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Porsche 911 vs. Porsche Cayman Reliability Comparisons

You won't find Porsche 911 or Porsche Cayman reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the Porsche 911 and the Porsche Cayman truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Porsche 911 and Porsche Cayman reliability as the cars age. Others tell you how reliable the Porsche 911 and the Porsche Cayman were a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Porsche 911 and the Porsche Cayman have been recently.

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See reliability results for all Hatchbacks, Coupes, and Convertibles.

See only powertrain and chassis results

Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2014 Porsche Cayman 33 Caymans, 6.1 months of data per Cayman, average 5000 miles

Like other sports cars, low average odometer reading.
18
20% Fewest Trips Most Trips
see reported repairs

 

2009 Porsche 911   15 911s, 9.5 months of data per 911, average 27700 miles

* Small sample size.
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or 15 911s, 9.5 months of data per 911, average 27700 miles

* Small sample size.
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2008 Porsche Cayman 37 Caymans, 9.8 months of data per Cayman, average 34200 miles

Like other sports cars, low average odometer reading.
30
10% Fewest Trips Most Trips
see reported repairs

 

2007 Porsche 911 29 911s, 7.9 months of data per 911, average 45500 miles

Like other sports cars, low average odometer reading.
52
30% Fewest Trips Most Trips
see reported repairs
2007 Porsche Cayman 41 Caymans, 8.9 months of data per Cayman, average 42700 miles

Like other sports cars, low average odometer reading.
33
10% Fewest Trips Most Trips
see reported repairs

 

2006 Porsche 911   12 911s, 9.3 months of data per 911, average 33600 miles

* Very small sample size.
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or 12 911s, 9.3 months of data per 911, average 33600 miles

* Very small sample size.
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2006 Porsche Cayman 38 Caymans, 10.0 months of data per Cayman, average 53900 miles

Like other sports cars, low average odometer reading.
44
20% Fewest Trips Most Trips
see reported repairs

 

2003 Porsche 911   13 911s, 7.2 months of data per 911, average 57300 miles

* Very small sample size.
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or 13 911s, 7.2 months of data per 911, average 57300 miles

* Very small sample size.
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2002 Porsche 911 29 911s, 8.9 months of data per 911, average 64600 miles

Like other sports cars, low average odometer reading.
51
0% Fewest Trips Most Trips
see reported repairs

 

2001 Porsche 911   11 911s, 10.2 months of data per 911, average 59900 miles

* Very small sample size.
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or 11 911s, 10.2 months of data per 911, average 59900 miles

* Very small sample size.
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1999 Porsche 911   12 911s, 8.6 months of data per 911, average 68900 miles

* Very small sample size.
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What People Are Saying about Reliability and the Porsche 911

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What Our Members Are Saying about the Reliability and Durability of the Porsche 911

Porsche 911 Reliability and Durability: Pros
YearBody/PowertrainComment
2002 2dr Coupe turbocharged 415hp 3.6L H6
6-speed manual AWD
Porsches are built to last, this car just feels solid - the interior especially
2001 2dr Coupe turbocharged 415hp 3.6L H6
5-speed shiftable automatic AWD
only fixed a gearbox undertray gasket, sway bar end links and regular service over 2.5 yrs.
 

What Our Members Are Saying about the Reliability and Durability of the Porsche Cayman

Porsche Cayman Reliability and Durability: Pros
YearBody/PowertrainComment
2011 0 Historically, sports cars were amongst the most unreliable of all vehicles. While early Caymans would occassionally suffer catastrophic engine problems, it was otherwise remarkably dependable. Since the problem was fixed in model year 2009, the car has been relatively rock solid.
2008 2dr Hatch 295-horsepower 3.4L H6
6-speed manual RWD
The car has been bullet proof. Some say these cars are expensive to maintain and while iut costs more than a Honda Civic I've averaged less than 500 a year for maintenance and other than a flat tire I've never had to bring the car in unexpectedl
2007 2dr Hatch 295-horsepower 3.4L H6
6-speed manual RWD
So far only routine maintenance has been required. Absolutely no issues at all after 15,000 miles.
Porsche Cayman Reliability and Durability: Cons
YearBody/PowertrainComment
2007 2dr Hatch 295-horsepower 3.4L H6
6-speed manual RWD
Unlike older 911s, this car, and its contemporaries, is built to a price point and some things are cheapened. A notorious example is the IMS, which synchronizes the cylinder banks and valves. The bearing it rides on can fail which can take the whole engine out. I don't know whether these engines will have the potential to reach 250k miles, like the old air-cooled engines.