Worst Complaints About the Porsche 911

911 owners are having the most trouble with the engine (50%), cooling system (21%), and the windows (14%). We've listed the most common owner complaints below. The full list is available on CarComplaints.com.

  1. Broken Head Bolts 1 complaints at an average of 32,000 miles in the 1983 Porsche 911.
  2. Radiator Leak 1 complaints at an average of 250 miles in the 2014 Porsche 911.
  3. Coolant Hose Slip 1 complaints at an average of 636 miles in the 2014 Porsche 911.

What's Wrong with the 911?

Watch out for the 1st generation's (1969–1983) 1.15 PainRank™, which is the worst of 6 generations.

The most common 911 problems