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If you’re in the market for a used commercial truck, you already know the stakes are high. New commercial trucks can cost anywhere from $80,000 to over $150,000, depending on the type and configuration. That’s a serious chunk of capital, especially for small and mid-sized businesses trying to grow without breaking the bank.

Buying used isn’t about taking chances. It’s about making smarter moves. If you’ve ever bought a lemon, you know the pain—unreliable performance, hidden maintenance issues, and downtime that costs more than the truck itself.

So, how do you know when a used truck is actually worth the money? Let’s break it down step by step.

1. Clear, Documented Maintenance History

The first sign of a smart buy? Records. You want a truck with a full, well-organized maintenance log. This should include:

• Regular oil changes
• Brake service
• Transmission checks
• Any major repairs or part replacements

A truck without records is a red flag. Don’t rely on verbal claims. Ask for documentation. For used bucket trucks, confirm records of boom inspections and hydraulic service. These aren’t just routine—they’re mandatory for safety.

2. Low Engine Hours (Not Just Low Mileage)

Mileage isn’t everything. A truck might have 40,000 miles but thousands of engine hours from idling at job sites. Engine hours show actual usage.

Here’s a tip:

• Under 15,000 engine hours is generally acceptable for diesel trucks.
• Under 10,000 hours is even better for lighter-duty work.

3. Minimal Signs of Frame Rust or Structural Corrosion

Surface rust? Normal. Deep frame rust or signs of salt damage? Walk away. Use a flashlight to inspect the undercarriage, frame rails, and suspension components.

Especially for sweeper trucks and municipal-use vehicles, road salt can cause early decay. Look for:

• Flaking metal
• Rust bubbles
• Fresh paint hides corrosion

A clean chassis usually means the truck was stored properly and used in less harsh environments.

Buy street sweeper trucks for stable work.

4. Tight, Noise-Free Suspension and Steering

Take the truck for a test drive. Listen carefully.

• Clunks, rattles, or excessive play in the steering wheel are warning signs.
• A bouncing or uneven ride could mean worn-out shocks or leaf springs.

This matters most when you’re buying used bucket trucks or crane trucks, where stability is key. Loose suspension means the truck can’t support load-bearing tasks safely.

5. Hydraulics in Solid Working Condition

This is where many people get burned. Don’t assume the boom, digger, or vacuum system works just because the engine runs fine. Test the hydraulics under load if possible.

For example:

• Used vacuum trucks should build proper suction and pressure.
• Used hydro excavation trucks for sale must have functional water and vacuum systems with no leaks.
• Look for fresh hoses, no fluid leaks, and responsive controls.

If the seller won’t let you test it, that’s your answer.

6. Valid DOT Inspection or Certification

If the truck recently passed a Department of Transportation (DOT) inspection, that’s a good sign. It means someone checked it for road worthiness, including:

• Lighting
• Tires
• Brakes
• Suspension
• Emergency equipment

Don’t settle for “passed inspection last year.” DOT certification should be recent—ideally within the last 12 months.

Buy Top-Quality Used Commercial Trucks

At Big Truck & Equipment Sales, we’ve helped customers for over 20 years find the right pre-owned trucks that perform like new. From used bucket trucks in NM to vacuum trucks for sale in CA, crane trucks, and street sweepers, our inventory for Washington, Texas, Arizona, and other states is clean, low-mileage, and work-ready.

If you’re serious about getting a truck that’s built to last, without the new-truck price tag, we have your back. Let us help you make your next investment one you can count on. Contact us now.