The **turbocharger** system, critical for the 718's performance, can experience issues related to seals, wastegate actuators, or oil supply. These can lead to reduced power and increased oil consumption. Estimated repair cost: $1,500 - $3,000.

The **cooling system**, particularly hoses and radiators, can develop leaks over time. This can lead to engine overheating and potential internal damage if not addressed promptly. Estimated repair cost: $500 - $1,500.

Software Glitches and Drivability

A high number of Technical Service Bulletins (TSBs) (149) indicates potential for minor software glitches or calibration issues affecting drivability, infotainment, or electronic systems. These are typically resolved with software updates. Estimated repair cost: $150 - $500.

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2021 Porsche 718 Cayman Maintenance guide

Name: Maintenance dataset for 2021 Porsche 718 Cayman
Creator: Carfocal

v1.0Updated Jun 17, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2021 Porsche 718 Cayman boasts excellent initial reliability with zero recalls and complaints, though a high TSB count (149) suggests attention to minor drivability and software issues. Owners should prioritize adherence to the manufacturer's maintenance schedule, focusing on premium synthetic oil changes and regular inspections of the turbocharger and cooling system to prevent potential issues.

View Critical Issue: Turbocharger Issues

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Reliability Score

Est. Annual Maintenance Cost

$800 - $1,200

TSBs & Recalls

149 TSBs | 0 Recalls

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Key Takeaways

Excellent initial reliability with zero recalls and complaints.
High TSB count (149) indicates potential for minor software and drivability issues.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance