Porsche Boxster reliability -- let's get better info

[mkaresh]

We have updated reliability stats for the Boxster and Cayman that include owner experiences through September 30, 2010. Other sources of car reliability information won't cover the months since April until the summer or even fall of next year.

Repair frequencies, in terms of repair trips per 100 cars per year:

2008: 59, about average

2007: 61, about average, small sample size

2006: 53, better than average

2005: 45, better than average

2004: 71, about average, small sample size

2003: 55, better than average

2002: 92, about average

2001: 98, better than average

2000: 69, better than average

1999: 156, worse than average, small sample size

Important note: these cars are only driven an average of 5,500 miles a year, about half as much as the average car. No adjustment has been made for this.

I'd like to report specifically on the IMS failure rate, but we will need more participants to do this. A few more failures have been reported recently, but still about two to three per 100 cars in the past year.

Thank you, once again, to everyone who has been helping. We'll have further updates, possibly including additional model years depending on the number of participants, in February and May.

To see how competitors compare, and to sign up to help:

truedelta.com/car-reliability.php?stage=pt&bd=Porsche&mc=239

[J'sboxie]

My 1998my boxie has not had one issue since I bought the car over 6 months ago...it is my dd and I have had nothing but fun!!!I have replaced tires and coolant cap(which I still add a small bit of coolant every 3 weeks) but other than that...no probs...oh..my mileage is 92,xxx and is a strong tip!!!

Now I know that is not a long time to own a car, but as I keep her "fresh" I can't see anything that bad! And if I have a problem, then I know that I can get help on this wonderful site. Oh wait...I do have one issue...The lever for the trunks does not unlock anymore...but that's okay...I use the small screwdriver method,lol

[mkaresh]

We have some new pages that display all reported repairs by problem area:

truedelta.com/car-problem-descriptions.php?stage=pt&bd=Porsche&mc=239&my=2002&gc=

From this page it's possible to select a different model year or specify a problem area.

[mkaresh]

We have updated reliability stats for the Boxster and Cayman that include owner experiences through December 31, 2010.

Repair frequencies, in terms of repair trips per 100 cars per year:

2008: 39, better than average

2007: 59, about average

2006: 49, better than average

2005: 54, better than average

2004: 88, about average, small sample size

2003: 58, better than average

2002: 124, about average

2001: 104, about average

2000: 90, better than average

1999: 106, about average, small sample size

Important note: these cars are only driven an average of 5,500 miles a year, about half as much as the average car. No adjustment has been made for this.

Six IMS failures were reported for the 2010 calendar year, most of them for 2004-2005 model year cars (with the 2005 being a 987 rather than a 986). Some of these failures might have occurred before the car was enrolled, in which case they would not be included in the above stats. So this count might err on the high side. The total sample size for 1999-2005 is 220 cars. No IMS failures have been reported for cars 2006 and newer.

Thank you, once again, to everyone who has been helping. We'll have further updates, possibly including additional model years depending on the number of participants, in May and August.

To see how competitors compare, and to sign up to help improve this information:

Porsche Boxster reliability ratings and comparisons

[jakekit]

Very cool data collection! I entered my newly acquired 2002. All the little things I'm doing to baseline are probably skewing things a little bit.

Very interested to see how the trends continue.

[stateofidleness]

just curious, but is there any validation of the data being submitted? maybe VIN number requirement of person submitting the claims?

Garbage in, garbage out! What can I say, I'm an analyst.

[mkaresh]

The problem with such validation is that hardly anyone would go through the effort to provide a VIN. The quality of the resulting information would be harmed far more through reduced sample sizes than helped by making it harder for people to report on cars that don't actually exist. Especially since there's never been any evidence of the latter.

The big problem is getting people to report on the cars they do have, not keeping them from reporting on cars they don't actually have.

[lifeisgood]

Originally Posted by stateofidleness

just curious, but is there any validation of the data being submitted? maybe VIN number requirement of person submitting the claims?

Garbage in, garbage out! What can I say, I'm an analyst.

Ditto. Incase of exhange in ownership.