2003 Porsche 911 problems
The Porsche 911 (pronounced Nine Eleven or in German: Neunelf) is a two-door 2+2 high performance rear-engined sports car introduced in September 1964 by Porsche AG of Stuttgart, Germany. It has a rear-mounted flat-six engine and originally a torsion bar suspension. The car has been continuously enhanced through the years but the basic concept has remained unchanged. The engines were air-cooled until the introduction of the 996 series in 1998.
The 911 has been raced extensively by private and factory teams, in a variety of classes. It is among the most successful competition cars. In the mid-1970s, the naturally aspirated 911 Carrera RSR won world championship races including Targa Florio and the 24 Hours of Daytona. The 911-derived 935 turbo also won the 24 Hours of Le Mans in 1979. Porsche won the World Championship for Makes in 1976, 1977, 1978, and 1979 with 911-derived models.
In a 1999 poll to determine the Car of the Century, the 911 was fifth. It is one of two in the top five that had remained continuously in production (the original Beetle remained in production until 2003). The one millionth example was manufactured in May 2017 and is in the company's permanent collection.
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Common 2003 Porsche 911 problems
The Porsche 911, particularly the 2003 model, is known for several common problems that owners have reported over the years. Here are some of the most frequent issues and their likely resolutions:
- Ignition Coils Failure: The ignition coils on the M96 and M97 engines of the Porsche 911 are susceptible to failure, which can lead to worn spark plugs, cracks in ignition coils, and oil leaking past the spark plug tube seals. These issues can cause the check engine light to illuminate and may require replacement of the ignition coils or spark plugs.
- Interior Electrical Misbehavior: Some 911 models, particularly those with cabriolet tops, may exhibit strange and seemingly random electrical misbehavior of interior systems, such as interior lights staying on, airbag faults, or seat malfunctions. This problem can often be traced back to a single control module located under the driver's seat, which can become water damaged due to its proximity to the driver door and window.
- Ignition Switch Failure: The ignition switch in older 911 models, including the 2003 model, can fail, causing the key to become stuck in the ignition or preventing the car from starting. This issue is typically caused by a failure in the ignition switch mechanism and can be resolved by replacing the electrical or mechanical portion of the switch.
- Rear Spoiler Malfunction: The rear spoiler on the Porsche 911, which raises and lowers based on speed, can malfunction, leading to a lopsided spoiler or a "failure spoiler control" warning on the dashboard. This issue can be expensive to fix, as it may require replacing the slave cylinder or other components of the spoiler control system.
It's important to note that these issues are not exclusive to the 2003 model and can be found in other model years as well. Regular maintenance, inspections, and timely repairs can help prevent these problems or minimize their impact.
Is a Porsche 911 expensive to maintain?
Yes, Porsches are expensive to maintain compared to most automakers' vehicles. Estimates from RepairPal show maintaining a Porsche costs an average of about 83% more than the industry average.
Are old Porsche 911 reliable?
Spare parts are still easy to find but expensive when purchased from dealers. Properly maintained, early 911s can be reliable daily drivers that are bound to turn more heads than their modern counterparts, particularly in loud period colors.
What years did Porsche have engine problems?
The Porsche IMS bearing problem years are from 1997 to 2005, with the M96 or M97 engine in these models being particularly susceptible. The single-row bearing used from model year 2000 through 2005 is of the greatest concern. However, any IMS bearing can and will fail if not replaced as part of regular maintenance.
Is Porsche 911 good for daily use?
Space is probably one of the biggest reasons people think the 911 can't be a daily driver. This is a valid concern but for most people, there is enough space for everyday driving. The Porsche 911 is a four-seater, but most 911 drivers agree that the rear seats are best suited for your coat or bag.
2003 Porsche 911 complaints
The NHTSA has received 0 complaints about various vehicle components related to the 2003 Porsche 911.
You can leave your car complaint via the special form below.
Negative 2003 Porsche 911 car reviews
Positive 2003 Porsche 911 car reviews
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Crisp handling and awesome acceleration make this car a dream to drive. It's a must-have before you leave this world, as you never know what adventures lie ahead.
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With the x-50 horsepower package, this car boasts 450 hp, providing all the performance and high-end torque you could ever need, unless you're an F-1 driver. The car is incredibly practical for everyday use. However, there were some issues with rattles and a mechanical failure at 4,000 miles, which left a bit of a bad taste. Maybe a Ferrari will be the better choice next time?
