2020 Porsche Panamera vs. 2020 Mercedes AMG C-Class Sedan

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 2020/07/10

Both the Panamera and AMG C-Class Sedan 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 AMG C-Class Sedan’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 Panamera offers available whiplash protection, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the whiplash protection system moves the headrests forward to prevent neck and spine injuries. The AMG C-Class Sedan doesn’t offer a whiplash protection system.

A passive infrared night vision system optional on the Panamera helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard and even aims one of the vehicle’s headlights in the direction of the person or object. The AMG C-Class Sedan doesn’t offer a night vision system.

Both the Panamera and the AMG C-Class Sedan have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver 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, lane departure warning systems, blind spot warning systems and around view monitors.

Warranty

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The Panamera’s corrosion warranty is 7 years longer than the AMG C-Class Sedan’s (12 vs. 5 years).

Reliability

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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 Mercedes vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 26 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Porsche fourth in reliability. Mercedes is ranked 21st.

Engine

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The Panamera has more powerful engines than the AMG C-Class Sedan:

Horsepower

Torque

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.

AMG C 43 Sedan 3.0 turbo V6

385 HP

384 lbs.-ft.

AMG C 63 Sedan 4.0 turbo V8

469 HP

479 lbs.-ft.

AMG C 63 S Sedan 4.0 turbo V8

503 HP

516 lbs.-ft.

As tested in Motor Trend the Panamera 4S is faster than the AMG C 63 S Sedan:

Panamera

AMG C-Class

Zero to 30 MPH

1.3 sec

1.8 sec

Zero to 60 MPH

3.8 sec

4 sec

Fuel Economy and Range

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On the EPA test cycle the Panamera E-Hybrid running on electricity gets better fuel mileage than the AMG C-Class Sedan:

MPGe

Panamera E-Hybrid

AWD

2.9 turbo V6 Hybrid

48 city/54 hwy

4.0 turbo V8 Hybrid

46 city/51 hwy

MPG

AMG C-Class Sedan

RWD

63 4.0 turbo V8

18 city/27 hwy

63 S 4.0 turbo V8

18 city/27 hwy

AWD

43 3.0 turbo V6

19 city/27 hwy

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

An engine control system that can shut down some of the engine’s cylinders helps improve the Panamera Turbo/GTS’ fuel efficiency. The AMG C-Class Sedan doesn’t offer a system that can shut down part of the engine.

Regenerative brakes improve the Panamera’s fuel efficiency by converting inertia back into energy instead of wasting it. The AMG C-Class Sedan doesn’t offer a regenerative braking system.

The Panamera E Hybrid’s standard fuel tank has 3.7 gallons more fuel capacity than the AMG C-Class Sedan (21.1 vs. 17.4 gallons), for longer range between fill-ups. The Panamera’s standard fuel tank has 6.3 gallons more fuel capacity than the AMG C-Class Sedan (23.7 vs. 17.4 gallons).

Brakes and Stopping

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For better stopping power the Panamera’s brake rotors are larger than those on the AMG C-Class Sedan:

Panamera 4S

Panamera E-Hybrid/GTS

Panamera Turbo

Panamera opt.

AMG C 43

AMG C 63 S

Front Rotors

14.2 inches

15.4 inches

16.1 inches

16.5 inches

14.2 inches

15.8 inches

Rear Rotors

13 inches

14.4 inches

15 inches

16.1 inches

12.6 inches

14.2 inches

The Panamera stops shorter than the AMG C-Class Sedan:

Panamera

AMG C-Class

70 to 0 MPH

153 feet

160 feet

Car and Driver

Tires and Wheels

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For better traction, the Panamera has larger standard tires than the AMG C-Class Sedan (F:265/45R19 & R:295/40R19 vs. F:225/45R18 & R:245/40R18). The Panamera’s optional tires are larger than the largest tires available on the AMG C-Class Sedan (F:275/40R20 & R:315/35R20 vs. F:245/40R18 & R:265/40R18).

The Panamera’s optional 315/30R21 rear tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the AMG C-Class Sedan’s optional 35 series tires.

