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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 Nautilus doesn’t offer pre-crash pretensioners.
Both the A6 Allroad and Nautilus 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 Nautilus’ 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.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the A6 Allroad. But it costs extra on the Nautilus.
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 Nautilus doesn’t offer a night vision system.
Both the A6 Allroad and the Nautilus 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, post-collision automatic braking systems, daytime running lights, lane departure warning systems, rearview cameras, available blind spot warning systems and rear cross-path warning.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the A6 Allroad its highest rating: “Top Pick Plus” for 2020, a rating granted to only 32 vehicles tested by the IIHS. The Nautilus last would have qualified as only a standard “Top Pick” in 2017.
The A6 Allroad’s corrosion warranty is 7 years longer than the Nautilus’ (12 vs. 5 years).
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 Lincoln vehicles. J.D. Power ranks Audi 8th in reliability, above the industry average. With 23 more problems per 100 vehicles, Lincoln is ranked 19th.
From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Audi vehicles are more reliable than Lincoln vehicles. Consumer Reports ranks Audi 1 place higher in reliability than Lincoln.
The A6 Allroad’s 3.0 turbo V6 hybrid produces 85 more horsepower (335 vs. 250) and 89 lbs.-ft. more torque (369 vs. 280) than the Nautilus’ standard 2.0 turbo 4-cylinder.
On the EPA test cycle the A6 Allroad SMG gets better fuel mileage than the Nautilus with its standard engine AWD (20 city/26 hwy vs. 20 city/25 hwy).
Regenerative brakes improve the A6 Allroad’s fuel efficiency by converting inertia back into energy instead of wasting it. The Nautilus doesn’t offer a regenerative braking system.
The A6 Allroad has 1.3 gallons more fuel capacity than the Nautilus (19.3 vs. 18 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 Nautilus 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 Nautilus doesn’t offer launch control.
For better stopping power the A6 Allroad’s front brake rotors are larger than those on the Nautilus:
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 standard on the Nautilus are solid, not vented.
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 Nautilus’ standard 60 series tires.
For better ride, handling and brake cooling the A6 Allroad has standard 20-inch wheels. Smaller 18-inch wheels are standard on the Nautilus.
For a smoother ride and more stable handling, the A6 Allroad’s wheelbase is 3 inches longer than on the Nautilus (115.2 inches vs. 112.2 inches).
For better maneuverability, the A6 Allroad Prestige w/All-Wheel Steering’s turning circle is 2.9 feet tighter than the Nautilus’ (36.4 feet vs. 39.3 feet).
The A6 Allroad is 7.3 inches shorter in height than the Nautilus, making the A6 Allroad much easier to wash and garage and drive (lower center of gravity).
A low lift-over trunk design makes loading and unloading the A6 Allroad easier. The A6 Allroad’s trunk lift-over height is 27 inches, while the Nautilus’ liftover is 30 inches.
The engine in the A6 Allroad is mounted longitudinally (North-South), instead of sideways, as in the Nautilus. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.
The A6 Allroad Prestige has a standard heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Nautilus doesn’t offer a heads-up display.
The power windows standard on both the A6 Allroad and the Nautilus have locks to prevent small children from operating them. When the lock on the A6 Allroad is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Nautilus prevents the driver from operating the rear windows just as it does the other passengers.
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 Nautilus’ standard manually variable intermittent wipers have to be constantly adjusted.
The Insurance Institute for Highway Safety (IIHS) conducts detailed tests on headlights for their range both straight ahead and in curves and to be certain they don’t exceed acceptable amounts of glare to oncoming drivers. The A6 Allroad’s headlights were rated “Good” to “Acceptable” by the IIHS, while the Nautilus’ headlights are rated “Poor.”
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 Nautilus doesn’t offer headlight washers.
Manual rear side window sunshades are available in the A6 Allroad to help block heat and glare for the rear passengers. The Nautilus doesn’t offer rear side window sunshades.
When the A6 Allroad is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Nautilus’ mirror doesn’t automatically adjust for backing.
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 is only available on the Nautilus Reserve/Black Label.
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. Only the Nautilus Reserve/Black Label offers wireless charging.
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