Certified Benz & Beemer Compares 2015 BMW X1 VS 2015 Acura RDX Near Scottsdale, AZ

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2015 BMW X1

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VS

2015 Acura RDX

Safety Comparison

The X1 has standard BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The RDX doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the X1 and the RDX 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 and available all-wheel drive.

Warranty Comparison

The X1’s corrosion warranty is 7 years longer than the RDX’s (12 vs. 5 years).

BMW pays for scheduled maintenance on the X1 for 4 years and 50,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Acura doesn’t pay scheduled maintenance for the RDX.

There are over 28 percent more BMW dealers than there are Acura dealers, which makes it easier should you ever need service under the X1’s warranty.

Reliability Comparison

The camshafts in the X1’s engine are driven by a hardened steel chain, with no maintenance needs. The RDX’s camshafts are driven by a rubber belt that needs periodic replacement. If the RDX’s cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.

To reliably power the ignition and other systems and to recharge the battery, the X1 has a standard 210-amp alternator. The RDX’s 130-amp alternator isn’t as powerful.

The battery on the X1 is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the X1’s battery 20 to 30 degrees cooler, its life is increased by years. The RDX’s battery is in the hot engine compartment.

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without their vehicle while it’s being repaired. Consumer Reports predicts that the X1’s reliability will be 10% better than the RDX.

J.D. Power and Associates’ 2014 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 8th in initial quality, above the industry average. With 23 more problems per 100 vehicles, Acura is ranked 25th, below the industry average.

Engine Comparison

The X1 sDrive/xDrive28i’s standard 2.0 turbo 4 cyl. produces 9 lbs.-ft. more torque (260 vs. 251) than the RDX’s 3.5 SOHC V6. The X1 xDrive35i’s standard 3.0 turbo 6 cyl. produces 27 more horsepower (300 vs. 273) and 49 lbs.-ft. more torque (300 vs. 251) than the RDX’s 3.5 SOHC V6.

As tested in Motor Trend the X1 xDrive35i 3.0 turbo 6 cyl. is faster than the Acura RDX:

X1

RDX

Zero to 60 MPH

5.3 sec

6.3 sec

Quarter Mile

14.1 sec

14.9 sec

Speed in 1/4 Mile

96 MPH

93.9 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the X1 gets better fuel mileage than the RDX:

X1

RDX

2WD

2.0 turbo 4 cyl./8-spd Auto

23 city/34 hwy

20 city/28 hwy

3.5 V6/Auto

4WD

2.0 turbo 4 cyl./8-spd Auto

22 city/32 hwy

19 city/27 hwy

3.5 V6/Auto

Regenerative brakes improve the X1’s fuel efficiency by converting inertia back into energy instead of wasting it. The RDX doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the X1 s/xDrive28i’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The RDX doesn’t offer an automatic engine start/stop system.

Brakes and Stopping Comparison

For better stopping power the X1 xDrive35i’s front brake rotors are larger than those on the RDX:

X1 xDrive35i

RDX

Front Rotors

13.7 inches

12.3 inches

Rear Rotors

13.2 inches

12 inches

The X1’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the RDX are solid, not vented.

Tires and Wheels Comparison

The X1’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 RDX’s standard 60 series tires. The X1’s optional 225/35R19 front and 255/30R19 rear tires have a lower 35 series front and 30 series rear profile than the RDX’s 60 series tires.

For better ride, handling and brake cooling the X1 offers optional 19-inch wheels. The RDX’s largest wheels are only 18-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the X1 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The RDX doesn’t offer run-flat tires.

Suspension and Handling Comparison

For a smoother ride and more stable handling, the X1’s wheelbase is 3 inches longer than on the RDX (108.7 inches vs. 105.7 inches).

The X1’s front to rear weight distribution is more even (49.4% to 50.6%) than the RDX’s (59% to 41%). This gives the X1 more stable handling and braking.

The X1 xDrive28i xDrive handles at .81 G’s, while the RDX AWD pulls only .77 G’s of cornering force in a Motor Trend skidpad test.

The X1 xDrive35i xDrive executes Motor Trend’s “Figure Eight” maneuver 1.1 seconds quicker than the RDX AWD (26.7 seconds @ .69 average G’s vs. 27.8 seconds @ .58 average G’s).

For better maneuverability, the X1’s turning circle is 1.9 feet tighter than the RDX’s (37.1 feet vs. 39 feet). The X1 xDrive’s turning circle is .3 feet tighter than the RDX’s (38.7 feet vs. 39 feet).

Chassis Comparison

The X1 is 7 inches shorter than the RDX, making the X1 easier to handle, maneuver and park in tight spaces.

Passenger Space Comparison

The X1 has 2.6 inches more front headroom and 1.6 inches more rear headroom than the RDX.

For enhanced passenger comfort on long trips the X1’s rear seats recline. The RDX’s rear seats don’t recline.

Ergonomics Comparison

The power windows standard on both the X1 and the RDX have locks to prevent small children from operating them. When the lock on the X1 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The RDX prevents the driver from operating the other windows just as it does the other passengers.

The X1’s front and rear power windows all lower with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The RDX’s rear power window switches have to be held the entire time to open them fully.

The X1’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 RDX’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The X1 offers available headlight washers to keep headlight output high. The RDX doesn’t offer headlight washers.

While driving with high beams on, sensitive light sensors available for the X1 detect other vehicles which could be blinded and automatically switch to low beams. The RDX doesn’t offer automatic dimming high beams.

To help drivers avoid possible obstacles, the X1 offers optional cornering lights to illuminate around corners when the turn signals are activated. The RDX doesn’t offer cornering lights. The X1 also offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

The X1 offers optional automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The RDX has an automatic rear view mirror, but its side mirrors don’t dim.

On extremely cold Winter days, the X1’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the vehicle heater warms up. The RDX doesn’t offer a heated steering wheel.

Economic Advantages Comparison

According to The Car Book by Jack Gillis, the X1 is less expensive to operate than the RDX because it costs $648 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the X1 than the RDX, including $670 less for a power steering pump.

Recommendations Comparison

Consumer Reports® recommends both the BMW X1 and the Acura RDX, based on reliability, safety and performance.

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