Diesel trucks are known for their power, durability, and long lifespan. Whether you're in the market for a used diesel pickup or assessing the longevity of your current vehicle, understanding what constitutes "good mileage" is essential. Unlike gas-powered vehicles, diesel engines are built to endure more wear and tear, often going the extra mile—literally. But what exactly is a good mileage for a diesel truck?
What Is Considered High and Low Mileage for Diesel Trucks?
Diesel trucks are often driven long distances, especially when used for commercial hauling or towing. As a result, high mileage isn't always a red flag.
Low Mileage: Under 100,000 miles
Moderate Mileage: 100,000 to 200,000 miles
High Mileage: Over 200,000 miles
In general, diesel engines can last anywhere from 300,000 to 500,000 miles with proper maintenance. Some models even exceed 750,000 miles, especially heavy-duty ones like the Ford Super Duty, Dodge Ram HD, or Chevy Silverado HD.
Factors That Determine Good Mileage
1. Maintenance History
A well-maintained diesel truck with 200,000 miles can be a better investment than a poorly maintained one with 100,000. Look for:
Regular oil and filter changes
Transmission servicing
Fuel injector cleaning
Turbocharger checks
A full-service history can significantly increase a truck’s reliability regardless of its mileage.
2. Type of Usage
Was the truck used for highway driving or constant stop-and-go city traffic? Highway miles are generally easier on the engine. A truck used for hauling heavy loads or towing frequently might show more wear, even at lower mileage.
3. Engine Make and Model
Some diesel engines are known for their extraordinary lifespan. For example:
Cummins 6.7L Turbo Diesel – known for reliability and durability
Duramax 6.6L – excellent longevity with proper care
Power Stroke 7.3L – one of Ford’s most durable engines
Knowing the engine’s track record can help determine if its current mileage is “good.”
Read more: What Is Considered High Mileage For A Diesel Truck?
How to Assess Mileage in Context
Rather than focusing solely on the odometer reading, consider these key questions:
Has the truck been serviced regularly?
Is the transmission in good condition?
Are there signs of excessive rust or wear on the undercarriage?
Does the vehicle come with detailed maintenance records?
Also, consider the truck’s price relative to its mileage and condition. A diesel truck with 150,000 miles that’s been properly maintained might be a great deal.
Tips for Buying a High-Mileage Diesel Truck
If you’re considering a diesel truck with over 200,000 miles, keep these tips in mind:
Get a pre-purchase inspection: Hire a diesel mechanic to evaluate the engine, transmission, and turbo system.
Check for blow-by: This is a sign of engine wear and can indicate internal damage.
Test drive it thoroughly: Watch for delayed acceleration, black or blue smoke, and odd engine noises.
Review the VIN history: Look for accident reports, service records, and how many previous owners it had.
How Long Do Diesel Trucks Last?
With good care, many diesel trucks can last between 300,000 and 500,000 miles or more. Some fleet vehicles and commercial trucks are still running strong past the 600,000-mile mark. Longevity depends on usage, maintenance, and the quality of replacement parts.
Also read: Which Diesel Truck Gets The Best MPG?
Is It Better to Buy New or Used?
New diesel trucks come with warranties and the latest features but carry a higher upfront cost. Used trucks, particularly those with 100,000–150,000 miles and a solid service history, can offer excellent value. Just make sure to do your homework and get a full mechanical inspection.
FAQs
What is considered high mileage for a diesel truck?
Generally, anything over 200,000 miles is considered high mileage, but many diesel trucks can last well beyond that with proper maintenance.
Can a diesel truck last 500,000 miles?
Yes, with routine care and quality parts, diesel trucks can often reach 500,000 miles or more.
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