The 2024 718 Cayman S with the 2.5L turbo flat-four is still very new, but shares the 982.2 platform architecture with models back to 2017. Early-generation 2.0L and 2.5L turbo fours (2017-2019) saw catastrophic engine failures from bore scoring and spun bearings, though Porsche claims revisions after 2019 addressed these issues. Time will tell if 2024s hold up better.
Turbo Four Cylinder Bore Scoring and Spun Bearings
Occasional · high severity
Typical onset: 30,000-70,000 mi
Symptoms: metallic knocking or ticking at idle, oil consumption over 1 qt per 1,000 mi, loss of oil pressure warning, white or blue smoke from exhaust
Fix: Complete engine rebuild or short block replacement required. Involves dropping the engine, inspecting cylinder walls and bearings, and typically replacing pistons, rings, bearings, and machining or replacing block. 35-50 hours labor depending on extent of damage.
Estimated cost: $15,000-25,000
PDK Transmission Oil Cooler Failure
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: transmission fluid leaking from front of car, transmission overheating warnings on dash, hard or delayed shifts when hot, burnt transmission fluid smell
Fix: Oil cooler lines corrode or cooler itself develops leaks. Requires front bumper removal and cooler replacement with updated lines. If contamination occurred, full transmission fluid flush essential. 8-12 hours labor.
Estimated cost: $2,500-4,000
Transmission Mount Failure
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: clunking when shifting or accelerating hard, excessive driveline movement felt through cabin, visible cracking or separation in rubber mount, vibration at idle in gear
Fix: Rear transmission mount deteriorates from heat and stress, especially on manual cars driven hard. Engine must be supported and mount replaced from underneath. 3-5 hours labor.
Estimated cost: $800-1,400
Fuel Filter Clogging from Ethanol Degradation
Occasional · medium severity
Symptoms: intermittent misfires or rough running, loss of power under load, fuel pump priming noise louder than normal, check engine light with lean codes
Fix: Modern ethanol blends can degrade and deposit debris in filter, especially if car sits for months. Filter is in-tank assembly requiring fuel tank drop. 4-6 hours labor.
Estimated cost: $1,200-1,800
Turbocharger Wastegate Rattle
Common · low severity
Typical onset: 20,000-60,000 mi
Symptoms: rattling noise from engine bay on cold start, rattle disappears after 30 seconds to 1 minute, no performance loss, noise most noticeable in enclosed spaces
Fix: Wastegate actuator arm develops play in bushings, causing rattle until oil pressure builds. Porsche considers this normal characteristic unless accompanied by boost issues. Turbo replacement is only fix. 12-16 hours labor if pursued.
Estimated cost: $4,500-6,500
Crankshaft Position Sensor Failure
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: sudden no-start condition, intermittent stalling while driving, check engine light with crank sensor codes, engine cranks but won't fire
Fix: Sensor located at rear of engine near flywheel, requires significant access work. Engine may need to be dropped or partially lowered depending on approach. 6-10 hours labor.
Estimated cost: $1,500-2,500
Owner tips
Change oil every 5,000 miles with Porsche A40 spec oil regardless of what the computer says — turbo fours are hard on oil and early changes may prevent bearing issues
Avoid extended idling or short trips under 10 minutes — turbo four needs to reach full operating temp to burn off condensation in crankcase
Use top-tier fuel and add fuel stabilizer if storing more than 30 days to prevent filter clogging
Inspect transmission oil cooler area annually for seepage — catching leaks early prevents transmission damage
If buying used, get a pre-purchase inspection including borescope of cylinders and oil analysis to check for early bore scoring
Wait another 2-3 years to see if the 2024+ engines prove more reliable than 2017-2019 models — early turbo fours have catastrophic failure history that's not yet proven resolved on newest generation.
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 vehicle electronics
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Every control module on the 2024-2026 Porsche 718 Cayman S — 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)2.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Transmission housing, driver side
🔧 PIWIS IV + PPN online
⚠️ PDK transmission; requires adaptation and clutch learning procedure
⚠️ Optional equipment; damper calibration required after replacement
Park Assist Control Unit (ParkAssist)0.8 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Rear trunk area, left side
🔧 PIWIS IV
⚠️ Sensor calibration required after replacement; supports 360-degree camera
Seat Memory Control Unit (Seat Module)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Under driver seat
🔧 Autel MaxiSys / PIWIS
⚠️ Optional equipment; memory positions lost on 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 2024 Porsche 718 Cayman S 2.5L Turbo H4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.