Porsche 718 Cayman 2.0 Turbo 982

The most commonly discussed issue on the 718 2.0 turbo. The wastegate actuator is mounted low on the turbocharger and is susceptible to water ingress and corrosion, particularly in wet climates. Symptoms include sudden boost loss (pressure dropping from 14 psi to 5-8 psi), intermittent power dips around 5,000 rpm, or an EPC warning light. Some cars have experienced this as early as 8,000 km. If caught early, the actuator can be freed and greased at a specialist for €200-400. However, if internal turbo damage has occurred or Porsche insists on full turbo replacement, costs reach €2,500-5,000. Porsche has redesigned the boost pressure converter with an added filter as a countermeasure. Regular spirited driving helps prevent seizure by keeping the mechanism active.

The 718 uses a variable-flow water pump with a vacuum-operated seal to regulate coolant flow. This seal can fail, allowing coolant to enter the vacuum lines. Failures have been reported as early as 20,000 km, with some owners needing multiple replacements within 30,000 km. Symptoms include coolant warning lights, a sweet coolant smell, or visible coolant loss with no puddle (leak only occurs when hot). The pump costs around €300-500, but labor on the mid-engine layout requires exhaust removal, bringing total costs to €800-1,400. Porsche dealer: €1,100-1,400, independent specialist: €800-1,000. Some owners have received goodwill warranty coverage from Porsche due to the high early-failure rate.

From early 2019, European-market 718 models were fitted with a gasoline particulate filter (GPF) integrated with the catalytic converter. Like diesel DPFs, these clog if the car is driven predominantly at low RPM or on short trips where the filter never reaches regeneration temperature. Multiple owners of 2019 models have reported GPF blockage at low mileages (17,000-30,000 km), with no warning light prompting a regeneration drive. Porsche has quoted €7,000-9,000 for a combined GPF/catalytic converter replacement. A forced regeneration at a specialist costs around €500-600 and may resolve the issue. Prevention: regular spirited driving at 5,000-6,500 rpm for a few minutes every week or two. Pre-2019 and US-market cars without GPF are not affected.

A manufacturing defect affecting some 718 models built between March and August 2018. The coolant expansion tank can develop hairline cracks at its welded seam, weeping coolant under pressure when hot. The leak may not show on a cold pressure test. In severe cases, the tank can burst, losing half a litre per day. On the 2.0 turbo, the engine and gearbox assembly must be removed to access the tank, making this a labor-intensive repair. Parts cost around €200-300, but total repair including engine-out labor runs €1,500-3,000 depending on the shop. Most affected cars would have been addressed under warranty.

The PDK dual-clutch transmission is generally reliable when properly maintained, but neglecting fluid changes (recommended every 60,000 km or 4 years) can lead to expensive failures. The most common PDK issue is the distance sensor failure, which causes loss of reverse gear or limp mode. Sensor replacement costs approximately €500-2,500 depending on the shop and whether the gearbox can be repaired in-situ. Full PDK replacement at a dealer costs €20,000-30,000, but this is rare and typically the result of prolonged neglect. Manual-equipped cars do not have this risk. Strict adherence to the PDK fluid service interval is the key preventive measure.

The air oil separator prevents crankcase vapors from contaminating the intake system. When its internal diaphragm deteriorates, oil mist enters the intake manifold, causing misfires, rough idle, and blue or white exhaust smoke on startup. Increased oil consumption is another symptom. In severe cases, oil particles can clog variable camshaft timing oil passages. Replacement costs €800-1,500 due to the tight mid-engine layout. This typically occurs at higher mileages (80,000+ km) and is more common on cars driven spiritedly or used for track days. Porsche recommends AOS replacement every 6 years or 120,000 km as preventive maintenance.

As a direct-injection engine, the 718 2.0 turbo is prone to carbon buildup on the backs of the intake valves because fuel is injected directly into the combustion chamber rather than washing over the valves. This typically becomes noticeable between 80,000-120,000 km, causing rough idle, hesitation, and gradual power loss. Walnut blasting is the standard cleaning method, costing €800-1,500 at a specialist. Some owners treat this as preventive maintenance around 100,000 km. Using quality fuel and regular high-RPM driving helps slow the buildup but does not eliminate it entirely.