by VIN, Year, Make, Model by License Plate

2018 Mack GU813 Overview, Reviews, Ratings & Specs

Rating: 0.00
Based on 0 Owner Reviews
Jovan | March 3, 2026
The 2018 Mack GU813 is a robust vocational truck, part of a long lineage of durable Mack vehicles known for their hard-working nature. This model primarily serves in heavy-duty applications like construction, refuse, and heavy hauling. While specific trims are less defined by luxury and more by vocational focus, its reputation for ruggedness and longevity makes it a popular choice for businesses prioritizing operational uptime and cost-effectiveness. Its pricing typically reflects its utilitarian purpose, aimed at commercial fleets and owner-operators.
The Good

The 2018 Mack GU813 excels in raw performance and unwavering reliability, built for demanding tasks. Its no-nonsense design prioritizes function, offering surprising driver comfort for long hauls, translating to excellent long-term value and peace of mind for practical operators and those who emotionally connect with a truck that gets the job done.

The Bad

The 2018 Mack GU813, while robust, may exhibit higher maintenance costs due to its heavy-duty components. Older models can sometimes suffer from electrical gremlins, and the ride quality, though improved, isn't as refined as lighter-duty trucks, which could be a concern for drivers spending extensive time in the cab.

2018 Mack GU813: Quick Overview

  • Engine Options: The 2018 Mack GU813 was primarily equipped with Mack's MP series engines. The most common were the Mack MP7, Mack MP8, and potentially the Mack MP10, offering a range of power and torque to suit various vocational needs.
  • Horsepower: Horsepower ratings varied significantly based on the engine. The MP7 typically ranged from around 325 to 405 horsepower. The MP8 offered more robust power, generally from 405 to 505 horsepower. The MP10, when available, could push even higher, often exceeding 500 horsepower.
  • Fuel Economy: Specific MPG figures for vocational trucks like the GU813 are highly variable and not typically advertised in the same way as consumer vehicles. Fuel economy is heavily dependent on engine choice, transmission, axle ratios, load, and driving conditions. Expect significantly lower MPG than a pickup truck, often in the single digits or low double digits under heavy load.
  • 0-60 Times: 0-60 mph times are generally not a relevant metric for this class of heavy-duty vocational truck. Its purpose is not rapid acceleration but sustained, powerful work.
  • Towing Capacity: Towing capacity is extensive and application-dependent. The GU813 is designed for heavy hauling, with Gross Combination Weight Ratings (GCWR) often reaching well over 100,000 pounds, depending on the chassis configuration, axles, and powertrain.
  • Trim-Level Features: The GU813 does not adhere to traditional consumer trim levels. Instead, its features are dictated by its vocational application. Standard features would include a robust chassis, heavy-duty suspension, powerful braking systems, and a functional, driver-focused cab. Optional features could include various interior comfort upgrades, advanced telematics, and specific body configurations (e.g., dump body, concrete mixer, refuse collection equipment). The focus is on durability, visibility, and ease of operation in demanding environments.

2018 Mack GU813 Specifications

Vehicle Information
Year 2018
Make Mack
Model GU813
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 12.7L I6
Engine Size 12.7L
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 -

Vehicle History Report

Vehicle
Specifications
Ownership
History
All History
Events
NMVTIS Title
History Check
Salvage/Rebuilt
Check
Accident
Check
Theft
Check
Open Lien
Check
Past Sale
Listings
Safety
Recalls
Odometer
Check
Market Price
Analysis

What Problems Does the 2018 Mack GU813 Have?

