The 2005 Mack MR688S is a rugged vocational truck, part of Mack's long-standing tradition of building durable heavy-duty vehicles. Primarily produced as a cab-over chassis, it was manufactured for a significant period, with the MR series dating back decades and continuing through the 2005 model year. Key trims often centered around specific vocational applications like refuse, construction, or concrete. Its popularity stems from its legendary robustness, straightforward engineering, and the iconic Mack bulldog hood ornament, signifying a commitment to power and longevity. Pricing varied greatly based on configuration, but new models were in the upper echelon of commercial truck costs.
The Good
The 2005 Mack MR688S boasts exceptional durability and a commanding presence that appeals to the pride of ownership. Practically, its robust build ensures reliable performance in demanding vocational roles, offering strong power delivery and a reputation for longevity, making it a sound investment for businesses.
The Bad
Potential buyers of the 2005 Mack MR688S should be aware of the potential for rust, particularly in heavy-duty applications involving salt or moisture. Older models may also exhibit wear and tear on suspension components and air systems due to their vocational nature and high mileage.
2005 Mack MR688S: Quick Overview
- Engine Options: The 2005 Mack MR688S was typically powered by robust Mack engines. Common options included the Mack E7 series engines. These were inline 6-cylinder diesel engines known for their torque and durability. Specific displacements could vary, but they were designed for heavy-duty vocational applications.
- Horsepower: Horsepower ratings for the Mack E7 engines in this era typically ranged from approximately 300 horsepower up to around 450 horsepower or more, depending on the specific engine tune and application. Higher horsepower variants were often selected for more demanding tasks.
- Fuel Economy: Fuel economy figures for heavy-duty vocational trucks like the 2005 Mack MR688S are not typically measured or reported in the same way as passenger vehicles. Expect figures to be significantly lower than cars, likely in the range of 4-8 miles per gallon, heavily influenced by load, terrain, driving style, and the specific vocational duty cycle.
- 0-60 Times: 0-60 mph acceleration times are not a relevant metric for this class of vehicle. These trucks are designed for pulling heavy loads and operating at low speeds in vocational settings, not for rapid acceleration.
- Towing Capacity (if applicable): The towing capacity of the 2005 Mack MR688S is highly dependent on its specific configuration, including axle ratings, chassis design, and transmission. As a heavy-duty vocational chassis, it was capable of handling substantial Gross Combination Weight Ratings (GCWR), often exceeding 50,000 lbs, and configured for a wide array of specialized body types for hauling or specialized work.
- Trim-Level Features: As a vocational truck, "trims" are less about luxury features and more about functional configurations. Key features varied by application. Common configurations included:
- Refuse Chassis: Optimized for waste management, often with specific body mounting points and hydraulic systems.
- Construction Chassis: Built for durability with heavier-duty suspension, axles, and protection for off-road use.
- Concrete Mixer Chassis: Designed to accommodate the weight and power requirements of a concrete mixing drum.
2005 Mack MR688S Specifications
Vehicle Information
| Year | 2005 |
| Make | Mack |
| Model | MR688S |
| Trim | - |
| Style | - |
| Type | Truck |
| Category | Heavy Truck |
Manufacturing Details
| Made In | United States |
| Manufacturing City | MACUNGIE |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 330001 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 12L I6 |
| Engine Size | 12L |
| Engine Cylinders | 6 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | - |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2005 Mack MR688S Have?
The 2005 Mack MR688S, like many heavy-duty vocational trucks of its era, is known for its robust construction but can develop certain issues over time, especially with high mileage and demanding use. One of the most common concerns for trucks of this age, particularly in regions with harsh weather, is rust. The frame, cab corners, and wheel wells are susceptible to corrosion, which can compromise structural integrity if not addressed. This is a long-term reliability concern directly related to environmental exposure and maintenance.
- Engine and Drivetrain: While Mack engines are generally reliable, components like the turbocharger, fuel injectors, and cooling system can require maintenance or replacement over many years. Oil leaks from engine seals are also not uncommon in older, high-mileage units. The transmission, whether manual or automatic, can also develop issues with clutch wear, synchronizers, or hydraulic systems.
- Air Brake System: The air brake system is critical for safety and requires regular inspection. Issues can include air leaks from hoses, seals, or valves, compressor problems, or issues with the air dryer, all of which can affect braking performance.
- Suspension and Axles: Given its vocational purpose, suspension components such as leaf springs, bushings, and shock absorbers can experience significant wear. Axle seals and bearings can also be points of failure, especially if regularly subjected to heavy loads or rough terrain.
- Electrical System: While generally straightforward, older electrical systems can develop intermittent faults due to corroded connections, failing relays, or worn wiring harnesses. This can manifest in various issues, from lighting problems to gauge malfunctions.
- Recalls: Specific recalls for the 2005 model year are not widely publicized in consumer databases for commercial vehicles in the same way as passenger cars. However, owners should always consult Mack Trucks or official dealer networks for any outstanding safety recalls pertinent to their specific VIN. Common recall areas for heavy trucks of this era could involve braking systems, steering components, or emission-related parts if applicable to that model year's regulations.
