For enhanced safety, the front and rear seat shoulder belts of the Audi A7 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Cadillac CT6 has only front height-adjustable seat belts.
Both the A7 and CT6 have child safety locks to prevent children from opening the rear doors. The A7 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 A7 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.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the A7. But it costs extra on the CT6.
Both the A7 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, 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 and lane departure warning systems.
The A7’s corrosion warranty is 6 years longer than the CT6’s (12 vs. 6 years).
J.D. Power and Associates’ 2015 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 16th in initial quality. With 7 more problems per 100 vehicles, Cadillac is ranked 21st.
The A7’s 3.0 supercharged V6 produces 61 more horsepower (333 vs. 272) and 30 lbs.-ft. more torque (325 vs. 295) than the CT6’s standard 2.0 turbo 4 cyl. The A7’s 3.0 supercharged V6 produces 40 lbs.-ft. more torque (325 vs. 285) than the CT6’s optional 3.6 DOHC V6.
The A7’s 3.0 turbo V6 diesel produces 133 lbs.-ft. more torque (428 vs. 295) than the CT6’s standard 2.0 turbo 4 cyl. The A7’s 3.0 turbo V6 diesel produces 143 lbs.-ft. more torque (428 vs. 285) than the CT6’s optional 3.6 DOHC V6. The A7’s 3.0 turbo V6 diesel produces 28 lbs.-ft. more torque (428 vs. 400) than the CT6’s optional 3.0 turbo V6.
For better traction, the A7 has larger standard tires than the CT6 (255/40R19 vs. 235/50R18). The A7’s optional tires are larger than the largest tires available on the CT6 (265/35R20 vs. 245/45R19).
The A7’s standard tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the CT6’s standard 50 series tires. The A7’s optional tires have a lower 35 series profile than the CT6’s optional 40 series tires.
For better ride, handling and brake cooling the A7 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the CT6.
For better handling and stability, the track (width between the wheels) on the A7 is 1.4 inches wider in the front and .4 inches wider in the rear than on the CT6.
The A7 is 8.4 inches shorter than the CT6, making the A7 easier to handle, maneuver and park in tight spaces.
The A7 has a much larger trunk than the CT6 (24.5 vs. 15.3 cubic feet).
A low lift-over trunk design makes loading and unloading the A7 easier. The A7’s trunk lift-over height is 27.1 inches, while the CT6’s liftover is 29.1 inches.
The A7’s standard rear seats fold to accommodate long and bulky cargo. The CT6 doesn’t offer folding rear seats.
The A7’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 A7 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.
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The A7 Prestige has standard headlight washers to keep headlight output high. The CT6 doesn’t offer headlight washers.
The CT6 Luxury/Premium/Platinum’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The A7 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.
The Audi A7 won the Check it Out award in Kiplinger’s 2015 car issue.
The A7 was chosen as one of Car and Driver’s “Top Ten” for 3 of the last 4 years. The CT6 has never been a Car and Driver “Top Ten” pick.
The A7 was chosen as one of Automobile Magazine’s “All Stars” for 2 of the last 3 years. The CT6 has never been an “All Star.”
The A7 was selected by Automobile Magazine as their 2012 Car of the Year. The CT6 has never been chosen.