Introduced for the 2020 model year, the 718 Cayman GTS 4.0 replaced the earlier turbo-four GTS with a naturally aspirated 4.0-liter flat-six shared in detuned form with the GT4. The mid-mounted six makes 394 horsepower and 309 lb-ft of torque and revs to 7,800 rpm, driving the rear wheels through a standard six-speed manual or optional seven-speed PDK. Porsche quotes a 0-60 mph time of 4.3 seconds and a 182-mph top track speed. The GTS 4.0 is widely regarded as one of the most engaging variants of the 718 line, which ended after 2025.
Specifications by source
Each figure carries an evidence mark and a text label; expand a value for its full provenance — citation, verification, test conditions, and any alternate figures.
A. Acceleration
0–100 km/h4.00 sIndependent testWikipedia+–Show full source detail and alternate values
Official specification · Accessed 21 Jun 2026 · Specifications table – Cayman GT4 RS / Spyder RS, 0-100 km/h
Porsche factory claim with PDK (4.5 s with the manual gearbox). Read via the Wikipedia 982 specifications table, which transcribes Porsche's figures. [Figure is Porsche's official spec, read via en.wikipedia.org.]
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0–100 mph8.50 sIndependent testCar and Driver+–Show full source detail and alternate values
Press release · Accessed 21 Jun 2026 · Powertrain - Acceleration from 0-200 km/h
Porsche factory claim, 0-200 km/h for the 718 GTS 4.0 models; the seed is the Cayman GTS 4.0 manual, which is covered by this U.S. press kit.
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0–60 mphiMethodology noteRollout (1ft) handling differs between testers and manufacturers.4.30 sManufacturer claimPorsche+–Show full source detail and alternate values
Official specification · Accessed 21 Jun 2026 · Performance – Top track speed (Cayman)
Porsche factory figure (4.3 s manual; 3.8 s with PDK and the Sport Chrono Package per the 982 model summary). No independently instrumented test was located, so the manufacturer claim is preferred.
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Quarter-mile elapsed time12.50 sManufacturer claimPorsche+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 12.5 s; stored canonically.
Instrumented road test · Published 22 Jun 2021 · Accessed 21 Jun 2026 · C/D Test Results - 100 mph
Car and Driver instrumented 100-0 mph braking for the 2021 Porsche 718 Cayman GTS 4.0 Manual: 284 ft. Pirelli P Zero PZ4 tires. Exact trim and powertrain, earlier 982 model year.
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C. Dimensions
Height1262 mmManufacturer claimPorsche+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 49.7 in; stored canonically.
Official specification · Accessed 21 Jun 2026 · Performance – Top track speed (Cayman)
Six cylinders, boxer (flat) configuration.
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Engine displacement4.0 LManufacturer claimPorsche+–Show full source detail and alternate values
Verified
E. Fuel Economy
Estimated range (city)iMethodology noteEstimated from tank capacity and quoted city economy — not an instrumented range.517 kmCalculated—+–Show full source detail and alternate values
Verified
Originally reported as 516.974745 km; stored canonically.
Calculated from Fuel tank capacity · Fuel economy (city).
Estimated range (combined)iMethodology noteEstimated from tank capacity and quoted combined economy — not an instrumented range.571 kmCalculated—+–Show full source detail and alternate values
Verified
Originally reported as 571.393165 km; stored canonically.
Calculated from Fuel tank capacity · Fuel economy (combined).
Estimated range (highway)
F. Performance
Lateral accelerationiMethodology noteSkidpad radius and surface affect results.1.04 gIndependent testCar and Driver+–Show full source detail and alternate values
Instrumented road test · Published 22 Jun 2021 · Accessed 21 Jun 2026 · C/D Test Results - 100 mph
Car and Driver instrumented roadholding on the 300-ft skidpad for a 2021 718 Cayman GTS 4.0 manual: 1.04 g. Same 982 GTS 4.0 trim and drivetrain, earlier model year.
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Power-to-weight ratioi
G. Practicality
Cargo volume150 LManufacturer claimPorsche+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 5.3 ft³; stored canonically.
Official specification · Accessed 21 Jun 2026 · Performance – Top track speed (Cayman)
Front tire on 8.5J x 20 wheel. The GTS 4.0 US technical-data PDF prints the front wheel (8.5J x 20 ET57) but not the tire size string; 235/35 ZR20 is the documented Porsche 718 GTS 4.0 front fitment, not confirmed verbatim on the cited PDF.
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Rear tire size265/35 ZR20Manufacturer claimPorsche+–Show full source detail and alternate values
10. Weight
Curb weight1432 kgManufacturer claimPorsche+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 3157 lb; stored canonically.
Official specification · Accessed 21 Jun 2026 · Performance – Top track speed (Cayman)
Porsche DIN unladen weight 3,157 lb for the Cayman GTS 4.0. No independently published tested curb weight was located.
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Sources
Backed by 5 source documents. Expand any value for its full provenance — citation, verification, test conditions, and alternate figures.
Contributor mode. Expand any value above to suggest a correction or add another source; the metrics below have no published value yet. Every submission carries a source and is editor-verified before it appears.
Official specification · Accessed 21 Jun 2026 · Performance – Top track speed (Cayman)
Six-speed manual standard; seven-speed PDK dual-clutch optional. Standard gearbox recorded here.
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iMethodology noteEstimated from tank capacity and quoted highway economy — not an instrumented range.
653 km
Calculated
—
+–Show full source detail and alternate values
Verified
Originally reported as 653.020711 km; stored canonically.
Calculated from Fuel tank capacity · Fuel economy (highway).
Fuel economy (city)iMethodology noteLower L/100km is better; higher mpg is better — direction is on the canonical L/100km.12.4 L/100kmHomologationUS EPA+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 19 mpg; stored canonically.
Government record · Accessed 21 Jun 2026 · Vehicle class – Two Seaters
EPA city rating for the 2025 718 Cayman GTS (4.0 L, AM-S7 PDK, RWD).
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Fuel economy (combined)iMethodology noteLower L/100km is better; higher mpg is better — direction is on the canonical L/100km.11.2 L/100kmHomologationUS EPA+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 21 mpg; stored canonically.
Government record · Accessed 21 Jun 2026 · Vehicle class – Two Seaters
EPA combined rating for the 2025 718 Cayman GTS (4.0 L, AM-S7 PDK, RWD).
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Fuel economy (highway)iMethodology noteLower L/100km is better; higher mpg is better — direction is on the canonical L/100km.9.8 L/100kmHomologationUS EPA+–Show full source detail and alternate values
VerifiedHigh confidence
Originally reported as 24 mpg; stored canonically.
