Porsche 911 (997)
2007–2010
Data Availability
Milemark has classified only 8 NHTSA complaints for the 2007–2010 Porsche 911 (997). This extremely limited dataset cannot support broad reliability conclusions. The low complaint count likely reflects the 911's limited production volume and owner demographics rather than exceptional reliability. What follows is what we can document from government records.
What We Know From Recalls
No recalls are on record for this generation 911, which is notable for a performance vehicle but does not guarantee freedom from defects.
Technical Service Bulletins
Porsche issued 390 TSBs for this model — an unusually high count that suggests frequent running changes and known issues. Without detailed TSB content, we cannot identify specific failure patterns, but this volume warrants scrutiny during pre-purchase research.
Owner Watch-Outs
Five of eight complaints involve cooling system issues (median 33,750 miles), but this sample is too small to call it a pattern. One owner reported engine-internal failure at 300,085 miles.
How to Research Further
Given limited complaint data, a pre-purchase inspection by a Porsche specialist is essential. Check model-specific forums (Rennlist, Planet-9) for owner-documented issues, and obtain a full VIN history to verify service records and any open TSB work.
Trends
Complaint trends by era
← All yearsClick a window below to see complaint data scoped to just those years.
Year-over-year complaint volume
Complaints filed per individual model year, not blended into 5-year bands like the chart above — hover a bar for exact numbers. Recent model years show fewer complaints mainly because they've been on the road less time.
5-year windows, not manufacturer generations — this database doesn't have reliable platform/redesign data to draw real generation boundaries from. Recent model years show fewer complaints mainly because they have been on the road less time, not necessarily because they're more reliable — read this as complaint volume and mix by era, not a reliability trend.
What breaks, and when
Median onset: 33,750 miles.
Typically $230–$3,010 to fix a engine repair, nationally.
Onset mileage not consistently reported.
Typically $230–$3,010 to fix a engine repair, nationally.
Median onset: 16,515 miles.
Tends to show up earlier than this model's other issues. · Typically $330–$4,240 to fix a drivetrain repair, nationally.
Median onset: 300,085 miles.
Tends to show up later than this model's other issues. · Typically $230–$3,010 to fix a engine repair, nationally.
From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see methodology. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.
See the full repair-cost breakdown →Sources: NHTSA Office of Defects Investigation — complaints, recalls, investigations, service bulletins. Methodology. This is not an inspection and not a recommendation to buy or avoid this vehicle.