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For enhanced safety, the front and rear seat shoulder belts of the Audi A6 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Acura TLX doesn’t offer pretensioners for the rear seat belts.
The A6 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 TLX 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. But it costs extra on the TLX.
A passive infrared night vision system optional on the A6 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 TLX doesn’t offer a night vision system.
Both the A6 and the TLX have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available blind spot warning systems, around view monitors and rear cross-path warning.
The Audi A6 weighs 428 to 761 pounds more than the Acura TLX. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
The A6’s corrosion warranty is 7 years longer than the TLX’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’s warranty.
A hardened steel chain, with no maintenance needs, drives the camshafts in the A6’s engine. A rubber belt that needs periodic replacement drives the TLX 3.5 SOHC V6’s camshafts. If the TLX’s cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.
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.
The A6’s 3.0 turbo V6 hybrid produces 129 more horsepower (335 vs. 206) and 187 lbs.-ft. more torque (369 vs. 182) than the TLX’s standard 2.4 DOHC 4 cyl. The A6’s 3.0 turbo V6 hybrid produces 45 more horsepower (335 vs. 290) and 102 lbs.-ft. more torque (369 vs. 267) than the TLX’s optional 3.5 SOHC V6.
On the EPA test cycle the A6 3.0T gets better fuel mileage than the TLX SH-AWD (22 city/29 hwy vs. 20 city/29 hwy).
Regenerative brakes improve the A6’s fuel efficiency by converting inertia back into energy instead of wasting it. The TLX doesn’t offer a regenerative braking system.
The A6 has 2.1 gallons more fuel capacity than the TLX (19.3 vs. 17.2 gallons), for longer range between fill-ups.
For better stopping power the A6’s brake rotors are larger than those on the TLX:
The A6’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the TLX are solid, not vented.
For better traction, the A6 has larger standard tires than the TLX (245/45R19 vs. 225/55R17). The A6’s optional tires are larger than the largest tires available on the TLX (255/40R20 vs. 245/40R19).
The A6’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the TLX’s standard 55 series tires. The A6 Prestige’s optional tires have a lower 35 series profile than the TLX A-Spec’s 40 series tires.
For better ride, handling and brake cooling the A6 has standard 19-inch wheels. Smaller 17-inch wheels are standard on the TLX. The A6 Prestige’s optional 21-inch wheels are larger than the 19-inch wheels on the TLX A-Spec.
The A6 offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The TLX’s suspension doesn’t offer adjustable shock absorbers.
For a smoother ride and more stable handling, the A6’s wheelbase is 5.8 inches longer than on the TLX (115.1 inches vs. 109.3 inches).
For better handling and stability, the track (width between the wheels) on the A6 is 2.4 inches wider in the front and .6 inches wider in the rear than on the TLX.
For better maneuverability, the A6’s turning circle is 2.4 feet tighter than the TLX V6’s (36.4 feet vs. 38.8 feet). The A6’s turning circle is 3.1 feet tighter than the TLX SH-AWD’s (36.4 feet vs. 39.5 feet).
The A6 has .8 inches more front headroom, .3 inches more front shoulder room, 1.4 inches more rear headroom, 2.9 inches more rear legroom and 1.1 inches more rear shoulder room than the TLX.
To make loading and unloading groceries and cargo easier, especially for short adults, the A6 Prestige has a standard power trunk, which opens and closes automatically by pressing a button, or optionally by just kicking your foot under the back bumper, completely leaving your hands free. The TLX doesn’t offer a power trunk.
The engine in the A6 is mounted longitudinally (North-South), instead of sideways, as in the TLX. This makes it easier to service and maintain, because there are no rear spark plugs and 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.
The A6 Prestige has a standard heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The TLX doesn’t offer a heads-up display.
The A6’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 TLX’s standard 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 offers available headlight washers to keep headlight output high. The TLX doesn’t offer headlight washers.
A power rear sunshade is standard in the A6 to help block heat and glare for the rear passengers. The TLX doesn’t offer a rear sunshade.
© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.
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