Credov's researched list of the 2 faults the Porsche 911 Targa (997.1) is known for (2005–2008), 2 of them serious or costly. Each one says what to look for when you check the car, so you can spot it before you buy. Not every car has these faults: they are the ones worth checking on this model.
What to look for: Listen at idle from the rear of the engine for a grinding or rattling noise that changes with revs.
Why it matters: An IMS bearing failure loses cam timing and typically destroys the engine, which on this generation means a rebuild or replacement costing many thousands of dollars. Because failure can happen with little or no warning, checking for retrofit history and listening for early noise is the only way to catch it before it happens.
What to look for: Look in both tailpipes for a heavy black, oily soot deposit on one side only, and listen for a tick at idle.
Why it matters: Bore scoring is one of the most common and expensive failures on this generation, and the only real fix is a full engine rebuild with new cylinder liners - a job that can cost tens of thousands of dollars. Catching the early signs (the tailpipe soot and the tick) before buying avoids inheriting that bill.
Got a question about a Porsche 911 Targa (997.1)? Ask Credov: a noise, a warning light, a part or how to fix it.
On top of the faults above, every Credov inspection covers the basics: fuel smell, leaks or filler rust, engine oil leaks, power steering fluid leak, drive belt cracks or squeal, rust underneath: chassis and mounts, engine mounts, engine oil level and colour, coolant level, colour and leaks, head gasket failure signs, cold start: rattle, knock or smoke, rough or hunting idle, engine running hot on gauge, gearbox or diff oil leak, swapped gearbox without lvv and more.
Researched by Credov from manufacturer recalls and service bulletins, owner reports and workshop sources. Repair prices are typical ranges, not quotes. See also fault codes and repair costs.