Comparative analysis of Caterpillar engines: C7, C9, C11, C13, C15, C16, C18, C27, C32

Caterpillar Engine Comparison Chart:

Engine Model Displacement Horsepower Torque Fuel Consumption Emissions Standard
C7 7.2 L 150-240 hp 475-800 lb-ft 10-14 mpg Tier 4 Final
C9 9.3 L 280-405 hp 1,150-1,450 lb-ft 8-12 mpg Tier 4 Final
C11 11.6 L 350-470 hp 1,450-1,850 lb-ft 7-10 mpg Tier 4 Final
C13 12.5 L 405-505 hp 1,650-2,050 lb-ft 7-9 mpg Tier 4 Final
C15 15.0 L 505-625 hp 1,750-2,400 lb-ft 6-8 mpg Tier 4 Final
C16 16.0 L 600-665 hp 2,150-2,400 lb-ft 6-7 mpg Tier 4 Final
C18 18.0 L 700-800 hp 2,500-3,000 lb-ft 5-6 mpg Tier 4 Final
C27 27.0 L 930-1,000 hp 3,500-4,000 lb-ft 4-5 mpg Tier 4 Final
C32 32.0 L 1,100-1,200 hp 4,000-4,500 lb-ft 4-5 mpg Tier 4 Final


As one of the most popular heavy-duty engines makers in the world, Caterpillar has unveiled a series of highly impressive, durable engines. Caterpillar has a variety of engines to suite many applications, from construction and mining to agriculture and transportation. This article provides a comparison of years, models and engines for the nine Caterpillar diesel engines that were announced to be serially manufactured in the mid-2000s: C7, C9, C11, C13, C15, C16, C18, C27, C32ANGES 16Unlike the production of gasoline engines until 1929-1945 in the form of four-stroke engines, the history of the Caterpillar diesel no start was preceded by the range of steam engines.

Comparative Analysis:

Engine Specifications:

The chart below details all of the important figures for each engine (displacement, hp, torque, fuel consumption, emissions standards). On both fronts, the C7 appears to be the smallest and least powerful engine, and the C32 is the largest and most powerful engine //-- cut me in on that factory -- so the final displacement figure should fall somewhere between those two engines.


PerformanceThe Performance: Cat engines are popular for its great performance. Even with its tiny size, the C7 can deliver a modest 150-240 horsepower and 475-800 lb-ft of torque. Further up the scale, the C9 delivers 280-405 horsepower and 1,150-1,450 lb-ft and the C11 pumps out 350-470 horsepower and 1,450-1,850 lb-ft. With the exception of the C13, C15, C16, all the tier engines gain power and torque over their Cat cousin, capping out with the C18 and a Category 3, or 700-800 horsepower and 2,500-3,000 lb-ft cum torque. The range topping C27 and C32 provide enough power for the toughest applications with 930-1,000hp and 3,500-4,000lb-ft of torque respectively.

Fuel Efficiency:

Not all engines are both as powerful and as fuel efficient as Caterpillar engines. The C7, also a 9.0-liter V-8-powered rig, is good for 10-14 mpg, and the larger engines are in the 6-8 mpg range. This performance is possible through the use of advanced engine technologies from Caterpillar that include common rail fuel delivery and variable valve timing.

Emissions Standards:

All Cat engines meet current emissions standards, including Tier 4 Final. This dedication to the environment is what guaranties that Caterpillar engines run clean and thus have minimal ecological effects.

