The 1999 Kenworth T600, part of a lineage dating back to the late 1980s, is a Class 8 semi-truck renowned for its aerodynamic design and driver-focused comfort. Primarily offered as a conventional cab tractor, its iconic sloped hood and integrated sleeper configurations became a hallmark. While specific trims vary by application, the T600's popularity stems from its blend of fuel efficiency and a comfortable, productive working environment, making it a preferred choice for long-haul trucking.
The Good
The 1999 Kenworth T600 excels in fuel efficiency, thanks to its aerodynamic design, appealing to practical buyers. Its robust build promises reliability and longevity, a key emotional and practical draw for fleet owners and owner-operators alike. Driver comfort is also a strong suit, translating to improved productivity and well-being on the road.
The Bad
When considering a 1999 Kenworth T600, potential buyers should be aware of common issues like aging electrical components, potential for rust on certain body panels, and the need for thorough inspection of the powertrain, especially if maintenance history is uncertain. Wear and tear on suspension and braking systems are also important.
1999 Kenworth T600: Quick Overview
- Engine Options: The 1999 Kenworth T600 was typically powered by a range of Cummins and Caterpillar diesel engines. Common options included the Cummins N14, M11, and ISM series, as well as Caterpillar C-10, C-12, and C-15 engines.
- Horsepower: Horsepower varied significantly based on the specific engine model and configuration. These engines generally ranged from approximately 370 horsepower to over 500 horsepower, catering to different hauling demands.
- Fuel Economy: Fuel economy for the T600 was a strong selling point due to its aerodynamic design. While precise figures are hard to pinpoint and depend heavily on load, road conditions, and driving style, owners often reported figures in the range of 5.5 to 7 miles per gallon.
- 0-60 Times: 0-60 mph times are not typically a primary metric for Class 8 trucks like the Kenworth T600. Their focus is on sustained power and torque for hauling heavy loads, not rapid acceleration.
- Towing Capacity: As a heavy-duty semi-truck, the T600's towing capacity is substantial, designed to haul Gross Combination Weights (GCW) of up to 80,000 pounds or significantly more with appropriate configurations and permits, often exceeding 100,000 pounds for specialized hauling.
- Trim-Level Features: While Kenworth T600s are highly configurable and often customized by owners or fleets, common features included various sleeper cab configurations (e.g., 42-inch, 62-inch, 72-inch), air-ride suspensions for enhanced comfort, power steering, tilt steering wheels, and a variety of interior appointments ranging from basic utilitarian to more plush driver accommodations. Optional features often included premium sound systems, auxiliary heating and cooling units, and advanced instrumentation.
1999 Kenworth T600 Specifications
Vehicle Information
| Year | 1999 |
| Make | Kenworth |
| Model | T600 |
| Trim | - |
| Style | - |
| Type | Truck |
| Category | Special Purpose Vehicle Class 8 Tractor |
Manufacturing Details
| Made In | Mexico |
| Manufacturing City | MEXICALI |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 57000 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 12.0-L L-6 Diesel |
| Engine Size | 12L |
| Engine Cylinders | 6 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | 6x4 |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
Vehicle History Report
Vehicle
Specifications
Specifications
Ownership
History
History
All History
Events
Events
NMVTIS Title
History Check
History Check
Salvage/Rebuilt
Check
Check
Accident
Check
Check
Theft
Check
Check
Open Lien
Check
Check
Past Sale
Listings
Listings
Safety
Recalls
Recalls
Odometer
Check
Check
Market Price
Analysis
Analysis
What Problems Does the 1999 Kenworth T600 Have?
While the 1999 Kenworth T600 is generally considered a reliable workhorse, as with any vehicle of this age and type, certain issues are more frequently reported. One common area of concern for trucks from this era is the aging of electrical systems. Connectors can corrode, wiring harnesses may degrade, leading to intermittent faults or complete system failures. This can manifest in issues with lights, gauges, or engine control modules.
Another area to watch is the potential for rust, particularly around wheel wells, the lower cab areas, and the frame rails, especially in regions with harsh winters or heavy road salt usage. The advanced aerodynamic fairings, while beneficial for efficiency, can also trap moisture, accelerating corrosion if not properly maintained.
Powertrain reliability is typically high for Cummins and Caterpillar engines, but regular maintenance is paramount. Owners have reported issues with fuel injectors, turbochargers, and EGR systems on higher-mileage units. Clutch wear, transmission synchros, and rear axle seals are also common wear-and-tear items that require attention.
Suspension components, such as airbags, shocks, and bushings, can wear out over time, affecting ride quality and handling. The air brake system, while robust, requires regular inspection and maintenance of seals, valves, and slack adjusters to ensure proper operation and safety.
Specific model year recalls for 1999 Kenworth T600s are difficult to generalize without specific VIN information, as recalls are tied to manufacturing batches and specific component issues. However, potential buyers should always check for outstanding recalls with the manufacturer. Long-term reliability is heavily dependent on the truck's original build quality, how it was spec'd, and, most importantly, the rigor of its maintenance schedule throughout its service life. A well-maintained T600 can still offer many years of service, while a neglected one may present numerous costly repairs.
