Porsche 718 Cayman GT4 RS vs. Porsche 911 Turbo S
iSeeCars' unbiased and data-driven comparison of the Porsche 718 Cayman GT4 RS and Porsche 911 Turbo S 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 GT4 RS and the Porsche 911 Turbo S.
When we compare the Porsche 718 Cayman GT4 RS's and the Porsche 911 Turbo S's specifications and ratings, the Porsche 718 Cayman GT4 RS has the advantage in the areas of new vehicle base pricing and typical lower range of pricing for one- to five-year-old used cars. The Porsche 911 Turbo S has the advantage in the areas of resale value and base engine power. The Porsche 718 Cayman GT4 RS and Porsche 911 Turbo S have the same fuel efficiency. Based on this comparison of the Porsche 718 Cayman GT4 RS's and the Porsche 911 Turbo S's specifications and ratings, the two cars are fairly comparable.
Pricing: A used 2025 Porsche 718 Cayman GT4 RS ranges from $204,927 to $249,560 while a used 2025 Porsche 911 Turbo S is priced between $296,151 to $357,951. For a new model, the Porsche 718 Cayman GT4 RS's price is between $184,869 and $233,320, with the Porsche 911 Turbo S priced between $254,217 and $296,107.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the Porsche 718 Cayman GT4 RS loses 20.3 percent of its value and the Porsche 911 Turbo S loses 17 percent of its value. This means the Porsche 911 Turbo S retains 3.3 percentage points more of its value and has the advantage of higher resale value versus the Porsche 718 Cayman GT4 RS.
Engine Power and Fuel Efficiency Comparison: For engine performance, the Porsche 718 Cayman GT4 RS’s base engine makes 493 horsepower, and the Porsche 911 Turbo S base engine makes 640 horsepower. Both the GT4 RS and the Turbo S are rated to deliver an average of 16 miles per gallon, with highway ranges of 321 and 332 miles respectively. Both models use premium unleaded.
New Car Pricing
Asking Price:
184869 - 233320
Starting MSRP:
164200
Category Avg Starting MSRP:
(Luxury Sports Cars)
90928
Category Starting MSRP Range:
(Luxury Sports Cars)
54500 - 150000
New Car Pricing
Asking Price:
254217 - 296107
Starting MSRP:
230400
Category Avg Starting MSRP:
(Luxury Sports Cars)
90928
Category Starting MSRP Range:
(Luxury Sports Cars)
54500 - 150000
Used Car Pricing
Avg Used Car Price:
226882
Price Range:
204927 - 249560
Category Avg Price:
(Luxury Sports Cars)
121269
Category Avg Price Range:
(Luxury Sports Cars)
60394 - 258844
# Used Cars for Sale Nationally:
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
Used Car Pricing
Avg Used Car Price:
330863
Price Range:
296151 - 357951
Category Avg Price:
(Luxury Sports Cars)
121269
Category Avg Price Range:
(Luxury Sports Cars)
60394 - 258844
# Used Cars for Sale Nationally:
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
5-year Depreciation
Depreciation $:
31945
Depreciation %:
0.19455209
Resale Value $:
132255
Residual Value %:
0.80544791
Typical Category Depreciation %:
(Luxury Sports Cars)
0.27961642
Category Depreciation Range:
(Luxury Sports Cars)
0.17060832 - 0.55051463
5-year Depreciation
Depreciation $:
39308
Depreciation %:
0.17060832
Resale Value $:
191092
Residual Value %:
0.82939168
Typical Category Depreciation %:
(Luxury Sports Cars)
0.27961642
Category Depreciation Range:
(Luxury Sports Cars)
0.17060832 - 0.55051463
Porsche 718 Cayman Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
9.8 / 10
Safety:
Not available
Porsche 911 Scores & Rankings
Overall Score:
9.0 / 10
Reliability:
8.1 / 10
Retained Value:
9.999999 / 10
Safety:
Not available
iSeeCars Reliability Insights for Porsche 718 Cayman GT4 RS
Avg Life Expectancy (years):
Typical Category Life Expectancy:
(Luxury Sports Cars)
20.2
Category Life Expectancy Range:
(Luxury Sports Cars)
13.0 - 29.7
Chance of Reaching 200k Miles for a New Car:
iSeeCars Reliability Insights for Porsche 911 Turbo S
Avg Life Expectancy (years):
18.5
Typical Category Life Expectancy:
(Luxury Sports Cars)
