2020 Porsche Panamera vs. 2020 Mercedes E-Class Sedan

Detailed Review, Specifications & Comparison

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Safety

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Both the Panamera and E-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 E-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.

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 E-Class Sedan doesn’t offer a night vision system.

Both the Panamera and the E-Class Sedan have standard driver and passenger frontal airbags, front 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 E-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 E-Class Sedan:

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.

E 350 Sedan 2.0 turbo 4-cylinder

255 HP

273 lbs.-ft.

E 450 4MATIC Sedan 3.0 turbo V6

362 HP

369 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 2020/07/11

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

E-Class Sedan

RWD

2.0 turbo 4-cyl.

23 city/32 hwy

AWD

2.0 turbo 4-cyl.

22 city/30 hwy

3.0 turbo V6

20 city/28 hwy

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

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

Regardless of its engine, Regenerative brakes improve the Panamera’s fuel efficiency by converting inertia back into energy instead of wasting it (mild regeneration on non-hybrids). Mercedes only offers a regenerative brake system on the E-Class Sedan 53 AMG.

The Panamera E Hybrid’s standard fuel tank has 3.7 gallons more fuel capacity than the E-Class Sedan 300’s standard fuel tank (21.1 vs. 17.4 gallons), for longer range between fill-ups. The Panamera’s standard fuel tank has 2.6 gallons more fuel capacity than the E-Class Sedan 450/AMG 53’s standard fuel tank (23.7 vs. 21.1 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 E-Class Sedan doesn’t offer an SMG or a conventional manual transmission.

The Panamera’s optional launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The E-Class Sedan doesn’t offer launch control.

Brakes and Stopping

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

Panamera

Panamera 4S

Panamera E-Hybrid/GTS

Panamera Turbo

Panamera opt.

E 350

E 450

Front Rotors

13.8 inches

14.2 inches

15.4 inches

16.1 inches

16.5 inches

13.5 inches

14.2 inches

Rear Rotors

13 inches

13 inches

14.4 inches

15 inches

16.1 inches

11.8 inches

14.2 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 E-Class Sedan doesn’t offer ceramic brake rotors.

The Panamera stops shorter than the E-Class Sedan:

Panamera

E-Class

70 to 0 MPH

153 feet

161 feet

Car and Driver

60 to 0 MPH

101 feet

110 feet

Motor Trend

Tires and Wheels

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

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 E-Class Sedan’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 E-Class Sedan’s optional 40 series front and 35 series rear tires.

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

For a smoother ride and more stable handling, the Panamera’s wheelbase is .4 inches longer than on the E-Class Sedan (116.1 inches vs. 115.7 inches). The Panamera Executive’s wheelbase is 6.3 inches longer than on the E-Class Sedan (122 inches vs. 115.7 inches).

For better handling and stability, the average track (width between the wheels) on the Panamera is 2.2 inches wider in the front and 1.8 inches wider in the rear than the average track on the E-Class Sedan.

The Panamera’s front to rear weight distribution is more even (51.2% to 48.8%) than the E-Class Sedan’s (54.2% to 45.8%). This gives the Panamera more stable handling and braking.

The Panamera 4S handles at 1.01 G’s, while the E 350 Sedan pulls only .90 G’s of cornering force in a Motor Trend skidpad test.

The Panamera Turbo executes Motor Trend’s “Figure Eight” maneuver 1.9 seconds quicker than the E 350 Sedan (23.9 seconds @ .86 average G’s vs. 25.8 seconds @ .7 average G’s).

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

Panamera

E-Class Sedan

SWB 4dr Hatchback

37.4 feet

39 feet

LWB 4dr Hatchback

38.7 feet

n/a

AWDSWB 4dr Hatchback

37.4 feet

39 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 E-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 E-Class Sedan doesn’t offer active noise cancellation.

Passenger Space

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

The Panamera has 10 cubic feet more passenger volume than the E-Class Sedan (108 vs. 98).

For enhanced passenger comfort on long trips the Panamera’s available rear seats recline. The E-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 E-Class Sedan (17.6 vs. 13.1 cubic feet).

The Panamera Sport Turismo has a much larger trunk with its rear seat up than the E-Class Sedan (18.3 vs. 13.1 cubic feet).

Pressing a switch automatically lowers the Panamera’s rear seats, to make changing between passengers and cargo easier. The E-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 E-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 E-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 E-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 E-Class Sedan doesn’t offer rear side window sunshades.

The Panamera has standard heated front seats. Heated front seats cost extra on the E-Class Sedan. 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 E-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 E-Class Sedan doesn’t offer air-conditioned seats in the rear.

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

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