The 2018 Mack GU813, being a vocational truck, tends to have issues that are more performance-related and operational rather than common consumer complaints. One frequently reported area of concern for Mack trucks of this era, including the GU813, can be related to the Emissions Control Systems. Issues with the Diesel Particulate Filter (DPF) regeneration cycles, Selective Catalytic Reduction (SCR) systems, and associated sensors (like NOx sensors) can lead to fault codes, reduced engine power (limp mode), and costly repairs. These systems are complex and can be sensitive to fuel quality and maintenance practices. Another area that sometimes arises is concerning the electrical system. While not a widespread epidemic, some owners have reported intermittent electrical gremlins, issues with dashboard warning lights, or problems with accessory functions. This can be tricky to diagnose and repair. On the mechanical side, while Mack engines are generally robust, some reports might touch upon the durability of specific components under extreme stress, such as turbochargers or fuel injectors, especially if the truck is consistently operated at its maximum capacity or if maintenance schedules are not strictly followed. Transmission issues, particularly with certain automated manual transmissions (AMTs) or heavy-duty automatic transmissions, can also be a point of discussion. These can range from shifting problems to component failures over high mileage. Given its vocational nature, wear and tear on the chassis, suspension components (like leaf springs or air suspension parts), and braking systems are expected, but premature wear could indicate an issue. Regarding specific model year recalls, it's always advisable to check the National Highway Traffic Safety Administration (NHTSA) database for any official recalls pertaining to the 2018 Mack GU813. Recalls are issued to address safety defects, and for commercial vehicles, these can sometimes relate to braking systems, steering components, or critical engine/powertrain elements. For long-term reliability, consistent and meticulous maintenance, including regular fluid changes, filter replacements, and inspections of the emissions system, is paramount. Neglecting these can significantly shorten the lifespan of crucial components and lead to more substantial repair bills.

How long will the 2018 Mack GU813 last?

The 2018 Mack GU813 is engineered for longevity, and it's not uncommon to see these trucks in service for well over 500,000 to over 1,000,000 miles, especially with diligent owner habits. The durability of Mack's heavy-duty chassis and drivetrains is a significant selling point. With consistent, high-quality maintenance, including regular fluid checks, filter changes, and prompt attention to any warning signs, these trucks can offer decades of service. However, prolonged use without proper care, particularly concerning the emissions system and critical lubrication points, can lead to accelerated wear on components like engines, transmissions, and axles, resulting in major overhauls. Over time, the robust build quality shines through, but the cost of maintaining these heavy-duty systems, especially post-warranty, is a factor.

What Technology & Safety Features are Included?

The 2018 Mack GU813 prioritizes functionality and driver focus over extensive infotainment and driver-assistance suites commonly found in consumer vehicles. Built-in tech is geared towards operational efficiency and safety in vocational settings. Standard safety features would include robust anti-lock braking systems (ABS), powerful hydraulic or air brakes, and durable construction designed to withstand rigorous use. Visibility is often enhanced through large windshields and strategically placed mirrors. While a high-end entertainment system is not a hallmark of this truck, basic amenities like an AM/FM radio, possibly with an auxiliary input or USB port, would be common. More advanced audio systems and connectivity options might have been available as factory or dealer-installed options. The primary focus for technology in the GU813 is on diagnostics and operational data. This could include features like a diagnostic port for engine and system monitoring, and potentially an onboard computer that provides information on fuel economy, trip data, and engine performance. Driver-assistance features are generally minimal compared to modern light-duty trucks. Electronic Stability Control (ESC) might be available on some configurations, especially those mandated by regulation or chosen for specific applications. Lane departure warnings or adaptive cruise control are unlikely to be standard or widely offered. The truck's design emphasizes a strong frame and safety cage construction. Optional features could include advanced telematics systems for fleet management, allowing for real-time tracking, driver behavior monitoring, and remote diagnostics. Some trucks may have been equipped with heated mirrors for improved visibility in adverse weather, air-ride seats for enhanced driver comfort during long shifts, and auxiliary lighting. Crash-test ratings are not typically conducted or published for heavy-duty vocational trucks like the Mack GU813 in the same manner as passenger vehicles. Their safety is evaluated based on structural integrity, braking performance, and compliance with commercial vehicle safety standards.

What Colors Options are Available?

We’re working on this section!
In the meantime, feel free to explore the other sections for more content.

2018 Mack GU813 Prices and Market Value

When new, the 2018 Mack GU813's price would have varied significantly based on its specific vocational configuration, engine choice, and any optional equipment, typically ranging from $100,000 to $200,000+. As a heavy-duty vocational truck, its depreciation curve differs from consumer vehicles. Initial depreciation can be substantial, but well-maintained units with low mileage for their age hold their value exceptionally well due to their inherent durability and the high cost of new replacements. The resale value is heavily influenced by factors such as engine hours, overall mileage, condition of the chassis and powertrain, the functionality of specialized vocational equipment (like a dump body or mixer), and overall maintenance history. Trucks used in demanding applications might see a steeper depreciation if heavily worn.

