Peterbilt 579: Overview and Characteristics of the American Truck

When we speak about American trucks, it is impossible not to mention the Peterbilt 579. The model was created in a particular EPIQ variant, which confirms its status as an economical workhorse. Indeed, according to experts and experience, vehicle 579 saves at least 14% of fuel, which is a good indicator. In this blog, we would like to talk about the appearance and technical features of the car.

History and origins

Peterbilt began operations in 1939 and has been one of the most trusted truck manufacturers ever since. For over 80 years, an enterprise has been building special-purpose vehicles that stand the test of time.

After World War II, the company introduced the 350 to show off a custom design with a bubble nose and a cab over the engine.

In 1986, the company created one of the most iconic models in history with the index 379, which became the most popular truck ever.

In the 90s, Peterbilt actively used experience and craftsmanship to enter the medium truck market by presenting model 330.

The year 2000 was marked by the introduction of the 386. It is the first product to be recognized by the EPA as environmentally friendly.

In 2012, after five years of work, Peterbilt specialists presented the most successful truck in its history, which received an index of 579.

Peterbilt's сore сcorporate values are:

Constant innovation: the company offers advanced trucks that guarantee maximum performance.

Customized solutions: each Peterbilt product can be customized to individual customer needs through aftermarket projects.

Unique craftsmanship: an enterprise manufactures the most reliable vehicles in the industry, built to the highest quality standards.

Peterbilt's main facilities are located in Denton, Texas. The company offers highway, vocational, and medium-duty vehicles that provide value to owners and bring pride to drivers. These trucks have received the support of the most extensive after-sales service program in specialized dealerships.

Design and construction

At first sight of the Peterbilt 579, we immediately notice the streamlined design of the front end. However, it is still a recognizable brand vehicle with plenty of classic styling cues that appeal to truck enthusiasts. The most visible element is the modern bonnet made of a lightweight polymer material called Metton, which is highly resistant to damage and minimal in thickness. Peterbilt's "bird" branding is prominently displayed on top of the robust stainless-steel radiator. The side accents, low, slim fenders, and sculpted "valleys" near the body echo the unique style of the brand's vintage pickups.

The manufacturer achieved a luxurious appearance through cutting-edge (optional) LED headlights, a three-piece bumper, and thoughtful fog lamps. The front collision avoidance radar cover is seamlessly integrated into the bumper, and the fog lights work well with the high beams. Rearview Lighting is one of the latest features added at the request of drivers during the design phase; it illuminates the bumpers to make it easier to turn at night.

Continuing the inspection of the car, you can see the modern tandem axle fairings, low front choke, flexible lower-body skirting, closed structures, and no-tool chassis fairing. These aerodynamic features increase the fuel efficiency of the new model.

Description of the cab

Trucks of the 579 range can be equipped with several types of cabs: a short Single Cab for working on short routes and a spacious Sleeper Cab with a high roof, which is paired with a sleeping block. The sleeping section of the Peterbilt 579 is illuminated by LED lighting, with a built-in entertainment center equipped with a 32-inch screen, batteries, and multiple outlets.

The sleeping part received several other features: a solid retractable workplace, storage compartments, and a high-quality mattress over 2 meters long. The raised bed provides quick access to the heating, ventilation, and air conditioning system. By the way, the owner may dismantle a comfortable sleeping compartment with a length of 1600 mm if necessary.

At the driver's workplace, everything you need is at hand. There are a lot of functions, as in other models, but many devices have been replaced by one large screen with a central combination of parameters. The 5-inch LCD provides engine speed data, tips on selecting the optimal gear to achieve maximum fuel economy, and secondary instrument data. On the wide center console is an additional screen - SmartNav, which displays GPS maps. It also allows you to work with telephone, Internet, and navigator.

Comfortable seating is a Peterbilt priority. The standard driver's seat provides good back support thanks to the wide cushion. Customers can opt for the LX seat, which features dual-chamber lumbar support and adjustable side bolsters.

The instrument panel is made of plastic material that is soft to the touch and looks. It is equipped with a pull-out table and a spacious glove compartment. By default, the truck receives a four-spoke Standard Wheel, but at the client's request, you can install a Premium Wheel with genuine leather trim and built-in audio and cruise control keys. The manufacturer considered users' wishes and added a device to the Peterbilt 579 that allows you to change the position of the pedals and the effort applied to them. The comfort seat Evolution ST, which is included in the basic package, can be supplemented with heating on request.

Model updates

Since its inception in 2012, the road flagship Peterbilt 579 has undergone specific changes:

In 2014, the manufacturer added the EPIQ hyper aerodynamic package.

In 2018, an extra bed UltraLoft appeared.

In 2022, the company began equipping its vehicles with the latest Paccar TX-18 and TX-18 Pro transmissions. The truck received new engine mounts with acoustic adjustment in the same year, providing a smoother and quieter ride.

According to Peterbilt's marketing director Jacob White, the new Peterbilt 579 is the most advanced model the company has ever produced.

Engine and transmission

The Peterbilt 579 is equipped with a reliable engine that delivers significant power and low weight to save fuel. There are such options for motors for a truck:

PACCAR MX-13: Offers a variety of power ratings up to 500 horsepower and 1,850 pound-feet of torque rating

PACCAR MX-11: Develops up to 430 horsepower and 1,550 pound-feet of torque.

