I work on small van and truck fleets, the 2 to 5 vehicle outfits: contractors, landscapers, detailers, couriers. Almost every breakdown I get called out for is one of five things, and four of them are cheap to prevent.

1. Batteries and charging. Short trips with the engine off and the liftgate, lights, and inverter running all day. The battery never fully recharges. A load test takes four minutes and tells you which van is going to fail on a Monday morning in the cold.

2. Brakes on loaded vehicles. A van at gross weight eats pads far faster than the same van empty. Owners still use the shop's 30,000 mile guess. Measure the pads instead of guessing.

3. Tire pressure and uneven wear. A set of tires is real money, and running them a few PSI low quietly burns fuel on every mile and wrecks the edges. Pressure checks are free and take two minutes per vehicle.

4. Oil intervals measured in months, not miles. Idling, towing, and stop-start work age oil faster than the sticker assumes. Go by hours and load, not the windshield reminder.

5. Small coolant and fluid leaks. The one that actually strands you. A seeping hose is a cheap part on a Tuesday and a tow plus a lost day if you wait until steam comes out of the hood.

Here's the math that matters. A van down for one day costs most of these owners a full day of billable work plus the tow and the rush-repair premium. Prevention is a fraction of that, and it happens on your schedule instead of the van's.

If you run a few work vehicles, do this today: write down every plate, current mileage, and the last date anyone touched each one. Most owners cannot fill that in, which is exactly why the surprises feel random. They aren't.

I do this on-site for fleets around my area on a monthly plan. But the checklist above is the actual work, so use it whether you hire anyone or not.