2020 Audi A6 vs. 2020 Cadillac CT6

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 2019/12/05

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 and force limiters to limit the pressure the belts will exert on the passengers. The Cadillac CT6 doesn’t offer pretensioners for the rear seat belts.

Both the A6 and CT6 have child safety locks to prevent children from opening the rear doors. The A6 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 CT6’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 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 CT6 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.

Both the A6 and the CT6 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, all-wheel drive, 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 and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard front crash prevention system, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the A6 its highest rating: “Top Pick Plus” for 2019, a rating granted to only 55 vehicles tested by the IIHS. The CT6 has not been tested, yet.

Warranty

© 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 2019/12/05

The A6’s corrosion warranty is 6 years longer than the CT6’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 2019/12/05

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 A6 55 TFSI’s standard 3.0 turbo V6 hybrid produces 84 lbs.-ft. more torque (369 vs. 285) than the CT6’s standard 3.6 DOHC V6.

Fuel Economy and Range

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On the EPA test cycle the A6 55 TFSI gets better fuel mileage than the CT6 (22 city/29 hwy vs. 18 city/27 hwy).

On the EPA test cycle the A6 45 TFSI Auto gets better fuel mileage than the CT6 V6 (24 city/32 hwy vs. 18 city/27 hwy).

Regenerative brakes improve the A6’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT6 doesn’t offer a regenerative braking system.

Transmission

© 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 2019/12/05

The A6 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 CT6 doesn’t offer an SMG or a conventional manual transmission.

Tires and Wheels

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For better traction, the A6’s optional tires are larger than the largest tires available on the CT6 (255/40R20 vs. 245/45R19).

The A6 Prestige’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the CT6 Premium Luxury/Platinum’s 40 series tires.

For better ride, handling and brake cooling the A6 Prestige offers optional 21-inch wheels. The CT6’s largest wheels are only 20-inches.

Suspension and Handling

© 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 2019/12/05

For better maneuverability, the A6’s turning circle is 3.6 feet tighter than the CT6’s (36.4 feet vs. 40 feet).

Chassis

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The A6 is 11.4 inches shorter than the CT6, making the A6 easier to handle, maneuver and park in tight spaces.

Passenger Space

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The A6 has .1 inches more rear headroom and .3 inches more rear shoulder room than the CT6.

Cargo Capacity

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A low lift-over trunk design makes loading and unloading the A6 easier. The A6’s trunk lift-over height is 27 inches, while the CT6’s liftover is 29.1 inches.

The A6’s standard rear seats fold to accommodate long and bulky cargo. The CT6 doesn’t offer folding rear seats, only a ski pass-through.

Towing

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The A6’s standard towing capacity is much higher than the CT6’s (3500 vs. 1000 pounds).

While the CT6 V8 can only tow 900, any A6 can tow a minimum of 3500 pounds.

Ergonomics

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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 Premium Plus/Prestige has standard headlight washers to keep headlight output high. The CT6 doesn’t offer headlight washers.

The CT6 Premium Luxury/Platinum’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The A6’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Economic Advantages

© 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 2019/12/05

According to The Car Book by Jack Gillis, the A6 is less expensive to operate than the CT6 because it costs $209 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the A6 than the CT6, including $116 less for a muffler, $61 less for front brake pads, $9 less for a timing belt/chain and $434 less for a power steering pump.

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 2019/12/05

J.D. Power and Associates rated the A6 third among midsize premium cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The CT6 isn’t in the top three.

The Audi A6/S6 outsold the Cadillac CT6 by over two to one during the 2019 model year.

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