Cummins ISX15: This is the leader in minimum fuel consumption, which reaches power from 400 to 600 horsepower and torque up to 1,450 pound-feet.

Cummins Westport ISX12: 320 to 400 horsepower and up to 1,450 pound-feet of torque.

Cummins systems meet EPA and CARB emission standards.

The engines are compatible with Eaton manual or automatic transmissions and PACCAR 12 Speed.

The 12-speed PACCAR transmission with, rated at 1,850 lb. ft. of torque and 110,000 GCVW and featuring classic eight-bolt PTO capability, is a non-manual system with automated parts. It was designed as an automatic transmission, so its name has no AMT abbreviation.

Eliminating an oil cooler, lightweight aluminum construction, and an efficient lubrication system requiring no more than 16 pints of oil reduce the weight of the Paccar transmission, making it one of the lightest automated units on the market. The manufacturer added an industry-unique oil pressure sensor to the design instead of a sensor that only monitored temperature. The truck's power will be reduced if the sensor gives a low fluid warning.

The Eaton gearbox is an efficient solution for demanding operating conditions. A precision lubrication system reduces oil churning and overall energy loss by 30%, often experienced by standard transmissions. Less power produces less heat, eliminating the need for special coolers, piping, and fittings, which means the system requires minimal maintenance.

Eaton's advanced design reduces weight without sacrificing quality using aluminum shift elements instead of cast iron. The absence of an oil cooler provides additional weight savings. The presence of an oil-level sight glass allows you to check the oil several times faster than before.

Load capacity and performance

The vehicle is capable of carrying loads weighing up to 80,000 pounds. There is no shortage of storage space on the Peterbilt 579 truck. The manufacturer supplies such a model with significant storage in the side and rear walls and a lifting place to sleep. The truck has oversized wardrobe closets and space for a medium-sized refrigerator. There is also a retractable workplace that makes the driver's work as comfortable as possible.

All 579 trucks have received LED lighting, which increases the efficiency and productivity of transport.

Technologies and innovations

The quality Peterbilt 579 offers more technology than any other truck. The control of the trailer's critical systems ensures safe operation, while the innovative 15" sensor package provides essential data and lets you choose a convenient configuration.

Buttons and switches on the steering wheel allow the driver to use the adaptive cruise control functions, select sensors, control menus, and the stereo system. Peterbilt SmartNav technology also has a voice recognition system and Bluetooth, allowing you to send commands without hand. The rear seat in the cab can be equipped with a 32-inch screen.

Peterbilt specialists have tried to make the truck as quiet and comfortable as possible for driving at high speed.

Customers can order the Peterbilt 579 equipped with the Bendix Wingman Advanced collision avoidance system as standard equipment. Extensive safety features include stationary object braking, lane departure warning, and speed limit sign analysis.

The main advantages of the model

The modern Peterbilt 579 is full of custom features and improvements compared to the manufacturer's previous models. Below are the main advantages of the truck:

Modern aerodynamic design improves fuel efficiency.

The custom engine/transmission combination delivers negligible fuel economy, averaging 8.7 mpg.

The engine is designed to operate within 200 rpm of maximum performance for any drawbar weight.

Fairings made of durable plastic do not require special maintenance.

Cabins are built from modern materials, which means they are better insulated. They are easier to maintain a comfortable temperature; you will hear less noise and feel relaxed on the trip.

Availability of emergency exit through storage area access door.

Chic design with a wrapped steering wheel.

Installation of a self-leveling seat for the driver.

The brand produces beautiful and iconic trucks that participate in exhibitions and are liked by the public.

A vehicle with history because the Peterbilt is often compared to the Harley Davidson for a reason. There is something special about these trucks, and people want to keep driving them. This brand has played a massive role in the personal stories of drivers.

Considering the above, the Peterbilt 579 is the optimal work semi-trailer if you need reliable short or long-distance hauling.

The primary disadvantages of the model

In June 2023, Paccar recalled some 2022-23 Peterbilt 579 trucks equipped with MX-13 engines and 160-amp alternators, according to the National Highway Traffic Safety Administration. During the assembly, the specialists laid fasteners with a head on the outer part of the frame rail. It may rub and damage the alternator-positive cable, increasing the fire risk. Such a vehicle also has other disadvantages:

Relatively high purchase and maintenance costs.

Fewer engine and transmission options than some competitors.

Vehicle owners should maintain their vehicles regularly and drive at the manufacturer's recommended speed to maximize fuel economy. In addition, the cargo should be as light as possible.

Despite some shortcomings of the car, its durability is impressive. Their frames are made from quality materials, proving their durability even in extreme conditions.

Conclusion

The Peterbilt 579 truck guarantees significant fuel economy and impressive torque, making it ideal for hauling heavy loads. It also has an upgraded climate control system, so the driver will feel comfortable on the road even in extreme temperatures. This truck is a pleasure to drive even on long journeys; it represents a big step forward for Peterbilt 579

Despite all the advantages of Peterbilt 579 trucks, they also have disadvantages. For example, in 2022, a whole batch of vehicles was found with the positive alternator cable placed incorrectly, increasing the fire risk. In addition, the cost of purchase and maintenance is relatively high, although parts can be purchased at any dealership. It is vital to track the weight of loads to maintain fuel economy.