2020 Audi Q8 vs. 2020 Cadillac XT6

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/12/11

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 Cadillac XT6 doesn’t offer pretensioners for the rear seat belts.

Both the Q8 and XT6 have child safety locks to prevent children from opening the rear doors. The Q8 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 XT6’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 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 XT6 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 XT6.

When descending a steep, off-road slope, the Q8’s standard Hill Descent Assist allows you to creep down safely. The XT6 doesn’t offer Hill Descent Assist.

Both the Q8 and the XT6 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, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, available night vision systems, blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in IIHS driver-side small overlap frontal, moderate overlap frontal, side impact, rear impact and roof-crush tests, its standard front crash prevention system, its “Good” rating in the new passenger-side small overlap crash test, and its available headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the Q8 the rating of “Top Pick” for 2019, a rating granted to only 106 vehicles tested by the IIHS. The XT6 has not been tested, yet.

Warranty

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The Q8’s corrosion warranty is 6 years longer than the XT6’s (12 vs. 6 years).

Reliability

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/12/11

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 Cadillac vehicles. J.D. Power ranks Audi 8th in reliability, above the industry average. With 42 more problems per 100 vehicles, Cadillac is ranked 23rd.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks Audi 21 places higher in reliability than Cadillac.

Engine

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The Q8’s 3.0 turbo V6 hybrid produces 25 more horsepower (335 vs. 310) and 98 lbs.-ft. more torque (369 vs. 271) than the XT6’s 3.6 DOHC V6.

Fuel Economy and Range

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Regenerative brakes improve the Q8’s fuel efficiency by converting inertia back into energy instead of wasting it. The XT6 doesn’t offer a regenerative braking system.

The Q8 has 3.5 gallons more fuel capacity than the XT6 FWD’s standard fuel tank (22.5 vs. 19 gallons), for longer range between fill-ups.

Brakes and Stopping

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For better stopping power the Q8’s brake rotors are larger than those on the XT6:

Q8

XT6

Front Rotors

14.8 inches

12.6 inches

Rear Rotors

13.8 inches

12.4 inches

Tires and Wheels

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For better traction, the Q8 has larger standard tires than the XT6 (275/50R20 vs. 235/55R20). The Q8’s optional tires are larger than the largest tires available on the XT6 (285/45R21 vs. 265/45R21).

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 XT6’s standard 55 series tires. The Q8’s optional tires have a lower 40 series profile than the XT6 Sport’s optional 45 series tires.

For better ride, handling and brake cooling the Q8 offers optional 22-inch wheels. The XT6’s largest wheels are only 21-inches.

Suspension and Handling

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For a smoother ride and more stable handling, the Q8’s wheelbase is 5.2 inches longer than on the XT6 (117.9 inches vs. 112.7 inches).

Passenger Space

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The Q8 has .4 inches more front legroom, 1.2 inches more front shoulder room, 1.1 inches more rear legroom and 1.1 inches more rear shoulder room than the XT6.

Cargo Capacity

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The Q8 has a much larger cargo volume than the XT6 with its rear seat up (30.5 vs. 12.6 cubic feet).

Towing

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The Q8’s standard towing capacity is much higher than the XT6’s (7700 vs. 1000 pounds).

Servicing Ease

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The engine in the Q8 is mounted longitudinally (North-South), instead of sideways, as in the XT6. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.

Ergonomics

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Unlike the driver-only memory system in the XT6, 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 XT6’s rear power window switches have to be held the entire time to close them fully.

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 XT6 can only close the windows from inside the vehicle, with the ignition on.

A manual rear sunshade is optional in the Q8 and power rear side window sunshades are standard in the Q8 Prestige to help block heat and glare for the rear passengers. The XT6 doesn’t offer a rear or rear side window sunshades.

Recommendations

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/12/11

The Audi Q8 outsold the Cadillac XT6 by almost three to one during the 2019 model year.

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