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For enhanced safety, the front and rear seat shoulder belts of the Audi Q8 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 Buick Envision doesn’t offer pretensioners for the rear seat belts.
The Q8’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Envision doesn’t offer pre-crash pretensioners.
The Q8 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 Envision 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 Q8. But it costs extra on the Envision.
A passive infrared night vision system optional on the Q8 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 Envision doesn’t offer a night vision system.
Both the Q8 and the Envision have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
The Audi Q8 weighs 921 to 1249 pounds more than the Buick Envision. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
The Q8’s corrosion warranty is 6 years longer than the Envision’s (12 vs. 6 years).
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Buick vehicles. Consumer Reports ranks Audi 12 places higher in reliability than Buick.
The Q8’s 3.0 turbo V6 hybrid produces 138 more horsepower (335 vs. 197) and 177 lbs.-ft. more torque (369 vs. 192) than the Envision’s standard 2.5 DOHC 4 cyl. The Q8’s 3.0 turbo V6 hybrid produces 83 more horsepower (335 vs. 252) and 74 lbs.-ft. more torque (369 vs. 295) than the Envision Premium’s standard 2.0 turbo 4 cyl.
Regenerative brakes improve the Q8’s fuel efficiency by converting inertia back into energy instead of wasting it. The Envision doesn’t offer a regenerative braking system.
The Q8 has 5.2 gallons more fuel capacity than the Envision (22.5 vs. 17.3 gallons), for longer range between fill-ups.
For better stopping power the Q8’s brake rotors are larger than those on the Envision:
The Q8’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Envision are solid, not vented.
For better traction, the Q8 has larger standard tires than the Envision (275/50R20 vs. 225/60R18). The Q8’s optional tires are larger than the largest tires available on the Envision (285/45R21 vs. 235/50R19).
The Q8’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 Envision’s standard 60 series tires. The Q8’s optional tires have a lower 40 series profile than the Envision Premium’s 50 series tires.
For better ride, handling and brake cooling the Q8 has standard 20-inch wheels. Smaller 18-inch wheels are standard on the Envision. The Q8’s optional 22-inch wheels are larger than the 19-inch wheels on the Envision Premium.
The Q8 has a standard 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 or off-road. The Envision’s suspension doesn’t offer adjustable shock absorbers.
The Q8 has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Envision doesn’t offer variable-assist power steering.
For a smoother ride and more stable handling, the Q8’s wheelbase is 9.6 inches longer than on the Envision (117.9 inches vs. 108.3 inches).
For better handling and stability, the track (width between the wheels) on the Q8 is 4.1 inches wider in the front and 4.8 inches wider in the rear than on the Envision.
The Q8 has .8 inches more front legroom, 2.5 inches more front shoulder room, 2.7 inches more rear legroom and 2.7 inches more rear shoulder room than the Envision.
The Q8 has a much larger cargo area with its rear seat up than the Envision with its rear seat up (28.6 vs. 26.9 cubic feet). The Q8 has a much larger cargo area with its rear seat folded than the Envision with its rear seat folded (67.5 vs. 57.3 cubic feet).
A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the Q8. The Envision doesn’t offer locking storage for small valuables.
The Q8’s standard towing capacity is much higher than the Envision’s (7700 vs. 1500 pounds).
The engine in the Q8 is mounted longitudinally (North-South), instead of sideways, as in the Envision. 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 Buick. J.D. Power ranks Audi third in service department satisfaction. With a 21% lower rating, Buick is ranked 9th.
Unlike the driver-only memory system in the Envision Essence/Premium, the Q8 offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The Q8’s front and rear power windows all open or close 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 Envision’s passenger windows don’t close automatically.
If the windows are left open on the Q8 Premium Plus/Prestige the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Envision can only operate the windows from inside the vehicle, with the ignition on.
The Q8’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 Envision’s standard manually variable intermittent wipers have to be constantly adjusted.
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Q8 Prestige has standard headlight washers to keep headlight output high. The Envision doesn’t offer headlight washers.
A manual rear sunshade is optional in the Q8 to help block heat and glare for the rear passengers. The Envision doesn’t offer a rear sunshade.
© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.
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