Another area to watch is the potential for rust, particularly around wheel wells, the lower cab areas, and the frame rails, especially in regions with harsh winters or heavy road salt usage. The advanced aerodynamic fairings, while beneficial for efficiency, can also trap moisture, accelerating corrosion if not properly maintained.
Powertrain reliability is typically high for Cummins and Caterpillar engines, but regular maintenance is paramount. Owners have reported issues with fuel injectors, turbochargers, and EGR systems on higher-mileage units. Clutch wear, transmission synchros, and rear axle seals are also common wear-and-tear items that require attention.
Suspension components, such as airbags, shocks, and bushings, can wear out over time, affecting ride quality and handling. The air brake system, while robust, requires regular inspection and maintenance of seals, valves, and slack adjusters to ensure proper operation and safety.
Specific model year recalls for 1999 Kenworth T600s are difficult to generalize without specific VIN information, as recalls are tied to manufacturing batches and specific component issues. However, potential buyers should always check for outstanding recalls with the manufacturer. Long-term reliability is heavily dependent on the truck's original build quality, how it was spec'd, and, most importantly, the rigor of its maintenance schedule throughout its service life. A well-maintained T600 can still offer many years of service, while a neglected one may present numerous costly repairs.
How long will the 1999 Kenworth T600 last?
The 1999 Kenworth T600, built with robust components, is designed for longevity. Owner data and maintenance habits are the biggest determinants of its lifespan. A well-maintained T600 can easily surpass 1 million miles, with many trucks continuing to operate effectively for 15-20 years or more. The long-term durability is a testament to Kenworth's engineering. However, weaknesses emerge over time, primarily related to the aging of electrical components, the wear and tear on suspension and powertrain parts, and potential corrosion if not diligently treated. Regular preventative maintenance is key to mitigating these issues and ensuring continued reliable service.
What Technology & Safety Features are Included?
The 1999 Kenworth T600 represents a period where technology in commercial vehicles was advancing but was still significantly less integrated than in modern trucks. Built-in tech was primarily focused on functionality and driver comfort rather than sophisticated infotainment. Standard features often included a basic AM/FM radio, possibly with a cassette player. More advanced entertainment options, like CD players or satellite radio, would have been optional upgrades.
Driver-assistance features in 1999 were rudimentary. While advanced cruise control might have been available on some models, features like lane-keeping assist, adaptive cruise control, or automatic emergency braking were not present. The focus was on mechanical systems and driver awareness. Safety features were centered around the truck's structural integrity, robust braking systems (air brakes), and good visibility provided by the aerodynamic design and large windshield. Anti-lock Braking Systems (ABS) were becoming more common and would likely have been an available or standard safety feature on many 1999 T600s.
Optional features could have included upgraded interior amenities, auxiliary power outlets, premium sleeper cab packages with amenities like refrigerators or televisions, and advanced climate control systems. The cab structure itself was designed with driver safety in mind, featuring reinforced pillars and a sturdy frame.
Crash-test ratings for commercial heavy-duty trucks like the Kenworth T600 are not typically performed or published by organizations like the NHTSA in the same way as passenger vehicles. Instead, safety is evaluated through rigorous internal testing by the manufacturer and adherence to industry standards and regulations governing truck design and operation, focusing on occupant protection in rollovers and frontal impacts.
Driver-assistance features in 1999 were rudimentary. While advanced cruise control might have been available on some models, features like lane-keeping assist, adaptive cruise control, or automatic emergency braking were not present. The focus was on mechanical systems and driver awareness. Safety features were centered around the truck's structural integrity, robust braking systems (air brakes), and good visibility provided by the aerodynamic design and large windshield. Anti-lock Braking Systems (ABS) were becoming more common and would likely have been an available or standard safety feature on many 1999 T600s.
Optional features could have included upgraded interior amenities, auxiliary power outlets, premium sleeper cab packages with amenities like refrigerators or televisions, and advanced climate control systems. The cab structure itself was designed with driver safety in mind, featuring reinforced pillars and a sturdy frame.
Crash-test ratings for commercial heavy-duty trucks like the Kenworth T600 are not typically performed or published by organizations like the NHTSA in the same way as passenger vehicles. Instead, safety is evaluated through rigorous internal testing by the manufacturer and adherence to industry standards and regulations governing truck design and operation, focusing on occupant protection in rollovers and frontal impacts.
What Colors Options are Available?
We’re working on this section!
In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
1999 Kenworth T600 Prices and Market Value
When new, a 1999 Kenworth T600, depending on its configuration, engine, and options, could have a sticker price ranging from approximately $90,000 to well over $150,000. As a depreciating asset, its value significantly declines over time. Currently, used 1999 Kenworth T600 models can be found for prices ranging broadly from $15,000 to $40,000 or more, heavily influenced by mileage, overall condition, engine hours, maintenance history, and specific equipment. Factors like remaining engine life, transmission condition, tire wear, and whether it's been maintained to a high standard will drastically affect resale value. Trucks with complete service records and in good mechanical order will always command a premium.
