There are a few reports of faulty sensors and switches on the roof mechanism, resulting in the roof not working properly and a few 2013 models suffered from corrosion in the rear left wheel housing however, this was sorted under warranty and the roof issues are an easy fix.
Inside, there are some reports of failed condensers in the air conditioning unit which causes the gas to leak out faster than usual.
Some owners have complained that an incorrect “Electric Parking Brake fault” message will appear on the dash display even when there is no issue.
Also, some early 981’s had issues with the infotainment display glitching out of failing completely however, all these should have been resolved under warranty.
Mechanically the overall reliability of the engines is good with no one serious problem causing common catastrophic failures.
The 2.7-litre and 3.4-litre units do not suffer from the IMS (intermediate shaft) bearing issues seen in previous generations that have caused engine failures.
They do suffer from some oil leaks & coolant leaks like all modern high performance European cars, however no worse than the others.
Transmission wise, the manuals are tough with the clutch being the most common problem. That can often be attributed to operator technique and the PDK transmissions are….okay.
They are not as reliable as the manual though and occasionally there can be internal position sensor glitches, hydraulic complications, dual mass flywheel and clutch failures.
Typically though, all PDK issues are expensive to fix. Some owners only complain about harsh shifting and shuddering, which in most cases can be improved by servicing or software updates.
Servicing and repair costs are significantly more expensive than most other cars and not just because parts are more expensive it’s also because everything is hard to access.
For example, you don’t just lift the bonnet and there is everything you need. There are complicated roof service position procedures so you can then remove the carpet & trim. This allows you to unbolt the cover to access the top of the engine. However, if you need to change an alternator or belt tensioner, there’s also a separate front engine cover. Even then, if you want to access the air filters you’ll need to remove all of the carpet and covers from within the rear boot. Overall, packaging can result in long labour times which will therefore, cost money.
Also the brakes do wear quickly, especially if you drive the Boxster in the way it was designed to be driven and suspension components, like lower control arm bushes for example, will all need replacing every 40,000kms to 60,000kms.
If you hear a terrible squeaky rubbing sound coming from under the front of the car somewhere and you can’t find where its coming from, have your mechanic check the foam insulation on the top of the fuel tank.