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For enhanced safety, the front and rear seat shoulder belts of the Audi A6 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 A6 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.
Both the A6 Allroad and RDX have child safety locks to prevent children from opening the rear doors. The A6 Allroad has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The RDX’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
The A6 Allroad has a standard Secondary Collision Brake Assist, which automatically applies 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 A6 Allroad. But it costs extra on the RDX.
A passive infrared night vision system optional on the A6 Allroad Prestige 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 RDX doesn’t offer a night vision system.
Both the A6 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, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, available blind spot warning systems and rear cross-path warning.
The Audi A6 Allroad weighs 418 to 703 pounds more than the Acura RDX. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
The A6 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 A6 Allroad’s warranty.
J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Audi vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Audi 22nd in initial quality. With 4 more problems per 100 vehicles, Acura is ranked 24th.
J.D. Power and Associates’ 2019 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 8th in reliability, above the industry average. With 47 more problems per 100 vehicles, Acura is ranked 26th.
From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Audi vehicles are more reliable than Acura vehicles. Consumer Reports ranks Audi 14 places higher in reliability than Acura.
The A6 Allroad’s 3.0 turbo V6 hybrid produces 63 more horsepower (335 vs. 272) and 89 lbs.-ft. more torque (369 vs. 280) than the RDX’s 2.0 turbo 4-cylinder.
Regenerative brakes improve the A6 Allroad’s fuel efficiency by converting inertia back into energy instead of wasting it. The RDX doesn’t offer a regenerative braking system.
The A6 Allroad has 2.2 gallons more fuel capacity than the RDX (19.3 vs. 17.1 gallons), for longer range between fill-ups.
The A6 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 A6 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.
For better stopping power the A6 Allroad’s brake rotors are larger than those on the RDX:
The A6 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.
For better traction, the A6 Allroad has larger tires than the RDX (245/45R20 vs. 235/55R19).
The A6 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.
For better ride, handling and brake cooling the A6 Allroad has standard 20-inch wheels. Smaller 19-inch wheels are standard on the RDX.
For a smoother ride and more stable handling, the A6 Allroad’s wheelbase is 6.9 inches longer than on the RDX (115.2 inches vs. 108.3 inches).
For better maneuverability, the A6 Allroad Prestige w/All-Wheel Steering’s turning circle is 2.5 feet tighter than the RDX’s (36.4 feet vs. 38.9 feet).
For enhanced passenger comfort on long trips the A6 Allroad’s rear seats recline. The RDX’s rear seats don’t recline.
The engine in the A6 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.
The A6 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 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 A6 Allroad has standard headlight washers to keep headlight output high. The RDX doesn’t offer headlight washers.
The A6 Allroad has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel costs extra on the RDX.
The A6 Allroad Prestige offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the RDX.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi A6 Allroad has a standard wireless phone charging system (Qi) in the center console. The RDX doesn’t offer wireless personal charging.
The A6 Allroad’s optional Park Steering Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The RDX doesn’t offer an automated parking system.
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