Advantages and Disadvantages:

Caterpillar Diesel Engine Comparison: Pros and Cons


  • C7:
  • Advantages:
  • Small, lightweight design
  • Fuel-efficient
  • For smaller-app use cases
  • Disadvantages:
  • Scarcely any non-V8 torque and power
  • Limited applications
  • C9:
  • Advantages:
  • More power and torque than the C7
  • Fuel-efficient
  • Applicable to a broader set of use cases
  • Disadvantages:
  • You are looking at a more portly and admittedly larger alternative to the C7.
  • Not ideal for the most performance-hungry apps
  • C11:
  • Advantages:
  • More power and torque than smaller engines
  • Efficient and versatile
  • Applicable For a Range of Uses
  • Disadvantages:
  • It is larger and heavier than the C7 and C9
  • Higher initial cost
  • C13:
  • Advantages:
  • More power and more torque
  • Power rating notwithstanding, it is fuel-efficient.
  • Ideal for the toughest of the toughest applications
  • Disadvantages:
  • Bigger and heavier (than smaller engines)
  • High cost when compared with shorter models
  • C15:
  • Advantages:
  • High power and torque output for high demanding applications
  • Decent performance for the power
  • Reliable and durable
  • Disadvantages:
  • May not be suitable for all applications due to its big size and weight.
  • Higher initial cost
  • C16:
  • Advantages:
  • Massive amounts of Pull and Torque to tackle the most epic of duties
  • Good power for what it is
  • Durable and reliable
  • Disadvantages:
  • Applications may be limited by unwieldy size and weight
  • Significant upfront cost
  • C18:
  • Advantages:
  • Max power, torque for biggest tasks
  • Good for the power it makes
  • Reliable and durable
  • Disadvantages:
  • Gigantic and heavy, restricted use cases
  • Most expensive to buy out of the engines compared
  • C27:
  • Advantages:
  • Extreme power and torque for serious applications
  • It is decently fast for its HP
  • Built to last and always dependable
  • Disadvantages:
  • Bulky and heavy - difficult to use in some scenarios
  • Very high initial cost
  • C32:
  • Advantages:
  • Best-in-Class Horsepower and Torque1 for the Toughest Jobs
  • It is surprisingly efficient for a power assist
  • Built for Unmatched Durability And Reliability
  • Disadvantages:
  • Applications are limited by size and weight on the MGMAgetSingleton


Selecting the perfect Caterpillar Engine comes down to the application and the needs of the application. The C7 or C9 would be great choices for lighter-duty applications where fuel efficiency are the main concerns. For higher demand applications, the C11, C13 and C15 engines may be more suited. For extreme power demands on heavy-duty applications, the C16, C18, C27 or C32 may be a consideration.

User Reviews:

Caterpillar engines receive the highest ratings from users for push clarity, quality and performance. The power of choiceA big like is good selection in power offerings to fit a variety of applications. Another common point of praise for Caterpillar engines is their fuel efficiency, often cited favorably in the comments of users who have been tight with cash.

Expert Opinions:

Caterpillar is also acknowledged by trade experts such as this example as among the best in the business in terms of manufacturing top notch engines. They praised Caterpillar for its emphasis on innovative advancements and technology. Caterpillar is also able to provide exceptional customer support... many experts are impressed with the customer support we offer.

Noregon JPRO Professional Diagnostic

What is the Noregon JPRO Professional Diagnostic Software Noregon JPRO is a professional tool for diagnosing and servicing Cat machinery and engines. This will give technicians the ability to troubleshoot, view engine parameters, and update software. This software is often the top choice for many users because of its ease of use and extensive diagnostics features.


From compact, fuel-efficient models to the most powerful engines for the most demanding applications, Caterpillar has a full range of engines to drive your success. Globally accepted, Caterpillar engines are one of the most reliable, durable, and high-power-performing machines which are preferred by almost every user at the international market. JPRO Professional Diagnostic JPRO is the #1 in-shop diagnostic and repair solution used by today's major fleets and independent shops.Noregon JPRO includes support for following Caterpillar systems: Exhaust Gas Recirculation After Treatment Water-in-fuel System VDO Def System Cam Sensor Fuel System INJ Actuation Pressure Control Valve Valve Cover Pressure Injection Actuation Pressure System Response Pressure Time System Stat PTO Shutdown Timer Engine Brake Air Inlet Calibration Actuation Pressure Governor Injection Trim Injector Trim Integration Time Fuel Rack Actuation Time Load Response Gov.

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