2019 Audi Allroad vs. 2019 Acura RDX

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Audi Allroad have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Acura RDX doesn’t offer pretensioners for the rear seat belts.

The Allroad’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The RDX doesn’t offer pre-crash pretensioners.

The Allroad has a standard Audi Backguard System, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Audi Backguard System moves the headrests forward to prevent neck and spine injuries. At the same time the pretensioning seatbelts fire, removing slack from the belts. The RDX doesn’t offer a whiplash protection system.

The Allroad has standard Secondary Collision Brake Assist, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The RDX 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 Allroad. But it costs extra on the RDX.

Both the Allroad and the RDX have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, height-adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and its standard front crash prevention system, the Insurance Institute for Highway Safety grants the Allroad the rating of “Top Pick” for 2017, a rating granted to only 139 vehicles tested by the IIHS. The RDX has not been tested, yet.

Warranty

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

There are over 11 percent more Audi dealers than there are Acura dealers, which makes it easier should you ever need service under the Allroad’s warranty.

Reliability

The Audi Allroad’s engine uses a cast iron block for durability, while the RDX’s engine uses an aluminum block. Aluminum engine blocks are much more prone to warp and crack at high temperatures than cast iron.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Audi vehicles are more reliable than Acura vehicles. J.D. Power ranks Audi 13th in reliability, above the industry average. With 18 more problems per 100 vehicles, Acura is ranked 20th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Acura vehicles. Consumer Reports ranks Audi 6 places higher in reliability than Acura.

Engine

As tested in Motor Trend the Audi Allroad is faster than the Acura RDX:

 

Allroad

RDX

Zero to 60 MPH

5.5 sec

7.1 sec

Quarter Mile

14.1 sec

15.5 sec

Speed in 1/4 Mile

97.6 MPH

90.7 MPH

Transmission

The Allroad offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The RDX doesn’t offer an SMG or a conventional manual transmission.

The Allroad’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 RDX doesn’t offer launch control.

Brakes and Stopping

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

 

Allroad

RDX

Front Rotors

13.3 inches

12.4 inches

Rear Rotors

13 inches

12.2 inches

The Allroad’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.

The Allroad stops much shorter than the RDX:

 

Allroad

RDX

 

70 to 0 MPH

152 feet

177 feet

Car and Driver

60 to 0 MPH

119 feet

133 feet

Motor Trend

Tires and Wheels

For better traction, the Allroad has larger tires than the RDX (245/45R18 vs. 235/55R19).

The Allroad’s tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the RDX’s standard 55 series tires.

Suspension and Handling

For a smoother ride and more stable handling, the Allroad’s wheelbase is 2.6 inches longer than on the RDX (110.9 inches vs. 108.3 inches).

The Allroad Prestige handles at .85 G’s, while the RDX A-Spec AWD pulls only .81 G’s of cornering force in a Car and Driver skidpad test.

The Allroad Premium Plus executes Motor Trend’s “Figure-Eight” maneuver 1.4 seconds quicker than the RDX AWD (26.3 seconds @ .69 average G’s vs. 27.7 seconds @ .62 average G’s).

For better maneuverability, the Allroad’s turning circle is .8 feet tighter than the RDX’s (38.1 feet vs. 38.9 feet).

Servicing Ease

The engine in the Allroad is mounted longitudinally (North-South), instead of sideways, as in the RDX. This makes it easier to service and maintain, because the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that Audi service is better than Acura. J.D. Power ranks Audi third in service department satisfaction. With a 26% lower rating, Acura is ranked 12th.

Ergonomics

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

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

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

To help drivers avoid possible obstacles, the Allroad has standard cornering lights to illuminate around corners when the turn signals are activated. The RDX doesn’t offer cornering lights.

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

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