Porsche 718 Cayman vs. Mercedes-Benz SLC
iSeeCars' unbiased and data-driven comparison of the Porsche 718 Cayman and Mercedes-Benz SLC contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the Porsche 718 Cayman and the Mercedes-Benz SLC.
When comparing the Porsche 718 Cayman's and the Mercedes-Benz SLC's specifications and ratings, the Porsche 718 Cayman has the advantage in the areas of resale value and base engine power. The Mercedes-Benz SLC has the advantage in the areas of typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency. Based on this comparison of the Porsche 718 Cayman's and the Mercedes-Benz SLC's specifications and ratings, the two cars are fairly comparable.
Pricing: A used 2020 Porsche 718 Cayman ranges from $118,365 to $141,246 while a used 2020 Mercedes-Benz SLC is priced between $33,950 to $49,942.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the Porsche 718 Cayman loses 19.5 percent of its value and the Mercedes-Benz SLC loses 44.3 percent of its value. This means the Porsche 718 Cayman retains 24.8 percentage points more of its value and has the advantage of higher resale value versus the Mercedes-Benz SLC.
Engine Power and Fuel Efficiency Comparison: For engine performance, the Porsche 718 Cayman’s base engine makes 300 horsepower, and the Mercedes-Benz SLC base engine makes 241 horsepower. The 718 Cayman is rated to deliver an average of 22 miles per gallon, with a highway range of 369 miles. The SLC is rated to deliver an average of 27 miles per gallon, with a highway range of 509 miles. This gives the Mercedes-Benz SLC the fuel efficiency and maximum range advantage over the Porsche 718 Cayman. Both models use premium unleaded.
New Car Pricing
Asking Price:
-
Starting MSRP:
$57,500
Category Avg Starting MSRP:
(Luxury Sports Cars)
$94,049
Category Starting MSRP Range:
(Luxury Sports Cars)
$41,350 - $500,000
New Car Pricing
Asking Price:
-
Starting MSRP:
$49,950
Category Avg Starting MSRP:
(Luxury Sports Cars)
$94,049
Category Starting MSRP Range:
(Luxury Sports Cars)
$41,350 - $500,000
Used Car Pricing
Avg Used Car Price:
$129,702
Price Range:
$118,365 - $141,246
Category Avg Price:
(Luxury Sports Cars)
$80,113
Category Avg Price Range:
(Luxury Sports Cars)
$32,174 - $182,277
# Used Cars for Sale Nationally:
17
Avg Mileage of Used Cars for Sale:
13,043
# Good or Great Deals:
1
Used Car Pricing
Avg Used Car Price:
$40,747
Price Range:
$33,950 - $49,942
Category Avg Price:
(Luxury Sports Cars)
$80,113
Category Avg Price Range:
(Luxury Sports Cars)
$32,174 - $182,277
# Used Cars for Sale Nationally:
12
Avg Mileage of Used Cars for Sale:
21,366
# Good or Great Deals:
5
Porsche 718 Cayman Scores & Rankings
Overall Score:
7.9 / 10
Reliability:
6.4 / 10
Retained Value:
9.3 / 10
Safety:
Not available
Mercedes-Benz SLC Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
7.7 / 10
Safety:
Not available
iSeeCars Reliability Insights for Porsche 718 Cayman
Remaining Life Expectancy (years):
Typical Category Remaining Life Expectancy:
(Luxury Sports Cars)
8.9
Category Remaining Life Expectancy Range:
(Luxury Sports Cars)
4.7 - 13.2
Chance of Reaching 200k Miles for a New Car:
iSeeCars Reliability Insights for Mercedes-Benz SLC
Remaining Life Expectancy (years):
9.6
Typical Category Remaining Life Expectancy:
(Luxury Sports Cars)
8.9
Category Remaining Life Expectancy Range:
(Luxury Sports Cars)
4.7 - 13.2
Chance of Reaching 200k Miles for a New Car:
0%
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
2.6
Typical Category Recalls:
(Luxury Sports Cars)
1.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 22.8
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
1.8
Typical Category Recalls:
(Luxury Sports Cars)
1.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 22.8
Porsche 718 Cayman Rankings
Ranking
2 out of / 41Ranking
2 out of / 7Ranking
3 out of / 7Ranking
11 out of / 32Ranking
13 out of / 41Ranking
21 out of / 41Ranking
27 out of / 41Mercedes-Benz SLC Rankings
Ranking
8 out of / 27Ranking
10 out of / 27Ranking
12 out of / 27Ranking
14 out of / 41Ranking
15 out of / 41Ranking
19 out of / 27Ranking
24 out of / 41Ranking
33 out of / 41Available Body Styles
Coupe
Available Body Styles
Convertible
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Porsche 718 Cayman Trim Levels
Base, GT4, S, T
Mercedes-Benz SLC Trim Levels
AMG SLC 43, AMG SLC 43 Final Edition, SLC 300, SLC 300 Final Edition
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
300 hp @ 6500 rpm
Torque:
280 foot-lbs @ 1950 rpm
Power-to-Weight Ratio (higher is better):
0.099 hp per pound
Base Drivetrain Specs
Horsepower:
241 hp @ 5550 rpm
Torque:
273 foot-lbs @ 1300 rpm
Power-to-Weight Ratio (higher is better):
0.071 hp per pound
Engine Specifications
Engine Size:
