2020 Porsche Panamera vs. 2020 Cadillac CT6

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 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 2020/01/25

Both the Panamera and CT6 have child safety locks to prevent children from opening the rear doors. The Panamera offers optional 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.

Both the Panamera 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, 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.

Warranty

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

Reliability

© 1999 - 2020 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 2020/01/25

J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Cadillac vehicles. J.D. Power ranks Porsche 15th in initial quality. With 4 more problems per 100 vehicles, Cadillac is ranked 17th.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Cadillac vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 58 more problems per 100 vehicles, Cadillac is ranked 23rd.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks Porsche fourth in reliability. Cadillac is ranked 30th.

Engine

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The Panamera has more powerful engines than the CT6:

Horsepower

Torque

Panamera 3.0 turbo V6

330 HP

330 lbs.-ft.

Panamera 4S 2.9 turbo V6

440 HP

405 lbs.-ft.

Panamera GTS 4.0 turbo V8

453 HP

457 lbs.-ft.

Panamera 4 E-Hybrid 2.9 turbo V6

457 HP

516 lbs.-ft.

Panamera Turbo 4.0 turbo V8

550 HP

567 lbs.-ft.

Panamera Turbo S E-Hybrid 4.0 turbo V8

677 HP

626 lbs.-ft.

CT6 3.6 DOHC V6

335 HP

285 lbs.-ft.

CT6 Platinum 4.2 turbo V8

500 HP

574 lbs.-ft.

Fuel Economy and Range

© 1999 - 2020 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 2020/01/25

On the EPA test cycle the Panamera E-Hybrid running on electricity gets better fuel mileage than the CT6:

MPGe

Panamera E-Hybrid

AWD

2.9 turbo V6 Hybrid

48 city/54 hwy

4.0 turbo V8 Hybrid

46 city/51 hwy

MPG

CT6

AWD

3.6 DOHC V6

18 city/27 hwy

4.2 turbo V8

14 city/25 hwy

On the EPA test cycle the Panamera running its gasoline engine gets better fuel mileage than the CT6:

MPG

Panamera

RWD

3.0 turbo V6

19 city/27 hwy

AWD

3.0 turbo V6

19 city/26 hwy

2.9 turbo V6 Hybrid

21 city/24 hwy

2.9 turbo V6

18 city/26 hwy

GTS 4.0 turbo V8

16 city/23 hwy

Turbo 4.0 turbo V8

18 city/25 hwy

4.0 turbo V8 Hybrid

19 city/22 hwy

CT6

AWD

3.6 DOHC V6

18 city/27 hwy

4.2 turbo V8

14 city/25 hwy

The Panamera 4 E-Hybrid can drive on battery power alone for up to 14 miles. The CT6 must run its internal combustion engine to move.

Regenerative brakes improve the Panamera’s fuel efficiency by converting inertia back into energy instead of wasting it (mild regeneration on non-hybrids). The CT6 doesn’t offer a regenerative braking system.

The Panamera E Hybrid’s standard fuel tank has 1.9 gallons more fuel capacity than the CT6 (21.1 vs. 19.2 gallons), for longer range between fill-ups. The Panamera’s standard fuel tank has 4.5 gallons more fuel capacity than the CT6 (23.7 vs. 19.2 gallons).

Transmission

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The Panamera 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.

Brakes and Stopping

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

Panamera

Panamera 4S

Panamera E-Hybrid/GTS

Panamera Turbo

Panamera opt.

CT6 AWD

CT6 Platinum

Front Rotors

13.8 inches

14.2 inches

15.4 inches

16.1 inches

16.5 inches

13.6 inches

14.6 inches

Rear Rotors

13 inches

13 inches

14.4 inches

15 inches

16.1 inches

12.4 inches

13.3 inches

The Panamera offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The CT6 doesn’t offer ceramic brake rotors.

Tires and Wheels

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For better traction, the Panamera has larger standard tires than the CT6 (F:265/45R19 & R:295/40R19 vs. 245/45R19). The Panamera’s optional tires are larger than the largest tires available on the CT6 (F:275/40R20 & R:315/35R20 vs. 245/45R19).

The Panamera’s standard 295/40R19 rear 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 45 series tires. The Panamera’s optional 275/35R21 front and 315/30R21 rear tires have a lower 35 series front and 30 series rear profile than the CT6 Premium Luxury/Platinum’s 40 series tires.

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

Suspension and Handling

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The Panamera offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The CT6 doesn’t offer an active sway bar system.

The Panamera offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Cadillac doesn’t offer an active suspension on the CT6.

The Panamera has a standard automatic load leveling suspension to keep ride height level with a heavy load or when towing. The CT6 doesn’t offer a load leveling suspension.

For better handling and stability, the average track (width between the wheels) on the Panamera is 2.1 inches wider in the front and .8 inches wider in the rear than the track on the CT6.

For better maneuverability, the Panamera w/Rear Axle Steering’s turning circle is 2.6 feet tighter than the CT6’s (37.4 feet vs. 40 feet).

Chassis

© 1999 - 2020 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 2020/01/25

The Panamera is 7 inches shorter than the CT6, making the Panamera easier to handle, maneuver and park in tight spaces. The Panamera Executive is 1.1 inches shorter than the CT6.

Cargo Capacity

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The Panamera has a much larger trunk with its rear seat up than the CT6 (17.6 vs. 15.8 cubic feet).

The Panamera Sport Turismo has a much larger trunk with its rear seat up than the CT6 (18.3 vs. 15.8 cubic feet).

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

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Porsche service is better than Cadillac. J.D. Power ranks Porsche first in service department satisfaction. With a 13% lower rating, Cadillac is ranked third.

Ergonomics

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To improve rear visibility by keeping the rear window clear, the Panamera offers an optional rear wiper. The CT6 doesn’t offer a rear wiper.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Panamera offers available 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 Panamera’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.

The Panamera Sport Turismo offers an optional 115-volt a/c outlet in the cargo area, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The CT6 doesn’t offer a house-current electrical outlet.

Model Availability

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The Porsche Panamera comes in four door hatchback and station wagon bodystyles; the Cadillac CT6 isn’t available as a station wagon.

The Panamera is available in both rear-wheel drive and all-wheel drive configurations. The CT6 doesn’t offer a two-wheel drive configuration.

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