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TL;DR

No major differences — 16 of 23 specs match.
Spec Porsche 718 Cayman (982) GT4 Porsche 718 Cayman (982) GTS 4.0 Difference
Model Years 2017–2025 2017–2025
Release Date 2017-12-08 2017-12-08
Body Style coupe coupe
Configuration Flat 6 Flat 6
Displacement 4.0L (244 ci) 4.0L (244 ci)
Engine Code MA1.22 MA1.22
Crank cross-plane cross-plane
Aspiration naturally aspirated naturally aspirated
Fuel gasoline gasoline
Redline 7,800 rpm 7,800 rpm
Power 414 hp @ 7,600 rpm 394 hp @ 7,000 rpm -4.8%
Torque 310 ft·lbs @ 5,000 rpm 310 ft·lbs @ 5,000 rpm
Compression 13.0:1 13.0:1
Bore × Stroke 102.0 × 81.0 mm 102.0 × 81.0 mm
Powertrain ICE ICE
Drivetrain RWD RWD
Transmission manual 6-speed manual 6-speed
Curb Weight 3,131 lbs 3,097 lbs -1.1%
Power-to-Weight 292 hp/ton 280 hp/ton -3.8%
0–100 km/h 4.4s 4.5s +2.3%
Top Speed 189 mph 182 mph -3.6%
MSRP $101,200 $89,100 -12.0%
Fuel Economy 20 / 25 / 22 mpg 17 / 24 / 19 mpg -13.6%