The 982-generation 718 Cayman is mechanically solid overall, but the 2.0L turbo-four has documented bore-scoring and piston ring issues that can devastate engines between 30,000-70,000 miles. The 2.7L six is more durable but still shares some cooling and mount concerns.
2.0L Turbo Four Cylinder Bore Scoring / Piston Ring Failure
Occasional · high severityTypical onset: 30,000-70,000 mi
Symptoms: Excessive oil consumption (1 qt per 1,000 mi or worse), Blue smoke on cold start or under load, Loss of compression, rough idle, Check engine light with misfire codes
Fix: Complete engine rebuild or short block replacement. Cylinders score due to inadequate lubrication or thermal stress; piston rings fail prematurely. 35-45 labor hours including removal, machining/replacement, reinstallation, and fluid flush.
Estimated cost: $12,000-18,000
PDK Transmission Oil Cooler Leak
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: Transmission fluid spots under car (red/brown fluid), Transmission temperature warning on hard driving, Slightly delayed shifts when hot
Fix: Oil cooler lines or the cooler itself develop leaks at crimp points or seals. Requires dropping undertray, sometimes partial transmission drop for access. 3-5 hours labor plus fluid refill and adaptation procedure.
Estimated cost: $800-1,400
Transmission Mount Failure (Rear Mount)
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Clunking on hard shifts or acceleration, Vibration through cabin at idle in gear, Excessive driveline lash when reversing throttle
Fix: Rear transmission mount tears or separates due to mid-engine torque loads. Requires lift access and some exhaust/heat shield removal. 2-3 hours labor, straightforward but access is tight.
Estimated cost: $600-1,000
Fuel Filter Clogging (Turbo Models)
Occasional · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Rough idle, hesitation under boost, Intermittent lean codes or fuel trim faults, Stumbling on hard acceleration
Fix: In-tank fuel filter clogs prematurely on some batches, especially if car sat or used lower-grade fuel. Requires fuel tank drop or pump access panel removal. 2-3 hours labor.
Estimated cost: $400-700
Head Gasket Weeping (2.0L Turbo)
Rare · high severityTypical onset: 50,000-90,000 mi
Symptoms: Oil seepage at cylinder head mating surface, Coolant loss with no external leak, White exhaust smoke in severe cases
Fix: Early 2.0L engines had head gasket batch issues; requires heads-off service. 20-25 hours labor for both banks, includes resurface if warpage present.
Estimated cost: $5,000-8,000
Crankshaft Position Sensor Failure
Occasional · high severitySymptoms: No-start condition, cranks but won't fire, Intermittent stalling at idle or low RPM, Check engine light with crank sensor code
Fix: Sensor fails due to heat or vibration. Located low on engine, requires undertray removal and sometimes starter removal for access. 1.5-2.5 hours labor depending on model/access.
Estimated cost: $350-600
The 2.7L six is the safer bet used; avoid high-mileage 2.0L turbos unless compression test and oil consumption records are spotless — engine rebuilds eclipse the car's value quickly.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.