The Good
The 1999 Porsche 911 offers exceptional performance with its flat-six engine and precise handling, appealing to emotional buyers seeking driving thrills. Its relatively comfortable and refined cabin allows for practical daily use. The iconic 911 design, even with the 996's distinctive headlights, maintains strong brand appeal. Despite known issues, overall reliability with proper maintenance is good, and current market value presents a compelling entry into Porsche ownership.
The Bad
Potential buyers of the 1999 Porsche 911 must be aware of several known weaknesses. The most critical include the Intermediate Shaft (IMS) bearing failure, Rear Main Seal (RMS) oil leaks, and bore scoring in the 3.4L engine. Other concerns involve cooling system component degradation and interior trim issues, requiring careful pre-purchase inspection.
1999 Porsche 911: Quick Overview
- Engine Options: For the 1999 model year, the primary engine was a 3.4-liter naturally aspirated flat-six (M96.01).
- Horsepower: This engine produced 300 horsepower (221 kW) at 6,800 rpm.
- Torque: Peak torque was 258 lb-ft (350 Nm) at 4,600 rpm.
- Fuel Economy (EPA estimates):
- Manual Transmission: Approximately 17 MPG city / 25 MPG highway (combined 20 MPG).
- Tiptronic S Automatic Transmission: Approximately 17 MPG city / 24 MPG highway (combined 19 MPG).
- 0-60 MPH Times:
- Carrera (Manual): Approximately 5.0-5.2 seconds.
- Carrera (Tiptronic S): Approximately 5.5-5.7 seconds.
- Top Speed: Approximately 174 mph (280 km/h).
- Towing Capacity: Not applicable. The Porsche 911 is not designed or rated for towing.
- Transmission Options: Available with either a 6-speed manual gearbox or a 5-speed Tiptronic S automatic transmission with manual shift capability.
- Trim-Level Features (Carrera and Carrera 4):
- Standard Features: Leather-wrapped steering wheel, power windows and mirrors, automatic climate control, central locking, anti-lock braking system (ABS), dual front airbags, and the Porsche Side Impact Protection System (POSIP).
- Carrera (Rear-Wheel Drive): Emphasized a purist driving experience.
- Carrera 4 (All-Wheel Drive): Featured a permanent all-wheel-drive system (5-40% front axle torque distribution), a wider rear body and larger tires compared to the RWD Carrera, and Porsche Stability Management (PSM) often came as standard or a readily available option, providing enhanced traction and stability.
- Optional Features: Full leather interior, power-adjustable seats, heated seats, CD changer, Bose audio system, sport suspension, various wheel designs, sunroof, cruise control, and an early, CD-ROM-based navigation system.
1999 Porsche 911 Specifications
Vehicle Information
| Year | 1999 |
| Make | Porsche |
| Model | 911 |
| Trim | - |
| Style | - |
| Type | Coupe |
| Category | Compact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | - |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 3.4 L 6-Cyl. |
| Engine Size | 3.4L |
| Engine Cylinders | 6 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | Rear-Wheel Drive All-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
Vehicle History Report
Specifications
History
Events
History Check
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Listings
Recalls
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Analysis
What Problems Does the 1999 Porsche 911 Have?
Another common issue is Rear Main Seal (RMS) oil leaks. While generally not catastrophic, it indicates an oil leak that can be costly to repair, often requiring transmission removal.
Bore Scoring is a serious concern, particularly in the 3.4-liter M96 engine, leading to excessive oil consumption, cylinder wear, and potential engine failure. This is often more prevalent in colder climates or with prolonged short-trip driving, and typically affects cylinders on one bank. A thorough pre-purchase inspection should include a bore scope inspection.
Other frequently reported problems include coolant expansion tank cracks and leaks, requiring replacement. The Air-Oil Separator (AOS) can fail, causing excessive smoke from the exhaust, high oil consumption, and vacuum issues. Worn water pumps are also common maintenance items.
Electrically, some owners report failing pixel displays on the climate control and radio units, and "sticky" buttons on various interior controls. Condensation within the "fried egg" headlights is another cosmetic but persistent issue.
Regarding recalls for the 1999 Porsche 911, general recalls have been issued for minor issues such as airbag module programming updates or lighting component checks, but no widespread, critical safety recalls directly addressing the major engine reliability concerns have been issued by Porsche.
How long will the 1999 Porsche 911 last?
What Technology & Safety Features are Included?
Built-in Tech: The car featured an on-board computer accessible via the instrument cluster, providing basic information like fuel consumption, range, and outside temperature. It also had automatic climate control, a significant comfort feature. Keyless entry was standard, controlling the central locking system.
Entertainment: The standard entertainment system typically included an AM/FM radio and a CD player. Optional upgrades included a multi-CD changer (often mounted in the front trunk) and a premium sound system, such as a Bose amplifier and speaker setup, which significantly improved audio quality. An early, CD-ROM-based navigation system was also an option, though its functionality is very limited and impractical compared to modern GPS systems.