For better ride, handling and brake cooling the Panamera has standard 19-inch wheels. Smaller 18-inch wheels are standard on the AMG C 63 Sedan. The Panamera’s optional 21-inch wheels are larger than the 19-inch wheels optional on the AMG C-Class Sedan.

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 AMG C-Class Sedan 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. Mercedes doesn’t offer an active suspension on the AMG C-Class Sedan.

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

For a smoother ride and more stable handling, the Panamera’s wheelbase is 4.3 inches longer than on the AMG C-Class Sedan (116.1 inches vs. 111.8 inches). The Panamera Executive’s wheelbase is 10.2 inches longer than on the AMG C-Class Sedan (122 inches vs. 111.8 inches).

For better handling and stability, the average track (width between the wheels) on the Panamera is 2.3 inches wider in the front and 3.7 inches wider in the rear than the average track on the AMG C-Class Sedan.

The Panamera’s front to rear weight distribution is more even (51.2% to 48.8%) than the AMG C-Class Sedan’s (56.3% to 43.7%). This gives the Panamera more stable handling and braking.

The Panamera Turbo handles at 1.00 G’s, while the AMG C 43 Sedan pulls only .93 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Panamera’s turning circle is tighter than the AMG C-Class Sedan’s:

Panamera

AMG C-Class Sedan

SWB 4dr Hatchback

37.4 feet

38.7 feet

LWB 4dr Hatchback

38.7 feet

n/a

AWDSWB 4dr Hatchback

37.4 feet

38.7 feet

AWD LWB 4dr Hatchback

38.7 feet

n/a

Chassis

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The front grille of the Panamera uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The AMG C-Class Sedan doesn’t offer active grille shutters.

The Panamera offers available computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The AMG C-Class Sedan doesn’t offer active noise cancellation.

As tested by Car and Driver, the interior of the Panamera Turbo is quieter than the AMG C 63 S Sedan:

Panamera

AMG C-Class Sedan

At idle

44 dB

52 dB

Full-Throttle

75 dB

79 dB

70 MPH Cruising

64 dB

68 dB

Passenger Space

© 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 2020/07/10

Because it has more passenger and cargo room, the EPA rates the Panamera 4dr Hatchback a Large car, while the AMG C-Class Sedan is rated a Compact.

The Panamera has 18 cubic feet more passenger volume than the AMG C-Class Sedan (108 vs. 90).

For enhanced passenger comfort on long trips the Panamera’s available rear seats recline. The AMG C-Class Sedan’s rear seats don’t recline.

Cargo Capacity

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The Panamera has a much larger trunk with its rear seat up than the AMG C Sedan (17.6 vs. 12.6 cubic feet).

The Panamera Sport Turismo has a much larger trunk with its rear seat up than the AMG C-Class Sedan (18.3 vs. 12.6 cubic feet).

Pressing a switch automatically lowers the Panamera’s rear seats, to make changing between passengers and cargo easier. The AMG C-Class Sedan doesn’t offer automatic folding seats.

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Porsche service is better than Mercedes. J.D. Power ranks Porsche first in service department satisfaction. With a 23% lower rating, Mercedes is ranked fifth.

Ergonomics

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The Panamera’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The AMG C-Class Sedan does not have an oil pressure gauge.

To improve rear visibility by keeping the rear window clear, the Panamera offers an optional rear wiper. The AMG C-Class Sedan 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 AMG C-Class Sedan doesn’t offer headlight washers.

A power rear sunshade is optional in the Panamera (except Sport Turismo) and power rear side window sunshades are optional in the Panamera to help block heat and glare for the rear passengers. The AMG C-Class Sedan doesn’t offer rear side window sunshades.

Both the Panamera and the AMG C-Class Sedan have standard heated front seats. The Panamera also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the AMG C-Class Sedan.

Optional air conditioned front and rear seats keep the Panamera’s passengers comfortable and take the sting out of hot leather in summer. The AMG C-Class Sedan doesn’t offer air-conditioned seats in the rear.

On extremely cold winter days, the Panamera’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The AMG C-Class Sedan doesn’t offer a heated steering wheel.

The Panamera offers optional massaging front and rear seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the AMG C-Class Sedan.

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 AMG C-Class Sedan doesn’t offer a house-current electrical outlet.

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