1999 Porsche 911 Engine Problems
- Complaints
- 2about this part
- Share
- 25%of 8 total for the year
- Median mileage
- 44,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 1999 Porsche 911, 25% of the 8 complaints for this model year. Where a mileage was given, the median is 44,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was driving on a 16 lane major highway in toronto in the express lanes at 70 MPH. Without warning the engine lost all power and stalled. The check engine light was flashing. It was difficult to stop safely since the power steering and power brakes were not functioning with the engine stopped. It would not restart and I was lucky to change lanes in heavy traffic and pull onto the hard shoulder of the road. I was stuck sitting in the express lanes by a guard rail until a tow truck came, which took an hour. …”
NHTSA complaint #10507046, filed 2013-04, 44,000 miles“Engine has seized due to intermediate shaft bearing failue (ims bearing failure), the engine is a 3.4 liter flat 6 cylinder engine with only 95,500 miles on it. There was no warning sign of an issue. Turned off car when I got home then when I turned it on the naext day it would not turn over to crank. I took it to a local mechanic shop to get it tested and was told I will have to replace entire engine which costs upwards of $13,000 because of an ims bearing failure.”
NHTSA complaint #11179953, filed 2019-02Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 33% |
| 2022 | 1 | 10% |
| 2020 | 3 | 60% |
| 2015 | 3 | 38% |
| 2013 | 1 | 17% |
| 2012 | 1 | 20% |
| 2004 | 6 | 75% |
| 2003 | 1 | 11% |
| 2002 | 6 | 67% |
| 2001 | 5 | 63% |
| 1999 | 2 | 25% |
Other parts of the 1999 Porsche 911
3 complaintsElectrical system
2 complaintsEngine cooling
2 complaintsAir bags
1 complaintsBrakes
1 complaintsSteering
1 complaints
← All problems reported for the 1999 Porsche 911
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology