Common Problems with the Porsche Cayenne Turbo S (958) 2015-2017
While the Cayenne Turbo S offers thrilling performance, it comes with some recurrent issues that owners and prospective buyers should know about.
1. Engine Oil Leaks
- Problem: Oil leaks are a notable issue in the Cayenne Turbo S, particularly around the turbocharger oil lines and valve cover gaskets. This can lead to oil loss, which, if unchecked, could damage the engine.
- Cause: The high-pressure turbo system in the 4.8-liter V8 places additional stress on oil seals and gaskets, causing wear over time.
- Solution: Regular inspections of the turbo oil lines, valve cover gaskets, and oil seals can help catch leaks early. Replacing worn seals and gaskets is essential to prevent oil seepage and potential engine damage.
- Repair Cost: Repairs for oil leaks vary depending on the source but typically range from $500 to $1,500, especially if the turbocharger oil lines need to be replaced.
2. Air Suspension Failure
- Problem: The Cayenne Turbo S is equipped with an advanced air suspension system for improved comfort and handling. However, this system is prone to failure, leading to uneven ride height, poor handling, or a harsh ride.
- Cause: Air suspension components, including air struts, compressor, and sensors, can wear out over time, especially under heavy use. Leaks in the air struts or compressor failure are common culprits.
- Solution: Regularly inspect the suspension system for signs of wear or leaks. Replacing faulty air struts or repairing the compressor can restore ride quality. Some owners opt for aftermarket solutions to replace worn air suspension parts.
- Repair Cost: Repairing or replacing air suspension components can be costly, with individual air struts typically priced between $1,000 and $2,000 each. A full air suspension repair could cost upwards of $4,000 to $6,000.
3. Coolant Leaks
- Problem: Coolant leaks are a recurring issue with the Cayenne Turbo S, particularly around the water pump, radiator, and coolant pipes.
- Cause: The Cayenne’s powerful engine generates a lot of heat, which can stress the cooling system. Over time, the rubber seals and hoses may deteriorate, leading to leaks.
- Solution: Routine inspections of the cooling system are essential, especially at higher mileage. Replacing the water pump, radiator hoses, and coolant pipes as preventive maintenance can help avoid costly overheating problems.
- Repair Cost: Water pump replacement costs range from $800 to $1,500. Radiator and hose repairs can add another $500 to $1,000 depending on parts and labor.
4. Transfer Case Issues
- Problem: Transfer case issues are a common complaint with the Cayenne Turbo S, leading to jerky acceleration, vibrations, and difficulty in maintaining smooth power delivery to all wheels.
- Cause: The transfer case is known to suffer from wear and internal fluid breakdown, affecting its smooth operation. This issue is particularly common in models with higher mileage.
- Solution: Regular transfer case fluid changes are essential for longevity. If issues persist, a full transfer case rebuild or replacement may be necessary.
- Repair Cost: Fluid changes can cost around $200 to $400, while a transfer case rebuild or replacement may run from $2,000 to $4,000 depending on parts and labor.
5. Turbocharger and Turbo Plumbing Failures
- Problem: Given the high-output nature of the Turbo S, turbocharger-related issues, such as boost leaks or turbo failure, can occur, particularly with extended use.
- Cause: High boost pressure and extreme heat over time can lead to issues with the turbo plumbing, intercoolers, and, in some cases, the turbo units themselves.
- Solution: Regular inspection of turbo plumbing and intercoolers, as well as timely oil changes with high-quality synthetic oil, can help prolong turbo lifespan. If a turbocharger fails, replacement is necessary.
- Repair Cost: Turbo plumbing repairs can range from $500 to $1,000. Replacing a turbocharger, however, can be very costly, typically ranging from $3,000 to $5,000 per turbo, with the Cayenne Turbo S having two turbos.
