What Year Porsche 911 to Avoid and Why? (Explained)

Porsche 911 is one of the most famous and influential sports cars, which began its journey in 1963 and still serving the industry with some remarkable models.

However, being most famous and influential cannot ensure a 100% reliability guarantee of any vehicle, and users reported some significant engine troubles as well as some other minor issues with 1983, 2009, and a few more Porsche 911 models.

Keep reading the following article to discover more about those troublesome Porsche 911 models and decide whether to consider them or not-

Porsche 911 Years To Avoid (List of Years)

It has been 57 years since the first model of Porsche 911 was publicly introduced in 1964. Throughout this long journey, the Porsche 911 went through several notable redesigning, modifications, and upgrades to meet the standard of being one of the most desirable sports car series.

However, not all the Porsche 911 models are entirely flawless, and some models are known for being problematic due to engine and other issues.

Thus, if you are looking for new or used Porsche 911 models, avoid the following years:

  • 1983 Porsche 911
  • 2001 Porsche 911
  • 2002 Porsche 911
  • 2004 Porsche 911
  • 2005 Porsche 911
  • 2006 Porsche 911
  • 2009 Porsche 911
  • 2011 Porsche 911
  • 2012 Porsche 911
  • 2014 Porsche 911
  • 2020 Porsche 911

Porsche 911 got an overall rating of 3.5 out of 5.0 on Porsche 911 Reliability | RepairPal, which indicates the decent reliability of most Porsche cars.

But, another undeniable fact is that some models do not fall in that reliable category due to faulty or broken head bolts, radiator leaks, and coolant hose slip issues.

What Makes These Porsche 911 Years Worth Avoiding?

Many owners have expressed their dissatisfaction with particular model years after filing many complaints about them. As a result, these years have been placed on the avoid list. Now, let us look more closely at the Porsche 911 years-

1983 Porsche 911 Problems:

Users seemed to have just one significant issue, and based on the Carcomplaints.com report, it was the engine trouble caused due to broken head bolts.

Consumers reported noticing the issue as soon as the vehicle reached 32,000 miles, and had to spend $1,500 repairing it.

In the worst case, one might have to rebuild or replace the entire engine, and rebuilding from Porsche authorized dealership or mechanic might cost approx. $12,000.

2001 Porsche 911 Problems:

This year’s Porsche 911 users also reported engine trouble, and the reason behind such occurrence was the blown or cracked gasket head.

This issue mostly gets noticed at 65,550 miles, and the only solution is replacing the engine, which might cost approx. $15,000.

One 2001 owner also mentioned that the side airbag failed to deploy, and because of that, his vehicle was severely damaged. Also, the driver had to experience severe head trauma.

2002 Porsche 911 Problems:

This year’s Porsche 911 users reported 2002 vehicle seatbelt trouble. Also, users claimed to notice broken seatbelts at around 30,000 miles and required approx. $400 to fix.

The 2002 users also mentioned experiencing troubles like aluminum coolant tube blowing apart, steam or smoke coming from the engine bay, loose coolant line, faulty or failed manifold fitting, or bad Odor.

2004 Porsche 911 Problems:

Engine failure was the only complaint highlighted against this year’s Porsche 911 models, which most commonly occurs at 41,000 miles.

One 2004 Porsche 911 user even mentioned that he noticed symptoms like the engine won’t or failed to start after shutting off abruptly.

Reportedly, this kind of engine failure might cost one to spend $11,000-35,000 based on the engine condition to rebuild.

2005 Porsche 911 Problems:

This year’s model users again complained about the vehicle’s engine problem due to scored bores.

Reportedly, the dreaded bore scoring eventually causes severe damage to the vehicle engine or complete engine failure, which commonly arises at 72,000 miles and the only solution is to replace the entire vehicle engine.

2006 Porsche 911 Problems:

This year’s model users only mentioned that the vehicle engine tends to stop working due to loosening IMS shaft bearing or defaulted engine.

The 2006 Porsche 911 users commonly encountered this problem at 64,000 miles, and the ultimate solution was replacing the engine.

2009 Porsche 911 Problems:

This year’s Porsche 911 users highlighted engine, coolant system, and window or windshield concerns.

The 2009 model users mainly mentioned excess oil consumption, engine stalling, coolant hoses leaking, and window operation malfunctioning.

Users also mentioned that these issues mostly occur at 25,000 to 28,800 miles.

2011 Porsche 911 Problems:

This year’s vehicle users only complained about one particular electrical issue- premature battery failure.

It commonly occurred at just 4,350 miles of operation, and users even claimed that 2011 Porsche batteries don’t even last for the whole year.

2012 Porsche 911 Problems:

This year’s Porsche users had to encounter power window malfunctioning, where they noticed that sometimes the power window won’t respond accordingly or stopped working completely.

