We don't have a lot of complaints on file for the Porsche 911 (although feel free to add yours here) -- probably because it's so old, no one bothers to post complaints anymore.
The 1983 Porsche 911 has the most complaints, & the most-reported problem is also with the 1983 911 for broken head bolts.
Worst Reported Problems with the 911
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Latest Owner Complaints About the 911
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broken head bolts -- 1983 911:
My husband worked with a certified Porsche mechanic to re-build the engine. Otherwise, this would have cost us around $12,000 to fix. Read more »
This problem has been reported 1 times by other 1983 911 owners.