Certified Benz & Beemer Compares 2017 Audi A6 VS 2017 Cadillac CT6 Near Scottsdale, AZ

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2017 Audi A6

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VS

2017 Cadillac CT6

Safety Comparison

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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, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, night vision systems, lane departure warning systems, blind spot warning systems and around view monitors.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the A6 the rating of “Top Pick” for 2017, a rating granted to only 103 vehicles tested by the IIHS. The CT6 has not been tested, yet.

Warranty Comparison

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The A6’s corrosion warranty is 6 years longer than the CT6’s (12 vs. 6 years).

Reliability Comparison

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J.D. Power and Associates’ 2016 Initial Quality Study of new car owners surveyed provide the statistics that show that Audi vehicles are better in initial quality than Cadillac vehicles. J.D. Power ranks Audi 14th in initial quality. With 2 more problems per 100 vehicles, Cadillac is ranked 16th.

J.D. Power and Associates’ 2016 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 11th in reliability, above the industry average. With 11 more problems per 100 vehicles, Cadillac is ranked 15th.

Engine Comparison

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As tested in Motor Trend the A6 2.0T 2.0 turbo 4 cyl. is faster than the Cadillac CT6 turbo 4 cyl.:

 

A6

CT6

Zero to 60 MPH

6 sec

6.4 sec

Quarter Mile

14.6 sec

14.7 sec

Speed in 1/4 Mile

93.2 MPH

92.8 MPH

As tested in Motor Trend the A6 3.0T 3.0 supercharged V6 is faster than the Cadillac CT6 3.0:

 

A6

CT6

Zero to 60 MPH

4.4 sec

5.1 sec

Quarter Mile

13 sec

13.6 sec

Speed in 1/4 Mile

107 MPH

102.3 MPH

Fuel Economy and Range Comparison

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On the EPA test cycle the A6 3.0T Quattro 3.0 S.C. V6 (333 HP) gets better fuel mileage than the CT6 AWD turbo V6 (21 city/29 hwy vs. 18 city/26 hwy).

Brakes and Stopping Comparison

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For better stopping power the A6’s brake rotors are larger than those on the CT6:

 

A6 2.0T

A6 3.0T

CT6 2.0

CT6 AWD V6

Front Rotors

13.6 inches

14 inches

12.6 inches

13.6 inches

Rear Rotors

13 inches

13 inches

12.4 inches

12.4 inches

The A6 stops much shorter than the CT6:

 

A6

CT6

 

70 to 0 MPH

156 feet

164 feet

Car and Driver

60 to 0 MPH

106 feet

117 feet

Motor Trend

Tires and Wheels Comparison

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For better traction, the A6 has larger standard tires than the CT6 (245/45R18 vs. 235/50R18). The A6’s optional tires are larger than the largest tires available on the CT6 (255/40R19 vs. 245/45R19).

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 CT6’s standard 50 series tires. The A6’s optional tires have a lower 35 series profile than the CT6’s optional 40 series tires.

Suspension and Handling Comparison

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The A6 3.0T Quattro handles at .95 G’s, while the CT6 pulls only .82 G’s of cornering force in a Motor Trend skidpad test.

The A6 3.0T Quattro executes Motor Trend’s “Figure Eight” maneuver 1.6 seconds quicker than the CT6 (25.1 seconds @ .74 average G’s vs. 26.7 seconds @ .66 average G’s).

For better maneuverability, the A6’s turning circle is 1 foot tighter than the CT6’s (39 feet vs. 40 feet).

Chassis Comparison

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The A6 is 9.8 inches shorter than the CT6, making the A6 easier to handle, maneuver and park in tight spaces.

As tested by Car and Driver, the interior of the A6 3.0T Quattro is quieter than the CT6 AWD:

 

A6

CT6

At idle

41 dB

49 dB

Full-Throttle

72 dB

73 dB

70 MPH Cruising

64 dB

64 dB

Cargo Capacity Comparison

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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.

A standard locking glovebox keeps your small valuables safer in the A6. The CT6 doesn’t offer locking storage for small valuables.

Ergonomics Comparison

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If the windows are left down on the A6 the driver can raise them all using the key in the outside lock cylinder; on a hot day the driver can lower the windows. The driver of the CT6 can only raise the windows from inside the vehicle, with the ignition on.

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 CT6’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

Heated windshield washer nozzles are standard on the A6 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The CT6 doesn’t offer heated windshield washer nozzles.

The CT6 Luxury/Premium/Platinum’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The A6 Prestige’s standard 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.

Recommendations Comparison

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The Audi A6 has won recognition from these important consumer publications:

 

A6

CT6

Consumer Reports® Recommends

TRUE

n/a

Car Book “Best Bet”

TRUE

n/a

J.D. Power and Associates rated the A6 first 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 A6 was chosen as one of Car and Driver’s “Top Ten” for 5 of the last 17 years. The CT6 has never been a Car and Driver “Top Ten” pick.

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