Certified Benz & Beemer Compares 2017 BMW X5 VS 2017 Lexus RX Near Scottsdale, AZ

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2017 BMW X5

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2017 Lexus RX

Safety Comparison

The X5 has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The RX Series doesn’t offer a whiplash protection system.

A passive infrared night vision system optional on the X5 helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The RX Series doesn’t offer a night vision system.

The X5’s optional 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 RX Series doesn’t offer a driver alert monitor.

Both the X5 and the RX Series have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, 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.

Warranty Comparison

The X5’s corrosion warranty is 6 years longer than the RX Series’ (12 vs. 6 years).

BMW pays for scheduled maintenance on the X5 for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Lexus only pays for the first scheduled maintenance visit on the RX Series.

There are over 77 percent more BMW dealers than there are Lexus dealers, which makes it much easier should you ever need service under the X5’s warranty.

Reliability Comparison

The battery on the X5 is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the X5’s battery 20 to 30 degrees cooler, its life is increased by years. The RX Series’ battery is in the hot engine compartment.

J.D. Power and Associates rated the X5 first among midsize premium SUVs in their 2016 Initial Quality Study. The RX Series was rated third.

J.D. Power and Associates’ 2016 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Lexus vehicles. J.D. Power ranks BMW fifth in initial quality, above the industry average. With 2 more problems per 100 vehicles, Lexus is ranked 7th.

Engine Comparison

The X5 s/xDrive35i’s standard 3.0 turbo 6 cyl. produces 5 more horsepower (300 vs. 295) and 32 lbs.-ft. more torque (300 vs. 268) than the RX 350’s standard 3.5 DOHC V6. The X5 xDrive50i’s standard 4.4 turbo V8 produces 137 more horsepower (445 vs. 308) than the RX 450h’s standard 3.5 DOHC V6 hybrid.

The X5’s 3.0 turbo diesel produces 145 lbs.-ft. more torque (413 vs. 268) than the RX 350’s standard 3.5 DOHC V6.

As tested in Motor Trend the X5 s/xDrive35i is faster than the RX 350:



RX Series

Zero to 60 MPH

5.9 sec

6.8 sec

Quarter Mile

14.5 sec

15.1 sec

Speed in 1/4 Mile

95.1 MPH

92.7 MPH

Fuel Economy and Range Comparison

Regardless of its engine, regenerative brakes improve the X5’s fuel efficiency by converting inertia back into energy instead of wasting it. Lexus only offers a regenerative brake system on the RX Series Hybrid.

Regardless of its engine, the X5’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) Lexus only offers an automatic engine start/stop system on the RX Series Hybrid.

The X5 has 5.2 gallons more fuel capacity than the RX Series Hybrid’s standard fuel tank (22.4 vs. 17.2 gallons), for longer range between fill-ups. The X5 has 3.2 gallons more fuel capacity than the RX Series’ standard fuel tank (22.4 vs. 19.2 gallons).

Brakes and Stopping Comparison

For better stopping power the X5’s front brake rotors are larger than those on the RX Series:



X5 xDrive50i

RX Series

Front Rotors

13.1 inches

15.2 inches

12.9 inches

Rear Rotors

12.6 inches

13.6 inches

13.3 inches

The X5 stops much shorter than the RX Series:



RX Series


60 to 0 MPH

110 feet

123 feet

Motor Trend

Tires and Wheels Comparison

For better traction, the X5 has larger standard tires than the RX Series (255/50R19 vs. 235/65R18). The X5’s optional tires are larger than the largest tires available on the RX Series (F:275/40R20 & R:315/35R20 vs. 235/65R18).

The X5’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the RX Series’ standard 65 series tires. The X5’s optional 275/40R20 front and 315/35R20 rear tires have a lower 40 series front and 35 series rear profile than the RX Series’ optional 55 series tires.

For better ride, handling and brake cooling the X5 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the RX Series.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the X5 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The RX Series doesn’t offer run-flat tires.

Suspension and Handling Comparison

The X5 offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Lexus doesn’t offer an active suspension on the RX Series.

The X5 has a standard automatic rear load leveling suspension to keep ride height level with a heavy load or when towing. The RX Series doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the X5’s wheelbase is 5.7 inches longer than on the RX Series (115.5 inches vs. 109.8 inches).

The X5’s front to rear weight distribution is more even (50% to 50%) than the RX Series’ (57% to 43%). This gives the X5 more stable handling and braking.

The X5 xDrive35d xDrive handles at .82 G’s, while the RX 350 pulls only .79 G’s of cornering force in a Motor Trend skidpad test.

The X5 xDrive50i xDrive executes Motor Trend’s “Figure Eight” maneuver quicker than the RX 350 (26.3 seconds @ .72 average G’s vs. 27.1 seconds @ .63 average G’s).

Passenger Space Comparison

The X5 offers optional seating for 7 passengers; the RX Series can only carry 5.

The X5 has 1.1 inches more front headroom, 2.7 inches more front shoulder room and .7 inches more rear shoulder room than the RX Series.

Cargo Capacity Comparison

The X5’s cargo area provides more volume than the RX Series.



RX Series

Third Seat Removed

35.8 cubic feet

18.4 cubic feet

Second Seat Folded

76.7 cubic feet

56.3 cubic feet

The X5’s rear cargo window opens separately from the rest of the tailgate door to allow quicker loading of small packages. The RX Series’ rear cargo window doesn’t open.

Ergonomics Comparison

The X5’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 RX Series’ standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the X5 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The RX Series doesn’t offer heated windshield washer nozzles.

The RX Series’ optional cornering lamps activate a lamp on the front corner when the turn signal is activated. The X5’s standard adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

The X5’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 RX Series doesn’t offer an automated parking system.

Economic Advantages Comparison

Insurance will cost less for the X5 owner. The Car Book by Jack Gillis rates the X5 with a number “3” insurance rate while the RX Series is rated higher at a number “5” rate.

According to The Car Book by Jack Gillis, the X5 is less expensive to operate than the RX Series because typical repairs cost much less on the X5 than the RX Series, including $393 less for a water pump, $134 less for a starter and $925 less for a timing belt/chain.

Recommendations Comparison

J.D. Power and Associates rated the X5 second among midsize premium SUVs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The RX Series isn’t in the top three.

The X5 is ranked first in its class and received the 2015 “Total Quality Award.” The RX Series is not ranked.

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