs. 245/60R18). The X7’s tires are larger than the largest tires available on the MDX (285/45R21 vs. 265/45R20).

The X7’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the MDX’s standard 60 series tires. The X7’s optional 275/40R22 front and 315/35R22 rear tires have a lower 40 series front and 35 series rear profile than the MDX A-Spec’s 45 series tires.

For better ride, handling and brake cooling the X7 has standard 21-inch wheels. Smaller 18-inch wheels are standard on the MDX. The X7’s optional 22-inch wheels are larger than the 20-inch wheels optional on the MDX.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the X7 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The MDX doesn’t offer run-flat tires.

Suspension and Handling

The front and rear suspension of the X7 uses air springs for a smoother, controlled ride than the MDX, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The X7 has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The X7’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The MDX doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the X7’s wheelbase is 11.2 inches longer than on the MDX (122.2 inches vs. 111 inches).

For greater off-road capability the X7 has a 1.4 inches greater minimum ground clearance than the MDX (8.7 vs. 7.3 inches), allowing the X7 to travel over rougher terrain without being stopped or damaged.

Chassis

The front grille of the X7 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The MDX doesn’t offer active grille shutters.

Passenger Space

The X7 has 3.8 inches more front headroom, .4 inches more rear headroom, 1 inch more rear legroom, 1.4 inches more third row headroom and 5.2 inches more third row legroom than the MDX.

Cargo Capacity

The X7’s cargo area provides more volume than the MDX.

 

X7

MDX

Third Seat Folded

48.6 cubic feet

43.4 cubic feet

Pressing a switch automatically lowers or raises the X7’s third row seats, to make changing between cargo and passengers easier. The MDX doesn’t offer automatic folding seats.

The X7’s rear cargo window opens separately from the rest of the tailgate door to allow quicker loading of small packages. The MDX’s rear cargo window doesn’t open.

Towing

The X7’s standard towing capacity is much higher than the MDX’s (7500 vs. 3500 pounds).

While the MDX SH-AWD Sport Hybrid is not recommended to tow, any X7 can tow a minimum of 7500 pounds.

Servicing Ease

The engine in the X7 is mounted longitudinally (North-South), instead of sideways, as in the MDX. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that BMW service is better than Acura. J.D. Power ranks BMW 8th in service department satisfaction (above the industry average). With a 12% lower rating, Acura is ranked 12th.

Ergonomics

Unlike the driver-only memory system in the MDX, the X7 offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.

The power windows standard on both the X7 and the MDX have locks to prevent small children from operating them. When the lock on the X7 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The MDX prevents the driver from operating the other windows just as it does the other passengers.

The X7’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The MDX’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

To help drivers see further while navigating curves, the X7 has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The MDX doesn’t offer cornering lights.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the X7 has standard extendable sun visors. The MDX doesn’t offer extendable visors.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the BMW X7 has a standard wireless phone charging system (Qi) for the front seat. Wireless charging costs extra on the MDX.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the BMW X7 has a standard wireless phone charging system (Qi) for the front seat. Wireless charging costs extra on the MDX.

The X7’s optional Parking Assistant can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The MDX doesn’t offer an automated parking system.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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