Porsche 718 Cayman GT4 RS vs. Porsche 911 GT3 RS

iSeeCars' unbiased and data-driven comparison of the Porsche 718 Cayman GT4 RS and Porsche 911 GT3 RS 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 GT3 RS.

When we compare the Porsche 718 Cayman GT4 RS's and the Porsche 911 GT3 RS'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 GT3 RS has the advantage in the areas of resale value and base engine power. Based on this comparison of the Porsche 718 Cayman GT4 RS's and the Porsche 911 GT3 RS'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 GT3 RS is priced between $367,645 to $451,344. For a new model, the Porsche 718 Cayman GT4 RS's price is between $184,869 and $233,320, with the Porsche 911 GT3 RS priced between $275,483 and $385,790.

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 GT3 RS loses 17 percent of its value. This means the Porsche 911 GT3 RS 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 GT3 RS base engine makes 518 horsepower.

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Model & Pricing
Porsche 718 Cayman GT4 RS
Porsche 911 GT3 RS

2025 Porsche 718 Cayman GT4 RS
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Porsche 718 Cayman GT4 RS for Sale

2025 Porsche 911 GT3 RS
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Porsche 911 GT3 RS for Sale

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:

275483 - 385790

Starting MSRP:

241300

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:

416893

Price Range:

367645 - 451344

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 $:

41168

Depreciation %:

0.17060832

Resale Value $:

200132

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 GT3 RS

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

Luxury Sports Cars with Best Resale Value

2 / 39

Best Gas Mileage Luxury Sports Cars

5 / 39

Most Affordable Luxury Sports Cars

7 / 24

Luxury Sports Cars with the Most Horsepower

21 / 39

Porsche 911 Rankings

Best Luxury Sports Cars

1 / 39

Luxury Sports Cars with Best Resale Value

1 / 39

Best Manual Transmission Luxury Sports Cars

1 / 8

Most Reliable Luxury Sports Cars

3 / 39

Best Gas Mileage Luxury Sports Cars

9 / 39

Most Affordable Luxury Sports Cars

16 / 24

Luxury Sports Cars with the Most Horsepower

20 / 39

Available Body Styles

Coupe

Available Body Styles

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 Touring, Turbo, Turbo 50 Years, Turbo S

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

2026 NHTSA Overall Rating:

Not yet available

2026 NHTSA Front Crash Overall Rating:

Not yet available

2026 NHTSA Side Crash Overall Rating:

Not yet available

2026 NHTSA Rollover Rating:

Not yet available

IIHS Safety Rating:

Not yet available

Safety Ratings

NHTSA Safety Rating (last 5 year average):

Not yet available

2026 NHTSA Overall Rating:

Not yet available

2026 NHTSA Front Crash Overall Rating:

Not yet available

2026 NHTSA Side Crash Overall Rating:

Not yet available

2026 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:

518 hp @ 8500 rpm

Torque:

342 foot-lbs @ 6300 rpm

Power-to-Weight Ratio (higher is better):

0.159 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:

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):


Not yet available

Range (city/hwy):

Not yet available

Recommended Fuel Type:

Not yet available

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:

Available

Power outlet:

Standard

Satellite radio:

Standard

Voice Recognition:

Standard

Heated Seats

N/A

Navigation System:

Standard

Wireless Smartphone Charging:

Standard

Adaptive Cruise Control:

N/A

Air Suspension:

N/A

Android Auto:

Standard

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:

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:

N/A

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:

Not yet available

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:

3268 lbs

Width:

79.8 inches

Height:

52 inches

Length:

180 inches

Wheelbase:

96.7 inches

Ground Clearance:

3.9 inches

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 10.0 inches

Wheel Type:

painted aluminum alloy

Tire Size:

275/35ZR20

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