The 2005 Porsche Boxster, known as the 987 generation, marked an evolution in the Boxster line with improvements in styling, handling, and performance. As a mid-engine roadster, it offers the unique driving experience Porsche is known for, along with an affordable entry point into sports car ownership. However, as it ages, the 2005 Boxster also comes with its share of common issues that prospective and current owners should be aware of to keep it running smoothly. In this article, we’ll delve into the known problems for this model year, give some buying tips, and discuss what ownership costs might look like.
Common Problems with the 2005 Porsche Boxster
1. Intermediate Shaft (IMS) Bearing Failure
The infamous IMS bearing failure is a well-known issue for early 987 Boxsters. This bearing, which supports the intermediate shaft inside the engine, can fail unexpectedly and lead to catastrophic engine damage. Symptoms may include metal shavings in the oil filter or unusual engine noises. Porsche addressed the IMS bearing issue in later models, but for the 2005 Boxster, it remains a risk. Many owners choose to replace the bearing as a preventive measure, though the replacement cost can be high. For those buying a used 2005 Boxster, it’s wise to confirm whether the IMS bearing has already been upgraded.
2. Rear Main Seal (RMS) Oil Leaks
Another common issue in the 2005 Boxster is the rear main seal, which can develop an oil leak over time. Signs of a leak include oil spots under the car and visible oil around the engine area, particularly near the transmission. While RMS leaks aren’t immediately catastrophic, they can worsen if left unaddressed, potentially leading to further engine wear. Replacing the RMS requires removing the transmission, which can be labor-intensive and expensive. Many owners opt to replace the RMS if they are already addressing the IMS bearing, as it makes sense to tackle both issues simultaneously.
3. Cooling System Problems
The cooling system in the 2005 Boxster, while generally effective, can experience issues due to aging components. Common problem areas include cracked coolant expansion tanks, radiator leaks, and failing water pumps. Coolant leaks are often noticeable by puddles of coolant under the car, a sweet smell around the vehicle, or an overheating engine. Coolant system maintenance is essential for the Boxster, as overheating can lead to expensive engine repairs. Replacing the water pump and checking the coolant hoses regularly are effective preventive steps.
4. Convertible Top Mechanism and Window Regulator Failures
The convertible top in the 2005 Boxster is generally reliable, but over time, wear and tear can lead to mechanical failures, such as the top not operating smoothly or becoming stuck halfway. Additionally, the window regulators, which control the position of the windows, are prone to failure and may cause the windows to malfunction or make grinding noises. Convertible top issues often stem from broken cables or worn-out motors, while window regulators may require complete replacement when they fail. Both repairs can be costly, especially if parts need to be sourced directly from Porsche.
5. Air-Oil Separator Issues
The air-oil separator (AOS) is a critical component in the Boxster’s engine, helping to manage oil vapors and prevent them from entering the intake system. Over time, the AOS can fail, leading to smoke from the exhaust, rough idling, or excessive oil consumption. If left unaddressed, a failed AOS can cause further engine issues by contaminating the intake system with oil. Symptoms of a failing AOS include blue smoke from the exhaust on startup, unusual engine behavior, or oil residue in the intake hoses. Replacing the AOS is a moderate-cost repair that can help prevent larger issues.
6. Suspension Wear and Tear
The Boxster’s suspension, designed for sporty handling, can experience wear, especially in vehicles driven aggressively or with high mileage. Common issues include worn-out control arm bushings, sway bar links, and strut mounts, which can lead to clunking noises, poor handling, or uneven tire wear. Suspension work can be costly, particularly if multiple components need replacement. When buying a used 2005 Boxster, it’s essential to check for any play or noise in the suspension, as repairs can add up quickly.
7. Electrical System Glitches
Electrical issues in the 2005 Boxster are generally minor but can still be annoying. Common complaints include problems with the climate control system, malfunctioning dashboard lights, and occasional issues with the central locking system. Some owners have reported battery drain issues, which can be linked to faulty wiring or failing electrical components. Checking the battery and ensuring that the alternator is in good working order can help avoid these issues. While not typically costly to repair, troubleshooting electrical problems can be time-consuming.
8. Exhaust System Corrosion
The 2005 Boxster’s exhaust system, particularly in vehicles driven in regions with salt-treated roads, can experience corrosion over time. The mufflers, exhaust clamps, and brackets are particularly vulnerable. Corrosion can cause the exhaust system to develop leaks, resulting in louder exhaust noise or even triggering check engine lights if the oxygen sensors are affected. Replacing the exhaust system can be costly, so inspecting the exhaust components for rust or wear is a good idea when considering a used Boxster.
Buying Tips: What to Look for in a 2005 Porsche Boxster
- Service History: Always ask for a complete service history. Key areas to look for include IMS bearing replacements, RMS repairs, and regular oil changes. A thorough service history provides insight into how well the car has been maintained.
- IMS Bearing Status: Verify whether the IMS bearing has been replaced or upgraded. If not, factor in the potential cost of a preventative replacement to avoid possible engine failure.
- Convertible Top Condition: Operate the convertible top and listen for any unusual noises. Inspect the top fabric for signs of wear or damage, as replacing or repairing it can be costly.
- Cooling System Inspection: Check the coolant reservoir and hoses for leaks. Look under the car for any signs of fluid leaks, and confirm that the car doesn’t overheat during a test drive.
- Suspension and Handling: Take the car for a test drive on varied roads. Listen for any clunks or rattles, especially over bumps, as these could indicate worn suspension components.
Cost of Ownership: Is the 2005 Porsche Boxster Expensive to Maintain?
While the Boxster is considered an entry-level Porsche, it still has maintenance costs typical of a high-performance sports car. Many owners are surprised by the upkeep costs, particularly if they encounter issues with the IMS bearing, convertible top, or suspension.
Maintenance and Repair Costs
Routine maintenance, such as oil changes and brake pad replacements, is manageable but generally more expensive than a typical car. However, significant repairs, such as IMS bearing replacement or convertible top repairs, can be quite costly. To help manage costs, some owners opt for independent Porsche specialists rather than dealership service, as they often charge less for labor.
Insurance and Fuel Costs
Insurance premiums for the Boxster are typically higher than average due to its status as a sports car. Fuel economy for the Boxster is decent for its class, but premium fuel is required, which can add up over time, especially for owners who drive frequently.
Depreciation and Resale Value
While early depreciation hit the Boxster hard, the 2005 Boxster is now appreciated as a modern classic, and its depreciation rate has slowed. Well-maintained models, especially those with documented IMS bearing replacements, tend to hold value well in the used car market.
Conclusion
The 2005 Porsche Boxster is a rewarding car for enthusiasts who want a taste of Porsche performance without the expense of a 911. However, common issues like the IMS bearing, oil leaks, and convertible top mechanisms mean that prospective buyers should approach with caution and ensure that these problem areas are addressed or factored into the purchase cost. By understanding these common problems and knowing what to look for, you’ll be better prepared to enjoy the thrill of owning a Boxster without unexpected surprises.