Porsche 718 Cayman GTS 4.0: 40,000-Mile Long-Term Review

The Porsche 718 Cayman GTS 4.0 stands out as a pinnacle of engineering, blending raw performance with surprising daily usability. Powered by a naturally aspirated 4.0-liter flat-six engine producing 394 horsepower and 317 lb-ft of torque (PDK version), this mid-engine coupe delivers thrilling acceleration—0-60 mph in 3.9 seconds—and a top speed of 182 mph. Over extended testing periods exceeding 40,000 miles, it proves remarkably reliable, maintaining peak performance while offering better-than-expected fuel economy.

Engine and Powertrain Excellence

At the heart of the GTS 4.0 lies Porsche’s high-revving 4.0-liter flat-six, revving to 7,800 rpm with a distinctive growl that enthusiasts crave. Paired with either a six-speed manual or seven-speed PDK dual-clutch transmission, it propels the car from 0-100 km/h in 4.0 seconds (PDK) or 4.5 seconds (manual). The PDK shifts with precision across modes like Normal for efficiency, Sport for sharper responses, and Sport+ for track-ready aggression.

Long-term tests confirm the powertrain’s durability. After 40,000 miles, acceleration figures remained nearly identical to factory specs, with no degradation in responsiveness. The manual option, while slightly slower (309 lb-ft torque), enhances driver engagement through tactile shifts.

Chassis Dynamics and Handling Precision

Balance defines the 718 Cayman’s chassis. Mid-engine layout and lightweight construction (around 3,100 lbs) yield neutral handling, with steering that feels like an extension of the driver’s intent. Even without optional PASM, the suspension strikes a compliant yet composed ride, absorbing bumps without compromising cornering grip.

Skidpad tests show impressive lateral grip, while quarter-mile times of 12.1 seconds at 118 mph underscore its straight-line prowess. Reviewers note it outperforms many rivals in feedback and poise, making it ideal for backroads or highways.

Real-World Fuel Efficiency and Economy

Despite its performance credentials, the GTS 4.0 surprises with efficiency. Long-term averages hit 27.1 mpg (UK) or 21 mpg (US combined, exceeding EPA estimates by 2 mpg over 40,000 miles). In Normal mode at steady speeds, figures climb to 30-33 mpg. City driving benefits from smooth PDK shifts, while highway cruising remains comfortable.

• Combined Economy: 11.1 L/100 km (tested)
• Long-Haul Average: 21-27 mpg
• Best Recorded: 33 mpg (efficient driving)

Interior Comfort and Practicality

Porsche’s cabin excels in ergonomics, with supportive seats, a precise steering wheel, and high-quality materials. The hatchback design offers usable cargo space, enhancing daily practicality—rare for a sports car. Over months of testing, it handled road trips effortlessly, riding better than some sedans.

Logbook praise highlights its versatility: interstate comfort matches twisty-road thrills. No major issues arose, with mileage logs showing consistent enjoyment from editors and testers.

Reliability and Maintenance Insights

After 40,000 miles, the GTS showed zero performance drop, solidifying Porsche’s reputation for durability. Brakes, tires, and suspension held up admirably, with costs aligning to expectations for a premium sports car. No breakdowns or electronic faults reported in extended tests.

Insurance groups at 47/50 reflect its performance, but low running costs (e.g., £883 quote) make it accessible. Warranties cover 4 years/50,000 miles basic.

Competitive Landscape

The GTS 4.0 benchmarks against the BMW M4, Chevrolet Corvette, and Jaguar F-Type, excelling in balance and engagement. It outperforms in chassis feedback and usability, often deemed the best under $130,000.

Driving Experience Across Modes

Normal Mode: Prioritizes comfort and efficiency for commutes.
Sport Mode: Tightens suspension and shifts for spirited drives.
Sport+ Mode: Unleashes full potential for tracks or canyons.

Reviewers call it a “landmark enthusiast vehicle,” with undiminished passion over time.

Pricing and Value Proposition

Starting around $100,000-$122,000 equipped, it justifies the cost through lasting appeal and low depreciation in performance. As a used buy, high-mileage examples retain sharpness.

Pros and Cons

• Pros: Exceptional handling, reliable powertrain, versatile usability, thrilling engine note.
• Cons: Firm ride without PASM, premium pricing, manual launch requires skill.

FAQ

Is the Porsche 718 Cayman GTS 4.0 a good daily driver?

Yes, its comfortable ride, hatchback practicality, and 21-27 mpg make it viable for everyday use.

How reliable is it long-term?

Extremely—40,000 miles with no issues and unchanged performance.

Manual or PDK transmission?

PDK for speed, manual for purest engagement; both excel.

What’s the fuel economy like?

Averages 27 mpg, up to 33 mpg efficiently driven.

Best alternatives?

BMW M4 or Corvette, but none match its balance.