"What are the reliability issues with the 991 turbo S?"

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Based on my research, here are the key reliability issues with the Porsche 991 Turbo S:

**Common Reliability Issues:**

1. **Ignition Coil Failures** - Multiple reports of ignition coil issues, particularly on 991.1 models (2012-2016). Symptoms include rough idling, engine misfires, and check engine lights. Some owners report needing to replace multiple coils.

2. **Coolant System Issues** - Coolant leaks are a known problem, particularly around the turbocharger coolant lines. This can lead to overheating if not addressed promptly.

3. **PDK Transmission Concerns** - While generally reliable, some 991.1 models have experienced PDK faults, including issues with reverse gear engagement and transmission control module problems.

4. **Turbocharger Oil Leaks** - Some owners report oil leaks from the turbocharger system, which can affect performance and create mess issues.

5. **Fuel System Issues** - Reports of fuel pressure irregularities and fuel pump problems, particularly in higher-mileage examples.

**Good News:**
- The 991 Turbo S doesn't suffer from the infamous IMS bearing issues that affected earlier 911 generations (996/997.1)
- Overall reliability is generally good for a high-performance sports car
- The 3.8L twin-turbo engine is robust when properly maintained

**Maintenance Recommendations:**
- Regular oil changes with proper synthetic oil
- Monitor coolant levels and check for leaks
- Address ignition issues promptly
- Have PDK transmission serviced according to schedule

The 991.2 models (2017-2019) addressed many of the early issues and are generally considered more reliable. Would you like me to help you find specific 991 Turbo S listings or compare reliability with other 911 generations?

Lot PBS773080: 2011 Porsche 911 Turbo S

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Lot PBS773080: 2011 Porsche 911 Turbo S

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