Peterbilt 579 vs. Peterbilt 389: Which Model Is Right for You?

Peterbilt 579 vs. Peterbilt 389: Which Model Is Right for You?

If you were to survey truck owners about whether they prefer the Peterbilt 579 or the Peterbilt 389, most would likely choose the 389. And that’s exactly why surveys don’t determine production numbers.

In terms of units sold, the Peterbilt 579 is the more popular heavy-duty truck.

When choosing between the Peterbilt 579 and Peterbilt 389, owner-operators and fleet owners must consider performance, comfort, fuel efficiency, and overall cost. Both models are iconic in their own way, but they serve different needs. In this guide, we’ll break down the key differences to help you make the best choice.

1. Overview of Peterbilt 579 vs. 389

Peterbilt 579 – Elegance in Efficiency

The 579 isn’t an ugly truck by any means, but its beauty lies in its efficiency and comfort.

• Aerodynamic design for fuel efficiency
• Lightweight build for better payload capacity
• Advanced driver comfort and technology
• Ideal for long-haul, short-haul, and fuel-conscious operations

Peterbilt 389 – The Mid-Century Modern Classic

The Peterbilt 389’s lineage spans generations, each model with different strengths and weaknesses but all carrying that classic Peterbilt style.

• Traditional long-nose styling with a powerful presence
• Heavier build with a durable chassis
• Strong resale value and customization options
• Preferred by owner-operators who prioritize looks and performance
• An excellent choice for long-haul and many construction applications

2. Fuel Efficiency & Aerodynamics

If fuel efficiency and aerodynamics are your priorities, the choice is easy: the 579 is your truck.

• The Peterbilt 579 is built for efficiency. Its aerodynamic cab design reduces drag, improving miles per gallon (MPG). With features like Predictive Cruise Control and optimized fairings, it’s a top choice for those looking to save on fuel costs.
• The Peterbilt 389, on the other hand, makes no attempt to hide its lack of aerodynamics and fuel efficiency.

While the MPG difference between the two is only 2-4 miles per gallon, in the trucking world, that margin can mean the difference between staying profitable and going broke.

The clear choice for fuel efficiency: Peterbilt 579

3. Comfort

• The Peterbilt 389 is a comfortable truck, but many long-haul drivers now prefer the Peterbilt 579 for its easy access and roomy, comfortable sleeper. Easy to drive and technologically advanced, the Peterbilt 579 is the clear winner in comfort.
• While the Peterbilt 389 has modern technology, its traditional cab layout is comfortable but doesn’t quite match the 579.

The clear choice for the modern driver experience: Peterbilt 579

4. Performance & Power

Both trucks offer powerful engine options with up to 605 horsepower, including the PACCAR MX-13 (510 HP) and Cummins X15 (605 HP).

• The Peterbilt 389 is built for power and performance, with its stronger frame and heavy-duty build making it popular among heavy-haul and vocational drivers.
• The 579, while powerful, is optimized for fuel-efficient highway hauling rather than extreme heavy-duty applications.

The clear choice for power and performance: Peterbilt 389

5. Resale Value & Customization

For many owner-operators, customization plays a huge role in choosing a truck. A truck needs to reflect their personality. For others, resale value is a crucial factor—they can’t afford to see their truck’s value plummet after a few years and several hundred thousand miles.

• Like the Peterbilt 359 and 379 before it, the Peterbilt 389 commands respect in the resale market. Pride of ownership is basically built into the product. Customization options like chrome stacks, custom interiors, and specialty paint jobs make it a favorite for those who want a unique truck.
• The Peterbilt 579 also does well in the resale market, making it popular among fleets. While customization is possible, it doesn’t receive the same level of enthusiasm as the 389 or the same tradition for resale value.

The clear choice for resale value and customization: Peterbilt 389

6. Maintenance & Operating Costs

There’s no real comparison between the two—it’s like comparing the maintenance costs of a Ferrari (Peterbilt 389) to a Toyota (Peterbilt 579).

The clear choice for lower operating costs: Peterbilt 579

Which Peterbilt Should You Choose?

• The Peterbilt 579: If you prioritize fuel efficiency, modern technology, and lower operating costs, consider the Pete 579.  The model 579 is the best choice for long-haul fleet operations.
• The Peterbilt 389: If you value classic styling, raw power, and strong resale value choose the Pete 389. The model 389 is ideal for owner-operators and heavy-haul trucking.

Both trucks have their strengths—your choice depends on your specific needs. If fuel efficiency and technology matter most, the 579 is the winner. If power, prestige, and customization are priorities, the 389 takes the crown.

Thinking About Buying a Peterbilt?

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