2018 Mack GU813 Cost of Ownership

Owning a 2018 Mack GU813 is a significant investment with considerable ongoing costs. Insurance premiums for commercial heavy-duty vehicles are generally high, reflecting the risk and value. Fuel costs are substantial due to the powerful diesel engines and the nature of vocational work; expect figures much lower than typical passenger cars. Maintenance and repair costs are also considerable. While built to last, specialized parts and labor for heavy-duty trucks are expensive. Routine maintenance is critical to avoid costly breakdowns. Overall, the GU813 is a costly vehicle to own and operate, but its economic viability comes from its immense work capacity and longevity when properly cared for, making the total cost of ownership justifiable for businesses.

2018 Mack GU813 Fuel Efficiency

Fuel Type Diesel
Fuel Capacity -
City Mileage -
Highway Mileage -

2018 Mack GU813 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

2018 Mack GU813 Insurance

Insurance for a 2018 Mack GU813 is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.

How Does the 2018 Mack GU813 Compare to Other Truck?

The 2018 Mack GU813 competes in the tough vocational truck segment against formidable rivals like the Kenworth T880/T800, Peterbilt 567/367, and International WorkStar. In terms of performance, the GU813's Mack MP engines offer robust power and torque, directly comparable to the offerings from its competitors. Mack is renowned for its durable drivetrains, often perceived as slightly more rugged in certain applications. Reliability is a strong suit for all these trucks, with each brand having a dedicated following built on years of service. However, specific engine and transmission choices within each model can influence long-term reliability. Mack's proprietary components can sometimes mean unique repair considerations. Features on the GU813 are typically utilitarian, focusing on operator efficiency and durability. Compared to its rivals, the interior might be perceived as more spartan by some, while others appreciate its no-nonsense approach. Kenworth and Peterbilt often offer slightly more refined interior options and a wider array of advanced electronic features or customization for specific vocational needs, though this can also come at a premium. International's WorkStar is a direct competitor, often praised for its ruggedness and suitability for extreme environments. Price-wise, these vocational trucks operate in a similar high-cost bracket. The GU813 is competitive, often positioned to offer strong value for its workhorse capabilities. Factors like engine choice, axle configurations, and chassis options will dictate the final price. When considering alternatives, the choice often comes down to brand loyalty, dealer support in a specific region, and specific vocational equipment integration. For instance, if a specific dump body manufacturer has a stronger partnership with Peterbilt, a Peterbilt might be preferred. If the primary concern is pure, unadulterated brute strength and a simpler, robust mechanical design, the Mack GU813 is an excellent choice. However, if cutting-edge technology, a more refined cab environment, or specific integrated vocational solutions are higher priorities, exploring the latest offerings from Kenworth or Peterbilt would be warranted. Ultimately, the GU813 stands as a solid, reliable choice, especially for those valuing Mack's legacy of toughness.

Final Verdict: Is the 2018 Mack GU813 a Good Truck?

The 2018 Mack GU813 is ideal for owner-operators and fleet managers in demanding vocational sectors like construction, heavy hauling, and waste management who prioritize brute strength, durability, and operational uptime above all else. It is absolutely worth buying for businesses that need a reliable workhorse designed for the toughest jobs, understanding that its appeal lies in its capability rather than luxury. Buying used is often the most pragmatic approach, as these trucks are built for high mileage. When purchasing, scrutinize engine hours, maintenance records, and the condition of any vocational equipment. While specific 'trims' are dictated by application, opting for a configuration with well-maintained emissions systems and robust powertrain components will ensure the best long-term value. It's a truck that repays diligent ownership with years of dedicated service.

2018 Mack GU813 Owner Reviews

0.00
Consumer Rating, Based on 0 Consumer Reviews
Overall rating
Cancel
Thank You for Your Review!

We truly appreciate the time and effort you took to share your experience with us.

Uh oh!

Something went wrong, please try again later.

Author Image
Jovan

Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.