6. Brake Wear and Replacement Costs
- Problem: The Cayenne Turbo S is a heavy, high-performance SUV, which means it puts a lot of stress on its brakes. Brake components, especially the carbon-ceramic brakes (if equipped), can wear out relatively quickly and are expensive to replace.
- Cause: Aggressive driving, frequent stop-and-go conditions, and the vehicle’s weight contribute to accelerated brake wear.
- Solution: Regular inspection and replacement of brake pads and rotors are essential. Consideration of driving habits may extend brake lifespan. Replacing with high-performance or aftermarket components can help mitigate some replacement costs.
- Repair Cost: Brake pad replacements generally cost between $400 and $700. For models equipped with carbon-ceramic brakes, replacing rotors can cost upwards of $10,000 for all four wheels.
7. Electrical and Infotainment System Glitches
- Problem: Owners of the Cayenne Turbo S have reported various electrical issues, including problems with the infotainment system, navigation, and Bluetooth connectivity. Some owners also report issues with sensors, such as parking sensors or adaptive cruise control.
- Cause: The advanced electronics in the Cayenne Turbo S are complex, and software bugs, wiring faults, or sensor malfunctions can lead to glitches.
- Solution: Keeping the infotainment software updated may help resolve minor issues. For persistent problems, an inspection by a qualified technician is recommended. Replacing faulty sensors or updating software may resolve most electrical issues.
- Repair Cost: Minor software updates or sensor replacements may cost between $200 and $500, while larger infotainment system repairs can cost up to $1,500.
What to Look for When Buying a 2015-2017 Porsche Cayenne Turbo S
Purchasing a used Porsche Cayenne Turbo S requires careful examination to ensure it’s in good condition and free of major problems. Here’s what to focus on:
- Service History: Ask for complete service records, especially for regular maintenance on the air suspension, cooling system, and transfer case. A well-maintained Cayenne Turbo S will be less likely to encounter major problems.
- Transmission and Transfer Case Health: Test drive the vehicle and pay attention to any jerking, grinding, or vibrations, which may indicate issues with the transfer case or transmission.
- Oil and Coolant Leaks: Look under the hood for any signs of oil or coolant leaks, especially around the turbocharger, water pump, and radiator.
- Suspension Condition: Check the air suspension by adjusting the ride height to see if it responds quickly and evenly. An uneven or harsh ride may indicate air suspension issues.
- Brake Condition: Inspect the brakes for wear, especially if the vehicle is equipped with carbon-ceramic brakes. High replacement costs make it essential to assess brake condition before buying.
Cost of Ownership: Is It Expensive?
The Porsche Cayenne Turbo S is a high-performance luxury SUV, and ownership costs reflect this:
- Fuel Economy: The 4.8-liter twin-turbo engine averages around 14-18 MPG, so fuel costs can be significant, especially if you have a heavy foot.
- Maintenance and Repairs: Regular maintenance on the Cayenne Turbo S can cost $1,500 to $3,000 per year. Major repairs, particularly to the air suspension, transfer case, or turbocharger system, can add significantly to ownership costs.
- Insurance: Insurance premiums for the Cayenne Turbo S are typically higher than average, often ranging from $1,500 to $2,500 per year, depending on your driving record and location.
- Parts Availability: While many parts are readily available, original Porsche parts, particularly for high-performance components, can be costly.
Conclusion
The 2015-2017 Porsche Cayenne Turbo S delivers incredible performance, luxury, and style but comes with some known challenges, especially in terms of maintenance. From air suspension and transfer case issues to turbo-related maintenance, potential buyers should be prepared for higher-than-average upkeep costs. That said, a well-maintained Cayenne Turbo S can be a joy to drive, with thrilling power and advanced technology.
If you’re considering buying a used Cayenne Turbo S, focus on models with a complete service history, particularly for the transmission, suspension, and cooling system. For enthusiasts looking for a high-performance luxury SUV, the Porsche Cayenne Turbo S remains a remarkable option, but it requires a commitment to regular and often pricey maintenance.