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 severity
Typical 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 severity
Typical 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 severity
Typical 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 severity
Typical 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 severity
Typical 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 severity
Symptoms: 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
Owner tips
Check oil level every 500 miles on the 2.0L turbo — consumption above 1 qt per 2,000 mi is a red flag for bore scoring
Insist on full service history with documented PDK fluid changes every 40k miles; skipped services kill the transmission cooler and clutches prematurely
Pre-purchase inspection should include compression test and borescope of cylinders on 2.0L engines — bore scoring often shows before oil consumption becomes severe
Keep fuel system clean with top-tier fuel; these direct-injection turbo motors are sensitive to carbon buildup and fuel quality
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.
Fitment notes: Located in front trunk (frunk); AGM battery required for electrical system compatibility
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Control Modules — 2020 Porsche 718 Cayman
Every control module on the 2018-2023 Porsche 718 Cayman — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Transmission Control Unit (TCU)3.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Transmission housing, integrated valve body (PDK) or tunnel (manual)
🔧 PIWIS III + PPN subscription
⚠️ PDK models only; requires transmission adaptation after coding
Electric Power Steering Control Unit (EPS)2.5 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Steering column, integrated with steering rack
🔧 PIWIS III + PPN subscription
⚠️ Steering angle sensor calibration required after coding
Park Assist Control Unit (ParkAssist)0.8 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Rear trunk, left side panel
🔧 PIWIS III
⚠️ Optional; sensor calibration may be needed
Seat Memory Control Unit (Seat Module)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Driver seat base, under seat
🔧 Autel MaxiSys or PIWIS
⚠️ Optional comfort seats; basic adaptation only
Sport Chrono Control Unit (Sport Chrono)dealer / factory tool +0.3 hr▸ programming details
📍 Center console, integrated with PCM/DME
🔧 PIWIS III
⚠️ Optional; software-based, no separate module replacement
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2020 Porsche 718 Cayman 2.0L H4 Turbo and can vary by trim.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.