How long will the 2005 Mack MR688S last?
Estimating average mileage for a 2005 Mack MR688S is challenging as these are vocational trucks used in diverse applications. However, it's not uncommon for these vehicles to accumulate well over 300,000 to 500,000 miles, and some can even surpass 750,000 miles if meticulously maintained. Their service life is significantly extended by proactive maintenance. Long-term durability is a hallmark of Mack trucks; their robust chassis and proven powertrains are designed for longevity. However, weaknesses that emerge over time often relate to cumulative wear and tear. Rust, as mentioned, can be a major issue depending on operating conditions. Components like the suspension, exhaust system, and certain engine accessories will eventually require attention or replacement. Despite these potential issues, the core engineering of the MR688S allows it to remain a capable workhorse for many years, a testament to its durable construction.
What Technology & Safety Features are Included?
The 2005 Mack MR688S, by its nature as a heavy-duty vocational truck, prioritizes function and durability over advanced technology and driver-assistance features commonly found in modern passenger vehicles or even contemporary highway tractors.
Built-in Tech & Entertainment: Technology in the 2005 MR688S is generally basic and utilitarian. Standard features would include a functional analog gauge cluster providing essential information like speed, engine RPM, oil pressure, coolant temperature, and air brake pressure. The entertainment system was typically a basic AM/FM radio, possibly with a cassette player or an early CD player as an option. Connectivity options like Bluetooth or USB ports were not standard and would be rare additions, if present at all.
Driver-Assistance Features: Driver-assistance systems as we know them today (like lane departure warning, adaptive cruise control, or automatic emergency braking) were virtually non-existent in vocational trucks of this era. The primary focus was on providing the driver with clear visibility and responsive controls. Features like power steering and power windows (if equipped) would be considered advanced conveniences.
Safety Features: Safety in the MR688S is built around its robust construction and essential active safety systems. Key safety features include:
Crash-Test Ratings: Official crash-test ratings from organizations like the NHTSA or IIHS are generally not available or applicable to heavy-duty vocational trucks like the 2005 Mack MR688S. These vehicles are designed to meet stringent federal motor vehicle safety standards (FMVSS) for commercial vehicles, which focus on structural integrity under heavy loads and the performance of critical safety systems like braking and steering. The inherent strength and mass of the vehicle contribute significantly to its safety in collisions.
Built-in Tech & Entertainment: Technology in the 2005 MR688S is generally basic and utilitarian. Standard features would include a functional analog gauge cluster providing essential information like speed, engine RPM, oil pressure, coolant temperature, and air brake pressure. The entertainment system was typically a basic AM/FM radio, possibly with a cassette player or an early CD player as an option. Connectivity options like Bluetooth or USB ports were not standard and would be rare additions, if present at all.
Driver-Assistance Features: Driver-assistance systems as we know them today (like lane departure warning, adaptive cruise control, or automatic emergency braking) were virtually non-existent in vocational trucks of this era. The primary focus was on providing the driver with clear visibility and responsive controls. Features like power steering and power windows (if equipped) would be considered advanced conveniences.
Safety Features: Safety in the MR688S is built around its robust construction and essential active safety systems. Key safety features include:
- Air Brakes: Powerful and reliable air braking system designed for heavy loads and frequent stopping.
- Heavy-Duty Frame and Cab Construction: Built to withstand significant stress and provide a protective shell for the driver.
- Seat Belts: Standard safety restraint for the driver.
- Mirrors: Multiple large mirrors providing comprehensive visibility around the vehicle.
Crash-Test Ratings: Official crash-test ratings from organizations like the NHTSA or IIHS are generally not available or applicable to heavy-duty vocational trucks like the 2005 Mack MR688S. These vehicles are designed to meet stringent federal motor vehicle safety standards (FMVSS) for commercial vehicles, which focus on structural integrity under heavy loads and the performance of critical safety systems like braking and steering. The inherent strength and mass of the vehicle contribute significantly to its safety in collisions.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
2005 Mack MR688S Prices and Market Value
New pricing for a 2005 Mack MR688S varied dramatically based on its specific vocational configuration, engine, and options, but typically ranged from approximately $100,000 to over $200,000. These were substantial investments for businesses. On the current used market, prices for a 2005 Mack MR688S can range widely, from as low as $10,000-$15,000 for units needing significant work or with very high mileage, to upwards of $30,000-$50,000 or more for well-maintained, low-hour examples in desirable configurations. Depreciation is significant in the first few years, but after a decade or more, these trucks tend to hold their value relatively well compared to passenger cars, especially those in good mechanical condition and with sought-after vocational setups. Factors affecting resale value include overall condition, mileage, maintenance history, the type of vocational body installed, and regional demand for specific truck configurations. Rust and engine hours are primary detractors.
