2020 Mercedes AMG SLC vs. 2020 Porsche 718 Boxster

Detailed Review, Specifications & Comparison

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Safety

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The AMG SLC’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 718 Boxster doesn’t offer pre-crash pretensioners.

The AMG SLC has standard NECK-PRO Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the NECK-PRO Head Restraints system moves the headrests forward to prevent neck and spine injuries. The 718 Boxster doesn’t offer a whiplash protection system.

The AMG SLC’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The 718 Boxster doesn’t offer a lane departure warning system.

The AMG SLC’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The 718 Boxster doesn’t offer a driver alert monitor.

Both the AMG SLC and the 718 Boxster have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available rear parking sensors.

Warranty

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There are over 2 times as many Mercedes dealers as there are Porsche dealers, which makes it much easier should you ever need service under the AMG SLC’s warranty.

Reliability

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J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Porsche vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 2 more problems per 100 vehicles, Porsche is ranked 15th.

Engine

© 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 2020/02/28

The AMG SLC’s 3.0 turbo V6 produces 85 more horsepower (385 vs. 300) and 104 lbs.-ft. more torque (384 vs. 280) than the 718 Boxster’s standard 2.0 turbo 4-cylinder. The AMG SLC’s 3.0 turbo V6 produces 35 more horsepower (385 vs. 350) and 75 lbs.-ft. more torque (384 vs. 309) than the 718 Boxster S’ standard 2.5 turbo 4-cylinder. The AMG SLC’s 3.0 turbo V6 produces 20 more horsepower (385 vs. 365) and 75 lbs.-ft. more torque (384 vs. 309) than the 718 Boxster GTS’ standard 2.5 turbo 4-cylinder. The AMG SLC’s 3.0 turbo V6 produces 75 lbs.-ft. more torque (384 vs. 309) than the 718 Spyder’s standard 4.0 GT3 6-cylinder.

Fuel Economy and Range

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The AMG SLC has 1.7 gallons more fuel capacity than the 718 Boxster’s standard fuel tank (15.9 vs. 14.2 gallons), for longer range between fill-ups.

Transmission

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A nine-speed automatic is standard on the Mercedes AMG SLC, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the 718 Boxster.

Brakes and Stopping

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For better stopping power the AMG SLC’s standard brake rotors are larger than those on the 718 Boxster:

AMG SLC

718 Boxster

Front Rotors

14.2 inches

13 inches

Rear Rotors

13 inches

11.8 inches

Tires and Wheels

© 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 2020/02/28

The AMG SLC’s 235/40R18 front and 255/35R18 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the 718 Boxster’s standard 45 series tires.

The AMG SLC has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the 718 Boxster, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling

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For better handling and stability, the track (width between the wheels) on the AMG SLC is 1.1 inches wider in the front and 1.3 inches wider in the rear than the average track on the 718 Boxster.

For better maneuverability, the AMG SLC 43’s turning circle is .7 feet tighter than the 718 Spyder’s (36.8 feet vs. 37.5 feet).

Chassis

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The AMG SLC is 9.3 inches shorter than the 718 Boxster, making the AMG SLC easier to handle, maneuver and park in tight spaces.

The AMG SLC’s standard power retractable hardtop allows a seamless transition from an open car, to a completely sealed coupe. The 718 Boxster doesn’t offer a retractable hardtop.

Cargo Capacity

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With its convertible body style, valet key and remote trunk release lockout, the AMG SLC offers cargo security. The 718 Boxster’s non-lockable remote release defeats cargo security.

Ergonomics

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Unlike the driver-only memory system optional at extra cost in the 718 Boxster, the AMG SLC has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The AMG SLC’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the 718 Boxster.

If the windows are left open on the AMG SLC the driver can close them all at the outside door handle or from a distance using the remote (remote must be aimed at door sensor). On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the 718 Boxster can only operate the windows from inside the vehicle, with the ignition on.

The AMG SLC’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 718 Boxster’s standard manually variable intermittent wipers have to be constantly adjusted.

The AMG SLC’s sun-visors swivel front-to-side to block glare from the side windows. The 718 Boxster’s visors are fixed into the windshield header.

The AMG SLC has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning costs extra on the 718 Boxster.

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