Best year boxster?

[tanque55]

After Reading all the posts about bearing failures is there a year or years that were the worst or best for the dreaded IMS? Also does anyone know what percentage of engines suffered failure per year or model number?

[Johnny Danger]

2000 S with dual row IMSB !

[Nimbus117]

Here are the latest figures from the Boxa.net survey:

Total cars covered: 196
Total IMS failures: 13
%age IMS failure: 6.6%

Engine Cars in Study Incidents of failure Failure percentage
986 2.7: 37 4 10.8%
986 3.2: 78 7 9.0%
986 2.5: 23 1 4.3%
987 3.2: 29 1 3.4%
987 2.7: 22 0 NIL
987 3.4: 7 0 NIL

Youngest car with a reported failure, 2005. Clear that the 986 2.7's and 3.2's are by far and away the highest risk with 987's low risk (only 1 reported failure and that in an early 987 S).

[LAP1DOUG]

The data seems to indicate the double row bearing and larger single row bearing designs have similar failure rates.