2005 Mack MR688S Cost of Ownership
Owning a 2005 Mack MR688S is generally considered costly, especially when compared to smaller vehicles. Insurance premiums will be higher due to its commercial nature and replacement value. Fuel costs are substantial, with notoriously low MPG figures that are heavily dependent on load and operation. Maintenance is an ongoing expense, requiring regular checks of fluids, filters, and critical components. Repair costs can be significant; while parts are available, labor for heavy-duty trucks is specialized. Long-term ownership is economical only if the truck is actively used for income-generating purposes, where its durability justifies the investment. For personal use or infrequent operation, it is a very costly vehicle to own.
2005 Mack MR688S Fuel Efficiency
Fuel Type
Diesel
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
2005 Mack MR688S 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
2005 Mack MR688S Insurance
Insurance for a 2005 Mack MR688S is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2005 Mack MR688S Compare to Other Truck?
The 2005 Mack MR688S competed in the tough vocational truck market against formidable rivals like the Freightliner M2 series, Kenworth T300/T400, Peterbilt 320/330, and International WorkStar models.
Performance: In terms of raw power and torque for demanding tasks, the Mack MR688S, with its E7 engine, was a strong contender, often matching or exceeding competitors in heavy-duty applications. Its performance was geared towards pulling power and job-site capability rather than speed.
Features: Feature-wise, the MR688S was functional and durable. Competitors like Freightliner and Kenworth might have offered slightly more refined or technologically advanced cabin options, especially in higher-tier vocational trucks. However, the MR688S focused on a straightforward, operator-friendly design.
Reliability: Mack trucks have a legendary reputation for reliability and toughness, and the MR688S was no exception. While all heavy trucks require maintenance, Macks are often praised for their robust powertrains and chassis. Some rivals might have had specific advantages in certain areas, like electronics or driver comfort, but the Mack's overall long-term durability in harsh conditions was a significant selling point.
Price: When new, pricing was competitive within the premium vocational truck segment. Used market pricing is highly variable.
Alternatives:
Performance: In terms of raw power and torque for demanding tasks, the Mack MR688S, with its E7 engine, was a strong contender, often matching or exceeding competitors in heavy-duty applications. Its performance was geared towards pulling power and job-site capability rather than speed.
Features: Feature-wise, the MR688S was functional and durable. Competitors like Freightliner and Kenworth might have offered slightly more refined or technologically advanced cabin options, especially in higher-tier vocational trucks. However, the MR688S focused on a straightforward, operator-friendly design.
Reliability: Mack trucks have a legendary reputation for reliability and toughness, and the MR688S was no exception. While all heavy trucks require maintenance, Macks are often praised for their robust powertrains and chassis. Some rivals might have had specific advantages in certain areas, like electronics or driver comfort, but the Mack's overall long-term durability in harsh conditions was a significant selling point.
Price: When new, pricing was competitive within the premium vocational truck segment. Used market pricing is highly variable.
Alternatives:
- Similar Alternatives: The Kenworth T300/T400 and Peterbilt 320/330 offer comparable vocational capabilities and build quality, often with slightly different design philosophies and engine choices. International's WorkStar series is also a direct competitor, known for its adaptability to various vocational needs.
- Potentially Better Alternatives (depending on specific needs): For slightly more comfort or advanced features in a vocational application, one might consider newer models of these same brands or specific configurations from companies like Sterling (though many are now defunct). For lighter vocational tasks, a Freightliner M2 might offer a more maneuverable or fuel-efficient option. However, for sheer ruggedness and a no-nonsense work ethic, the Mack MR688S remains a top choice for its intended purpose.
Final Verdict: Is the 2005 Mack MR688S a Good Truck?
The 2005 Mack MR688S is ideal for businesses and individuals who require an extremely durable and powerful vocational truck for demanding applications such as refuse collection, construction, heavy hauling, or municipal services. It is worth buying if your primary needs are ruggedness, reliability, and the ability to withstand harsh conditions, and if you have the resources for its associated ownership costs.
This truck is best purchased used, as new models are no longer produced. When buying used, prioritize vehicles with comprehensive maintenance records, lower engine hours, and minimal signs of rust or major structural damage. Specific trims like a well-equipped refuse chassis or a heavy-duty construction variant would be more valuable for their intended purposes. It is not a suitable vehicle for everyday commuting or light-duty tasks due to its size, fuel consumption, and operating characteristics. A buyer must be prepared for ongoing maintenance and potential repairs inherent to a vehicle of this age and class.
This truck is best purchased used, as new models are no longer produced. When buying used, prioritize vehicles with comprehensive maintenance records, lower engine hours, and minimal signs of rust or major structural damage. Specific trims like a well-equipped refuse chassis or a heavy-duty construction variant would be more valuable for their intended purposes. It is not a suitable vehicle for everyday commuting or light-duty tasks due to its size, fuel consumption, and operating characteristics. A buyer must be prepared for ongoing maintenance and potential repairs inherent to a vehicle of this age and class.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.