Engineered to be the most efficient 100-ton mechanical truck in the industry, the Cat® 777 makes it possible for you to haul more — for less. It combines best-in-class productivity and proven performance with high availability and increased fuel efficiency to deliver a low cost-per-ton and help you boost margins in even the toughest conditions.
By Caterpillar | Posted September 23, 2025
A number of features contribute to the high fuel efficiency of the Cat® 777, allowing you to get more done while spending less on fuel.
Economy Mode modifies engine maps to take advantage of steady grades and level ground, reducing power and fuel burn. Operators may choose an automatic adaptive Eco mode and driver-controlled configurable mode. Forced Economy mode configuration can be selected based on application needs.
Engine idle shutdown identifies when the truck is in park and idles for more than a preset time, initiating engine shutdown to conserve fuel. The auto neutral idle system reduces torque load when the engine is idling, further reducing fuel burn. Auto stall automatically warms up the system to bring the machine to operating temperature soon, reducing fuel consumption/emissions.
In addition, the speed limiting feature automatically and instantaneously selects the most fuel-efficient gear for the terrain based on the truck’s laden/unladen weight.
The Cat 777 delivers proven performance with fast cycle times, an outstanding power-to-weight ratio and class-leading payload capacity.
A key contributor to high productivity is the Advanced Productivity Electronic Control Strategy (APECS) transmission. APECS allows the machine to better utilize engine power and carry more torque through the shifts, producing faster cycle times, most noticeably on grades.
In addition, the transmission’s second-gear start helps skip first-gear engagement, improving cycle time, minimizing the number of shifts, and running the machine at an optimum speed from the starting point. The machine speed limit feature runs the machine at an optimal gear for the selected speed.
The 777 operator environment was designed to help operators work comfortably, confidently, efficiently and safely.
The cab interior is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers, switches, and gauges are positioned to maximize productivity and minimize fatigue. The Cat comfort seat uses full air suspension to smooth rough rides.
The integrated access ladder system and all access platforms are equipped with handrails designed for three points of contact at all times. Aggressive tread plate is installed on all step areas with illuminated access for night operation. Safety is enhanced with expanded rear visibility, with mirror packages on both sides of the truck. The optional Cat MineStar™ Detect system uses cameras and radar to monitor objects that appear within designated machine blind spots.
Integrated technologies such as Product Link™, Vital Information Management System (VIMS™) and truck payload management system (TPMS) give you the data you need to make the most of your investment in the 777.
ProductLink is a standard offering on the 777. It remotely tracks location, hours, fuel usage, diagnostic codes, idle time, and more to help you improve your productivity and lower your operating costs. Cellular connectivity comes standard; satellite connectivity is available.
VIMS is an optional technology that helps you proactively manage machine health and production. This user-friendly interface monitor allows operators to monitor real-time machine performance and operating data. It provides access to diagnostics, prognostic trends and production information such as payload, haul cycle times, segment times and fuel usage.
The optional TPMS features uses onboard sensors to indicate overloading and underloading to the operator. In addition, the tonne kilometer per hour/ton miles per hour (TKPH/TMPH) monitoring system monitors payload, speed and ambient temperature to calculate the best operating conditions for the truck’s tires and warns the operator when those parameters are exceeded.
The 777 continues the Caterpillar tradition of reliability and durability, with a tough frame designed to deal with twisting loads. The rugged suspension not only reduces stress on the machine’s structures, but it’s also highly durable itself, with components engineered for long life.
The Cat C32B engine is infused with features that improve life, such as integrated fuel lines (IFL) cylinder heads, dual sensor coolant protection (DSCP) system, delayed engine shutdown (DES), and engine low oil level sensor.
Enhanced serviceability contributes to the 777’s high uptime. Easy access to daily service points reduces time spent on regular maintenance procedures. Ground-level lockouts and breaker access make pre-service safety procedures quick and easy. The open frame design reduces removal and replacement time for major component.
And like all Cat machines, the 777 is supported by the global Cat dealer network. This one-of-a-kind, on-the-ground support network delivers expert service, integrated solutions, after-sales support, fast and efficient parts fulfilment, world-class rebuild and remanufacturing capabilities and more.