What breaks most · 1990 to 2015 model years
Porsche 911 problems by year
Owners have filed 77 safety complaints with NHTSA about the Porsche 911 across model years 1990 to 2015. Three years stand out: 1995 for electrical system complaints, 2002 for engine complaints and 1999 for seat belts complaints. The quietest years are 1990, 1992 and 2012.
- Years to check closely: 1995, 2002, 1999
- Fewest complaints: 1990, 1992, 2012
- Complaints on file
- 771990 to 2015, all trims
- Worst year
- 199512 complaints
- Crashes reported
- 54 fires · 4 injuries · 0 deaths
- Typical failure mileage
- 33kMedian where owners gave mileage
- Recall campaigns
- 17Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 1 | 0 | 4 | Body and structure (1) | |
| 1 | 1 | 4 | Body and structure (1) | |
| 12 | 1 | 0 | Electrical system (5) | |
| 6 | 0 | 3 | Air bags (2) | |
| 2 | 0 | 1 | Speed control and throttle (1) | |
| 2 | 0 | 1 | Exterior lighting (2) | |
| 8 | 0 | 1 | Seat belts (3) | |
| 4 | 0 | 1 | Engine and cooling (3) | |
| 8 | 2 | 0 | Engine (5) | |
| 9 | 0 | 0 | Engine (6) | |
| 7 | 0 | 0 | Engine and cooling (3) | |
| 7 | 1 | 0 | Engine (5) | |
| 3 | 0 | 0 | Engine (3) | |
| 1 | 0 | 0 | Engine (1) | |
| 2 | 0 | 0 | Wipers and visibility (1) | |
| 1 | 0 | 1 | Body and structure (1) | |
| 3 | 0 | 1 | Electrical system (1) |
What fails on the 1995 Porsche 911
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Electrical systemAlternators, starters and ignition | 42% |
5 | 0 | Shop electrical system parts for the 1995 Porsche 911 |
| Engine and coolingRadiators, thermostats and cooling | 17% |
2 | 0 | Shop all engine and cooling parts, not filtered to this vehicle |
| Brakes (hydraulic)Brake pads, rotors and calipers | 17% |
2 | 0 | Shop brakes (hydraulic) parts for the 1995 Porsche 911 |
| Wheels | 8% |
1 | 0 | — |
| SuspensionStruts, springs and control arms | 8% |
1 | 1 | Shop suspension parts for the 1995 Porsche 911 |
| SteeringPower steering pumps, racks and hoses | 8% |
1 | 0 | Shop all steering parts, not filtered to this vehicle |
| Equipment and infotainment | 8% |
1 | 0 | — |
| Air bags | 8% |
1 | 0 | Check recalls for air bags on NHTSA.gov |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
Battery died, upon recharge, car was attempted to be started and we smelled a burning smell. It turned out that the wiring harness caught on fire, resulting in need to replace the wiring harness and air cond controller at the cost of 3600. *ak
-
I noticed steam coming from the engine bay while driving in a residential area. Stopped the car immediately and contacted a tow service. A coolant line came loose due to a failed fitting at the manifold and discharged the entire reservoir, leaving a puddle of coolant underneath the vehicle.
-
Consumer states: vehicle doors unlock and windows roll down automatically without being touched. The vehicle does this whether keys are in the ignition or not. Dealer installed new drivers door key switch assembly at the consumers expense. *tt
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 30, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Porsche 911 years have the most problems?
By NHTSA complaint volume, 1995, 2002, 1999 carry the most filings on the Porsche 911. The 1995 alone has 12 complaints, led by electrical system.
What is the most common Porsche 911 problem?
On the 1995 model year, the most-reported component is electrical system with 5 complaints. The table above lists the top components for every year.
At what mileage do Porsche 911 problems start?
The median mileage at failure across all Porsche 911 complaints that include mileage is about 33,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.