One particular 2012 model owner claimed that he noticed a faulty rear window just after receiving his newly purchased car, which is frustrating.

2014 Porsche 911 Problems:

This year’s vehicle owners have reported cooling system problems, where they noticed radiator leak and coolant hose slipping issues.

Besides that, 2014 Porsche 911 models seemed to have structural body or paint defects and visibility or wiper defects. That’s why NHTSA recalled the affected models.

2020 Porsche 911 Problems:

This year’s Porsche 911 vehicles seemed to have an electrical problem, where several users noticed software issues. According to Carcomplaints.com, no other issue has not reported yet by the consumers.

What is the Worst Years Of Porsche 911?

Based on the PORSCHE 911 MODEL YEAR COMPARISON graphical presentation, these two years are the worst-

The 2009 Porsche 911

4 complaints were reported against this year’s vehicles by their users.

Also, the most highlighted complaints against 2009 models were engine stalling and excess oil consumption, which commonly arise at 25,000-28000 miles.

Users also commonly coolant hoses leaking issue, which mostly arise at 28,000 miles, and on average the typical fixing cost of this problem is $300.

The 2014 Porsche 911

This year’s Porche 911 models got 5 complaints, including One Recall issued by National Highway Traffic Safety Administration (NHTSA). Also, Porsche officially issued 220 TECHNICAL SERVICE BULLETINS (TSBS). 
The Most highlighted symptoms of 2014 models were radiator leaks and coolant hose slipping tendency.

What is the Most Common Problems Of Porsche 911?

Now, let’s learn more details about the most common Porsche 911 problems- 

1. Engine Problems:

This is the most common complaint against Porsche 911 models, and according to the Carcomplaints.com report, most reported complaints were against Porsche’s 1983, 2001, 2004-06, and 2009 released models.

Reports also claim that most engine troubles were initiated by broken head bolts, blown or cracked gasket head, scored bores, failed or loosed IMS shaft bearing, and defaulted engine.

If you can figure out the issue in the early stage of the engine damage, it might not cost you more than $1,500 to $2,000.

In most cases, due to the problem’s high severity rate, consumers had to either rebuild or replace the entire vehicle engine, which was not a cheap deal to handle.

2. Cooling System & Window Malfunctioning:

Besides engine problems or failures, the other most highlighted issues were the cooling system and window malfunctioning.

According to Carcomplaints.com reports, coolant system malfunction or failure was significantly visible in Porsche’s 2009 and 2014 models.

One particular owner even reported that after returning from a short trip, he noticed an enormous wet spot under the vehicle, and after investigating further, he found that the cooling fluid was entirely gone. He even claimed that all fluid drained away through the leaking hoses.

Also, power window malfunctioning or no response window opening or closing issues were visibly available in 2009 and 2012 Porsche models.

Reportedly, when the top is opened or closed, the vehicle window either stays open or close. Some users even claimed that both windows sometimes fail together, and they had to replace the whole set.

3. Electrical Issues:

Electrical issues were commonly available in Porche’s 2011 and 2020 models, where users noticed premature battery failure or software issues, which caused the engine and vehicle uncomfortable to run like usual.

Eventually, the engine completely shuts down while driving and never re-start again, even after several attempts. Ultimately, the engine either needs to rebuild or replaced with a new one.

Which Porsche 911 Years are Safe to Buy Used? 

Based on the PORSCHE 911 MODEL YEAR COMPARISON representation, the following Porsche 911 years are safe since there are no complaints reported against these models-

  • 2003 Porsche 911
  • 2008 Porsche 911
  • 2013 Porsche 911

The 2003 Porsche 911 four-seater coupe features a strengthened body structure, Turbo-like headlights, a wider rear-end panel above the restyled oval exhaust tailpipes, and is compatible with 3.4 liters to 3.6 liters engine for 300- 315 horsepower.

2008 Porsche 911 offers smooth performance, better handling control, excellent transmission operation, stability, and Maneuverability. This year’s Porsche 911 also got 4.8 consumer ratings out of 5.

The 2013 Porsche 911 is a four-seater rear-engine sports car that features an all-wheel-drive system, luxurious interior, improved driving position, flat-six engine, and seven-speed manual to deliver ultimate sporty performance.

Which Year’s Porsche 911 Have Most Engine-related Problems?

According to Carcomplaints.com, 1983 & 2009 models have the most engine-related issues reported by their consumers.

Which Year’s Porsche 911 Has Most Cooling system Problems?

According to Carcomplaints.com, 2009 & 2014 models have the most cooling system issues reported by the users.


It is undeniable that the list of problematic Porsche 911 years models is quite long, but if you are looking for a decent used sports car, no other option can beat the quality that some of the Porsche 911 models can serve.

Thus, avoid the years’ models that are marked as problematic and choose between the rest of the available options.

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