1999 Kenworth T600 Cost of Ownership
Owning a 1999 Kenworth T600 involves significant costs. Insurance premiums for commercial trucks of this class are substantial and vary based on coverage, radius of operation, and driving record. Fuel costs, while improved by its aerodynamics, are still a major expense given its diesel consumption. Maintenance and repair costs are ongoing; while built for durability, parts and labor for heavy-duty trucks are expensive. Routine maintenance such as oil changes, filter replacements, and brake checks are critical. Unexpected repairs, especially on aging electrical or powertrain components, can be costly. Overall, the T600 is a professional tool, and while its efficiency offers some economy, its ownership costs are decidedly significant, making it more costly than a consumer vehicle.
1999 Kenworth T600 Fuel Efficiency
Fuel Type
Diesel
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
1999 Kenworth T600 Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
1999 Kenworth T600 Insurance
Insurance for a 1999 Kenworth T600 is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1999 Kenworth T600 Compare to Other Truck?
The 1999 Kenworth T600 competed in the highly contested Class 8 conventional truck market. Its primary rivals included models like the Peterbilt 377/379, Freightliner FLD series, and Volvo VNL series. In terms of performance, the T600 offered comparable power and torque to its peers, with engine options from Cummins and Caterpillar being common across the industry, providing robust hauling capabilities. Its aerodynamic design, however, often gave it a slight edge in fuel efficiency, a significant factor for owner-operators and fleets.
Features in 1999 were becoming more driver-centric. While the T600 focused on comfort and ergonomics with its spacious cabs and sleeper options, competitors like Peterbilt also offered highly customizable and comfortable interiors. Freightliner often provided strong value and a wider range of configurations. Volvo tended to emphasize advanced technology and driver comfort, sometimes at a higher price point.
Reliability is where Kenworth and Peterbilt consistently ranked high. Both brands are known for their durable construction and longevity when properly maintained. Freightliner and Volvo also offered reliable trucks, though perceptions of build quality could vary.
Price-wise, Kenworth and Peterbilt were typically positioned as premium offerings, meaning they often came with a higher initial cost compared to models from Freightliner, which aimed for a more value-oriented market.
For similar alternatives in 1999, one would look at the Peterbilt 377/379, which shares much of the same engineering DNA and offers a similar blend of performance, durability, and driver comfort. The Freightliner FLD120 is a strong contender for those seeking a more budget-friendly option that still provides solid performance and reliability. If advanced driver comfort and a slightly more modern feel are prioritized, a Volvo VNL from the late 90s might be considered, though often at a higher used price. Ultimately, the T600 remains a solid choice, but these alternatives offer comparable or potentially better value depending on specific needs and budget.
Features in 1999 were becoming more driver-centric. While the T600 focused on comfort and ergonomics with its spacious cabs and sleeper options, competitors like Peterbilt also offered highly customizable and comfortable interiors. Freightliner often provided strong value and a wider range of configurations. Volvo tended to emphasize advanced technology and driver comfort, sometimes at a higher price point.
Reliability is where Kenworth and Peterbilt consistently ranked high. Both brands are known for their durable construction and longevity when properly maintained. Freightliner and Volvo also offered reliable trucks, though perceptions of build quality could vary.
Price-wise, Kenworth and Peterbilt were typically positioned as premium offerings, meaning they often came with a higher initial cost compared to models from Freightliner, which aimed for a more value-oriented market.
For similar alternatives in 1999, one would look at the Peterbilt 377/379, which shares much of the same engineering DNA and offers a similar blend of performance, durability, and driver comfort. The Freightliner FLD120 is a strong contender for those seeking a more budget-friendly option that still provides solid performance and reliability. If advanced driver comfort and a slightly more modern feel are prioritized, a Volvo VNL from the late 90s might be considered, though often at a higher used price. Ultimately, the T600 remains a solid choice, but these alternatives offer comparable or potentially better value depending on specific needs and budget.
Final Verdict: Is the 1999 Kenworth T600 a Good Truck?
The 1999 Kenworth T600 is ideally suited for owner-operators and small to medium-sized fleets looking for a proven, durable, and fuel-efficient Class 8 truck that offers good driver comfort. It's a truck that rewards diligent maintenance with longevity. Whether it's worth buying today depends heavily on its condition and price. A well-maintained unit with a strong service history and a reliable engine can still be a sound investment for long-haul trucking, especially when purchased at a fair market price. It is generally not worth buying if it has neglected maintenance, significant rust, or major impending repairs. For those seeking reliability and efficiency without the latest electronic gizmos, a well-inspected 1999 Kenworth T600 remains a viable option in the used heavy-duty truck market.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.