Unfortunately, as good as these engines are, they do have their share of faults. This engine longevity was unheard of during the time period, especially for a high-performance car such as the 911. While these examples should be considered the exception rather than the rule, it is not unreasonable to expect the 3.0L or 3.2L motors to register 150,000 miles before needed a major rebuild. There are more than a few documented cases of SCs and Carreras with more than 200,000 miles on the odometer without the internals being touched. The 180-bhp 3.0L SC engine installed in 1978-83 models and the 207-bhp and later 217-bhp 3.2L powerplants for the 1984-89 Carrera are as bulletproof as any 911 engine ever offered by Stuttgart.
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