Truck Purchase Inspection Checklist

Absolutely. A professional CDL mechanic inspection costs $200-$500 and can reveal problems that save you $5,000-$20,000 in surprise repairs. Bring the truck to an independent shop — not the seller's recommended mechanic. If the seller refuses to allow an independent inspection, walk away.

Modern diesel engines (Cummins, Detroit, PACCAR) can last 750,000-1,000,000+ miles with proper maintenance. Mileage alone does not tell the story — a well-maintained truck with 800K miles can be a better buy than a neglected truck with 400K. Focus on maintenance records, oil analysis, and overall condition rather than odometer alone.

DPF/aftertreatment system issues ($3,000-$8,000), EGR cooler failure ($2,000-$4,000), transmission rebuild ($4,000-$8,000), clutch replacement ($2,000-$4,000), and AC compressor ($1,500-$3,000). Ask for service records on these specific components. If records are missing, assume the worst and factor repair costs into your offer.