Business AcquisitionsNovember 2026 · 8 min read

Acquisition Due Diligence on Fleet Maintenance Liabilities

In plumbing, HVAC, electrical, pest control, and similar trades, the vehicle fleet is not a side asset. Trucks and vans carry the technicians, the tools, and the inventory that produce revenue. They are also a common place for costs to be deferred before a sale. A seller who postpones replacements and repairs can make recent earnings look stronger, leaving the buyer to fund the catch-up. Fleet diligence is about identifying that gap before price and terms are set.

Start with a complete, reconciled vehicle list

Ask for a list of every vehicle used in the business, with VIN, year, make, model, mileage, assigned technician, title holder, and whether it is owned, financed, or leased. Then reconcile it against three other sources: the fixed-asset register, insurance schedules, and registration records.

Mismatches are informative. A vehicle on the insurance policy but not in the asset register may be titled personally to the owner or a relative. A vehicle in the register but not on the road may be out of service. Personally titled vehicles used in the business need to be addressed explicitly in the purchase agreement, or they may not transfer at all.

  • Title holder and any liens for each vehicle
  • Loan or lease balances, payment amounts, and end dates
  • Lease return conditions and mileage limits
  • Whether each vehicle is included in the sale

Assess condition and remaining useful life

Mileage alone is a weak indicator. Duty cycle, upfit weight, idling time, and maintenance history all affect how much life is left. Request maintenance and repair records per vehicle for at least two to three years, and consider an independent inspection of the units that matter most.

From that, build a simple replacement schedule: which vehicles are likely to need replacing in each of the next few years, and at what estimated cost including upfitting (shelving, racks, ladder racks, and any specialty equipment). Upfit costs are easy to overlook and can be a meaningful share of the total.

Look for deferred maintenance in the numbers

Compare fleet repair and maintenance spending over several years with the size and age of the fleet. A sharp drop in the year or two before a sale, while the fleet is getting older, is a signal worth investigating. So is a pattern of vehicles being kept running with repeated large repairs rather than replaced.

Hypothetical example, for illustration only: a company with 12 vehicles spent an average of $48,000 a year on fleet repairs for three years, then $22,000 in the year before listing, while no new vehicles were purchased. The figures are invented. A pattern like that raises a direct question: was the work done, postponed, or recorded somewhere else?

Translate deferred costs into the deal

If recent earnings were achieved partly by not spending on the fleet, those earnings are overstated as a measure of what the business normally produces. A buyer can treat the gap in a few ways: adjust normalized earnings for a realistic annual fleet cost, reduce the price for identified near-term replacements, or negotiate a specific credit or holdback.

Replacement spending is usually capital expenditure rather than an operating expense, so it may not appear in profit figures at all. That is why it should be estimated separately and compared with the cash flow the business produces after debt service.

Insurance, safety, and compliance

Fleet risk is not only mechanical. Review the commercial auto policy, its limits, and several years of loss runs. Frequent claims, a recent large claim, or a pending lawsuit involving a vehicle can affect future premiums and coverage.

Ask how drivers are screened and monitored: motor vehicle record checks, driving policies, and any telematics. Depending on vehicle weight and how they are used, some fleets may also be subject to commercial vehicle regulations. Confirm the applicable requirements with qualified advisers rather than assuming they do not apply.

  • Commercial auto loss runs for at least three to five years
  • Open claims and any related litigation
  • Driver records and written vehicle-use policies
  • Telematics or GPS data, if used, on idle time and driving behavior

Fuel, tools, and inventory on the truck

Fuel is a significant operating cost and often runs through fuel cards. Review how cards are controlled and reconciled. Also clarify what is on each truck: company-owned tools and parts inventory are part of what is being purchased, while personally owned technician tools are not. A truck inventory count near closing helps avoid disputes.

Limitations

Fleet diligence produces estimates. Vehicle prices, upfit costs, interest rates, and repair needs change, and inspections cannot predict every failure. The purpose is to replace an unknown liability with a reasoned range and to make sure the price and terms reflect it. Legal, tax, and insurance questions should be reviewed with qualified professionals.

The takeaway

A tired fleet is a future cash requirement. Reconcile ownership, estimate near-term replacements, and price deferred maintenance into the deal before closing.

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This article is part of a broader set of subject pages covering business development, business acquisitions, and real estate investing. You can also read more about Simon Leizgold.