Driver-Assistance Features: Driver-assistance features were minimal. The 911 came standard with an Anti-lock Braking System (ABS). Porsche Stability Management (PSM), which combined traction control and electronic stability control, was a significant optional extra for the Carrera models and often standard on the Carrera 4. This system helped maintain vehicle stability during aggressive driving or adverse conditions. There were no advanced features like adaptive cruise control, lane-keeping assist, or blind-spot monitoring found in contemporary vehicles.
Safety Features: Safety was a priority with dual front airbags for the driver and passenger. Additionally, the 911 included the Porsche Side Impact Protection System (POSIP), which incorporated side airbags mounted in the seats, providing head and thorax protection. Seatbelt pretensioners were also standard. The car's robust chassis design contributed to passive safety.
Crash-Test Ratings: It is highly unlikely to find modern crash-test ratings from organizations like NHTSA or IIHS for a low-volume, high-performance sports car from 1999. These tests were not as prevalent or standardized for such vehicles at the time, and the focus was more on internal manufacturer safety standards.
What Colors Options are Available?
1999 Porsche 911 Prices and Market Value
Currently, used market prices for well-maintained 1999 models range widely from $25,000 to $40,000+, depending heavily on condition, mileage, and service history. Exceptionally clean, low-mileage examples with documented IMS bearing service can command even higher prices. This generation is now appreciating, having shaken off much of its initial depreciation. Factors affecting resale value include a comprehensive service history, especially proof of IMS bearing preventative maintenance, absence of bore scoring, manual transmission preference, desirable options, and overall cosmetic condition. Tiptronic models generally fetch less.
1999 Porsche 911 Cost of Ownership
1999 Porsche 911 Fuel Efficiency
1999 Porsche 911 Recalls & Defects
Fuel System, Gasoline:storage:tank Assembly
1999 Porsche 911 Insurance
reasonable repair costs.
How Does the 1999 Porsche 911 Compare to Other Coupe?
BMW M3 (E36/early E46): The contemporary E36 M3 (ending production around 1999) offered similar performance with a front-engine, rear-wheel-drive layout, known for its superb inline-six and balanced chassis. The E46 M3, arriving shortly after, raised the bar significantly. While the 911 offered unique rear-engine dynamics, the M3 was arguably more practical for daily use and generally less costly to maintain over the long term, though still a high-performance machine. The 911 often felt more precise and exotic.
Chevrolet Corvette C5: The C5 Corvette (1997-2004) was a performance bargain. Its large V8 offered more brute force, better straight-line acceleration (especially the Z06), and significantly lower running costs compared to the 911. While the 911 excelled in steering feel and chassis composure, the C5 was an impressive track car for its price. The Corvette was generally cheaper to acquire new and used.
Mercedes-Benz CLK AMG (e.g., CLK55 AMG): This was more of a grand tourer with a powerful V8, offering luxurious comfort and effortless speed. It lacked the raw, driver-focused engagement of the 911 but provided a more refined experience. Performance was strong, but handling was not as sharp.
Ferrari 360 Modena: A direct exotic competitor, but in a much higher price bracket. The 360 offered superior performance, exotic styling, and a higher level of prestige, but at exponentially greater ownership costs.
Performance: The 911 stood out for its unique rear-engine handling characteristics, precise steering, and impressive balance. Rivals like the C5 offered more raw power, while the M3 provided a different, yet equally engaging, front-engine experience.
Features: All rivals offered similar luxury and convenience features for the era. The 911's interior was well-appointed, though not as overtly luxurious as some Mercedes models.
Reliability: This is where the 996 is often scrutinized due to the IMS bearing and bore scoring issues. A well-maintained C5 Corvette or M3 from the era might prove more consistently reliable in terms of major engine components, though all performance cars have their quirks.
Price: The 996 was priced higher than the M3 and significantly higher than the C5 Corvette when new. In the used market, a well-sorted 996 is now often comparable to or slightly higher than equivalent M3s and C5s, especially with IMS addressed.
Similar Alternatives: The Porsche Boxster (986 generation) offers a very similar mid-engine Porsche driving experience for a lower purchase and ownership cost. Later 996.2 models (2002-2004) with the 3.6L engine addressed some bore scoring issues, but still retained the single-row IMS bearing. The Lotus Elise/Exige (if available in 1999, though later) would offer purer driving but less daily usability.
Final Verdict: Is the 1999 Porsche 911 a Good Coupe?
It is absolutely worth buying, but only under specific conditions. As a used vehicle, a thorough pre-purchase inspection (PPI) by a Porsche specialist is non-negotiable. Prioritize examples with comprehensive service records, especially those that have had the Intermediate Shaft (IMS) bearing preventative maintenance performed or are priced to account for this critical upgrade. A bore scope inspection is also essential to check for cylinder scoring. The Carrera and Carrera 4 trims offer excellent value. Buyers must budget generously for ongoing maintenance and potential significant repairs. For the right informed buyer, the 1999 911 offers incredible performance and prestige at an increasingly appreciating value, making it a truly rewarding ownership experience.