20.2
Category Life Expectancy Range:
(Luxury Sports Cars)
13.0 - 29.7
Chance of Reaching 200k Miles for a New Car:
0.0
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
4.2095799740109765
Typical Category Recalls:
(Luxury Sports Cars)
3.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 7.2
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
7.16068364821227
Typical Category Recalls:
(Luxury Sports Cars)
3.9
Category Range for Recalls:
(Luxury Sports Cars)
0.9 - 7.2
Porsche 718 Cayman Rankings
Ranking
2 out of / 40Ranking
9 out of / 29Ranking
23 out of / 40Porsche 911 Rankings
Ranking
1 out of / 40Ranking
2 out of / 40Ranking
2 out of / 8Ranking
4 out of / 40Ranking
5 out of / 40Ranking
21 out of / 29Available Body Styles
Coupe
Available Body Styles
Convertible, Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Other Porsche 718 Cayman Trim Levels
Base, GTS 4.0, S, Style Edition
Other Porsche 911 Trim Levels
Carrera, Carrera S, Carrera T, GT3, GT3 RS, GT3 Touring, Turbo, Turbo 50 Years
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:
493 hp @ 8400 rpm
Torque:
331 foot-lbs @ 6250 rpm
Power-to-Weight Ratio (higher is better):
0.153 hp per pound
Base Drivetrain Specs
Horsepower:
640 hp @ 6750 rpm
Torque:
590 foot-lbs @ 2500 rpm
Power-to-Weight Ratio (higher is better):
0.175 hp per pound
Engine Specifications
Engine Size:
4 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
15 / 19 / 16
Range (city/hwy):
254 / 321 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
3.8 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
14 / 20 / 16
Range (city/hwy):
232 / 332 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Alloy wheels:
Standard
Apple CarPlay:
Standard
Bluetooth:
Standard
Keyless Entry:
Standard
Leather Upholstery:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power outlet:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Heated Seats
Available
Navigation System:
Available
Wireless Smartphone Charging:
Available
Adaptive Cruise Control:
N/A
Air Suspension:
N/A
Android Auto:
N/A
Automatic Parking:
N/A
Bench Seats:
N/A
Captain's seat:
N/A
Cooled/Ventilated Seats:
N/A
Front Bench Seats:
N/A
Heated Steering Wheel:
N/A
Internet Radio:
N/A
Keyless Ignition:
N/A
Massage Seats:
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
Apple CarPlay:
Standard
Bluetooth:
Standard
Keyless Entry:
Standard
Leather Upholstery:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power outlet:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Heated Seats
Standard
Navigation System:
Standard
Wireless Smartphone Charging:
N/A
Adaptive Cruise Control:
Available
Air Suspension:
N/A
Android Auto:
Standard
Automatic Parking:
N/A
Bench Seats:
Standard
Captain's seat:
N/A
Cooled/Ventilated Seats:
Available
Front Bench Seats:
N/A
Heated Steering Wheel:
Available
Internet Radio:
Standard
Keyless Ignition:
Standard
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Power Lift Gate:
Standard
Quad Seats:
N/A
Roadside assistance:
Standard
Roof Rack:
N/A
Sunroof/Moonroof:
Available
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:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
Standard
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:
9.2 cubic feet
Overall Interior Volume:
Not yet available
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:
4.5 cubic feet
Overall Interior Volume:
Not yet available
Exterior Dimensions
Curb Weight:
3227 lbs
Width:
78.5 inches
Height:
49.9 inches
Length:
175.4 inches
Wheelbase:
97.7 inches
Ground Clearance:
4 inches
Exterior Dimensions
Curb Weight:
3649 lbs
Width:
79.7 inches
Height:
51.3 inches
Length:
178.5 inches
Wheelbase:
96.5 inches
Ground Clearance:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
20.0 x 8.5 inches
Wheel Type:
painted aluminum alloy
Tire Size:
245/35ZR20
Standard Wheel/Tire Information
Wheel Size:
20.0 x 9.0 inches
Wheel Type:
painted aluminum alloy
Tire Size:
255/35ZR20