2 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
4
Transmission:
Manual
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
20 / 26 / 22
Range (city/hwy):
284 / 369 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
2 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
23 / 32 / 27
Range (city/hwy):
366 / 509 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Alloy wheels:
Standard
Bluetooth:
Standard
Keyless Entry:
Standard
Leather Upholstery:
Standard
Parking Sensors:
Standard
Power outlet:
Standard
Satellite radio:
Standard
Adaptive Cruise Control:
Available
Apple CarPlay:
Available
Cooled/Ventilated Seats:
Available
Heated Seats
Available
Heated Steering Wheel:
Available
Keyless Ignition:
Available
Navigation System:
Available
Voice Recognition:
Available
Wireless Smartphone Charging:
Available
Air Suspension:
N/A
Android Auto:
N/A
Automatic Parking:
N/A
Bench Seats:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Internet Radio:
N/A
Massage Seats:
N/A
Paddle Shifters:
N/A
Panoramic Sunroof/Moonroof
N/A
Power Lift Gate:
N/A
Quad Seats:
N/A
Roadside assistance:
N/A
Roof Rack:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Wifi:
N/A
Standard/Optional Features
Alloy wheels:
Standard
Bluetooth:
Standard
Keyless Entry:
Standard
Leather Upholstery:
Standard
Parking Sensors:
Available
Power outlet:
Standard
Satellite radio:
Available
Adaptive Cruise Control:
Available
Apple CarPlay:
Available
Cooled/Ventilated Seats:
N/A
Heated Seats
Available
Heated Steering Wheel:
N/A
Keyless Ignition:
Standard
Navigation System:
Available
Voice Recognition:
Standard
Wireless Smartphone Charging:
N/A
Air Suspension:
N/A
Android Auto:
Available
Automatic Parking:
Available
Bench Seats:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Internet Radio:
N/A
Massage Seats:
N/A
Paddle Shifters:
Standard
Panoramic Sunroof/Moonroof
Standard
Power Lift Gate:
N/A
Quad Seats:
N/A
Roadside assistance:
Standard
Roof Rack:
N/A
Sunroof/Moonroof:
Standard
Trailer Hitch:
N/A
Wifi:
Standard
Safety Features
Backup camera:
Standard
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
N/A
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Safety Features
Backup camera:
Standard
360-Degree Camera:
N/A
Blind Spot Monitoring:
Available
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Available
Lane Keeping Assist:
Available
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
Not yet available
Front Leg Room:
Not yet available
Front Shoulder Room:
Not yet available
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
14.9 cubic feet
Overall Interior Volume:
Not yet available
Interior Dimensions
Front Head Room:
38 inches
Front Leg Room:
42.5 inches
Front Shoulder Room:
52.2 inches
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
6.5 cubic feet
Overall Interior Volume:
48.8 cubic feet
Exterior Dimensions
Curb Weight:
3034 lbs
Width:
78.5 inches
Height:
51 inches
Length:
172.4 inches
Wheelbase:
97.4 inches
Ground Clearance:
4.3 inches
Exterior Dimensions
Curb Weight:
3384 lbs
Width:
79 inches
Height:
51.3 inches
Length:
162.8 inches
Wheelbase:
95.7 inches
Ground Clearance:
4.4 inches
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.0 inches
Wheel Type:
aluminum alloy
Tire Size:
235/45ZR18
Standard Wheel/Tire Information
Wheel Size:
17.0 x 7.5 inches
Wheel Type:
aluminum alloy
Tire Size:
225/45R17
Exterior Colors
Black
Black / Jet Black Metallic
Blue
Gentian Blue Metallic / Miami Blue / Night Blue Metallic
Gray
Agate Grey Metallic / Chalk
Green
Aventurine Green Metallic
Orange
Lava Orange
Red
Carmine Red / Guards Red
Silver
Dolomite Silver Metallic / GT Silver Metallic
White
Carrara White Metallic / White
Yellow
Racing Yellow
Exterior Colors
Black
Black / Obsidian Black Metallic
Blue
Brilliant Blue Metallic
Gray
designo Shadow Grey Magno Matte / Graphite Grey Metallic / Indium Grey Metallic / Selenite Grey Metallic
Green
Not available
Orange
Not available
Red
Patagonia Red Metallic
Silver
Iridium Silver Metallic
White
designo Diamond White Metallic / Polar White
Yellow
Not available
Interior Colors
Black
Black / Black/Bordeaux Red / Black/Chalk / Black/Dark Silver / Black/Luxor Beige
Blue
Graphite Blue/Chalk
Brown
Espresso / Espresso/Cognac
Gray
Agate Grey / Graphite Blue
Red
Bordeaux Red
Beige
Not available
White
Not available
Yellow
Not available
Interior Colors
Black
Black / Black w/ Red Stitching / Deep Black
Blue
Not available
Brown
Auburn / Auburn/Black / Light Brown / Light Brown/Black / Saddle Brown
Gray
Not available
Red
Bengal Red/Black / Classic Red / Classic Red/Black
Beige
Curcuma / Curcuma/Black / Sahara Beige / Sand / Sand/Black
White
Deep White / Deep White/Black / Platinum White / Platinum White/Black / Porcelain / Porcelain/Black
Yellow
Pastel Yellow / Pastel Yellow/Black