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This is my first Porsche. I spent part of my childhood in Stuttgart as an army brat and always dreamed of owning one of those cars! The day finally arrived and it was well worth the wait. The performance is awesome, limited only by the driving abilities of the driver. I now have total closure with the old adage of 'Porsche, there is no substitute.' It's an excellent vehicle for the true driving enthusiast who has lots of loot to lay out for this worthy babe!
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I really love it! It's awesome and beautiful!
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This car is more luxurious than any of my other 911 Porsches that I have owned. Although it doesn't have the same ferocious acceleration as my 1998 C2S or my 1993 RS 911, it offers a more forgiving ride and is more comfortable around town. The full leather interior option adds to the car's superior and formal feel, and it looks and smells great. I also have the aero kit, which gives the car a fantastic look.
Additional sources
More sources of information about 2003 Porsche 911 problems:
Here's Why the Best Porsche 911 is the Hated "996" Model - YouTube
May 30, 2017 ... CHECK OUT CARS & BIDS http://carsandbids.com Most Porsche "purists" hate the 996 model Porsche 911. But they're wrong -- it's actually the ...
2003 Porsche 911 Problems and Complaints - 18 Issues
Top 2003 Porsche 911 Problems · Various Faults Due to Intenal Leak at the Oil Seperator · Persistent Coolant Loss Due to Small Leak at Coolant Reservoir · Rear ...
The Porsche 996 Has Major Problems As I Found Out - YouTube
Jul 2, 2023 ... ... 911 and we found some issues as well as the well documented problems known to this generation. Be sure to check if you are thinking about ...
Should I get a manual 2003 Porsche 911 Carrera with 75,000 miles ...
Jul 10, 2023 ... 911s are surprisingly reliable as long as you do the maintenance (and that it's been done correctly in the past). Budget for unforeseen issues.
Porsche 996 Turbo Top 5 Issues | Buyers Guide - YouTube
Jul 26, 2017 ... Porsche 911 Turbo 996 Top 5 Issues | Buyers Guide Top 5 problems buyers should look for when looking to purchase a 2001-2004 Porsche 996 ...
Other years of Porsche 911
Are you having problems with your 2003 Porsche 911?
Woodrow Swift 2025-04-09
In terms of reliability, the car has unfortunately been quite disappointing. I had to spend close to $500 to fix a burned out xenon bulb, and there have been several other issues such as a failed rear main seal (which I have since found out is a universal problem in 996s and 911s built from 1998-2008), a failed sport exhaust cutout, and failed radiators (there are two of them). Additionally, the shifter has become increasingly stiff and notchy, and there is fractured dash trim due to age. However, I must say that the warranty has been honored reasonably well. At times, the noise and ride can be intolerable. Compared to a Boxster or Miata, the car is totally lacking in balanced handling, which can be especially dangerous in very high speed curves when camber and rear weight bias can combine to give it Corvair (or original VW Beetle) characteristics.
Sid Herman 2025-03-07
Let's put aside any preconceived notions about Porsches and German engineering. It's worth noting that with the 996 and the Boxster (water-cooled Porsches for over a decade until 2009), Porsche built and sold a car that had a self-destructive intermediate shaft bearing. This defect could easily and without visible warning destroy the engine on any car, and unfortunately, Porsche has not issued a recall to correct the design flaw. Additionally, they have not recalled the more common leaky main bearing seal. It's disappointing to see this, especially considering that the 996 has the highest gross profit margin of any automobile ever in production. However, it's important to note that the 996 is still a thrilling car to drive.
Ralph Sanford 2025-03-02
Although I have never owned a Porsche before, I have had a negative experience with this particular model. The engineering and materials used in this car are subpar, resulting in various issues such as cup holder and floor mat holder breakages, brake system overhauls, and failing rear window regulators. Additionally, the radiator and hose design is poor, and the interior is made of cheap plastic parts that easily break. Even the headlight covers have turned yellow and cannot be fixed. While I appreciate the car's design and the ability to take my child in the jump seat, the lack of aftermarket parts and the overall cheap design make it difficult to justify keeping the car. In my opinion, other options such as a Vette, Z, or Miata would be a better investment.
Gabriel Mante 2024-10-27
Hi there! As a car collector, I have high standards and unfortunately, this car doesn't quite meet them. I find it uncomfortable and the cockpit is a bit confusing, with some things being hard to reach. Is there anything that can be done to improve these issues?
Colten Stracke 2024-08-25
I appreciate your interest in Porsche NA, however, I would like to suggest considering the Infiniti G35 as a more cost-effective option. Alternatively, if you prefer Italian craftsmanship, there are some great options available as well.