There's no single right answer to how often a fleet should be washed. A dealer lot full of new cars, a line of delivery vans and a yard of dump trucks get dirty in completely different ways. But there is a right answer for your fleet, and it usually comes down to four things: what the vehicles do, what they look like when they're dirty, who sees them, and the weather.
This guide walks through each one and ends with starting points you can use to pick a schedule.
1. What the vehicles do all day
The biggest factor is the kind of dirt your vehicles pick up.
- Road film is the gray, oily haze that builds up on anything that drives on highways: exhaust soot, tire dust, oil mist and grime kicked up by other traffic. Box trucks, vans and semis collect it every day. It doesn't rinse off with plain water; it needs soap chemistry to break it down.
- Dust and pollen settle on vehicles that mostly sit still, like dealer inventory. They look bad quickly but come off easily.
- Mud and clay stick to construction trucks and equipment. North Texas clay turns into a sticky paste when it's wet and bakes on hard when it dries.
- Concrete builds up on ready-mix trucks with every load and has to be chemically softened before it will come off.
The heavier the dirt, the more it costs to let it build up. Road film that sits for a month is harder to remove than road film from last week. Dried clay packed around an axle is a lot more work than fresh mud. Washing more often usually means each wash is faster and easier.
2. What the vehicles look like
White box trucks and light-colored vans show dirt fast. Dark vans hide dust but show water spots. Big, flat panels with a logo and phone number are the worst: grime on a 26 ft box is visible from across a parking lot.
If your vehicles carry your branding, they're working as advertising every time they're on the road. A dirty truck sends the opposite message from the one you're paying the graphics shop for.
3. Who sees them
Think about who looks at your vehicles and how closely:
- Customers at their door (delivery and service fleets) see the van up close.
- Shoppers on a dealer lot look at every car, often before they talk to anyone.
- Other drivers and the public see long-haul trucks and construction fleets mostly from a distance.
- Your own mechanics and drivers need to see the vehicle clearly during inspections. Leaks, cracks, loose parts and worn tires are easier to spot on a clean vehicle.
The more customer-facing the fleet, the more often it should be washed.
4. The weather
North Texas weather changes the math through the year:
- Spring pollen coats everything in yellow-green dust. Dealer lots and light-colored fleets often need extra washes from March through May.
- Storm season brings rain that leaves spots and splash-back on vehicles, and mud on job sites. See our guide to Texas pollen and storm season.
- Summer heat makes soap dry too fast in direct sun, which is why night and early-morning washes work best in the hottest months.
- Freezing days in winter mean washes get rescheduled, because water freezes on vehicles and pavement.
Starting points by fleet type
These are starting points, not rules. Adjust them after a few weeks based on how the vehicles actually look.
| Fleet type | Typical starting schedule | Why |
|---|---|---|
| Delivery vans | Weekly | Customer-facing, heavy daily mileage |
| Box trucks | Weekly or every 2 weeks | Large branded panels, road film builds fast |
| Semi tractors and trailers | Every 2 weeks to monthly | Depends on routes and how much the trucks are seen |
| Dealer lot inventory | Weekly, plus extras after rain and during pollen season | Every car is on display |
| Dump trucks and construction | Weekly during wet periods, less when dry | Mud builds up and hides problems |
| Ready-mix trucks | Frequent enough to keep concrete from building up | Buildup gets harder and more expensive to remove |
How frequency affects price
With most fleet-washing companies, including us, a recurring plan costs less per visit than a one-time wash, because a regular route is more efficient to run and each wash is easier. Our rate card gives the biggest discount to weekly plans, a smaller one to every-two-weeks and twice-a-month plans, and a small one to monthly plans. You can see how it works on our pricing page.
Frequency also affects how dirty the vehicles get between washes. That can change the service level your fleet needs. A box truck washed weekly usually needs a standard road-film wash. The same truck washed every two months may need more work each time.
Picking a schedule
- Start with the schedule from the table above that matches most of your fleet.
- Look at the vehicles right before each wash for the first month. If they look fine, try a longer interval. If they look rough, shorten it.
- Add extra washes around the weather: after big storms, and during pollen season for lots and light-colored vehicles.
- Revisit the schedule each season.
If you'd like a recommendation for your fleet, request a free quote. Tell us how many vehicles you have, what types, and how dirty they usually get, and we'll suggest a schedule with the price. New accounts get their first wash free for up to 5 vehicles.
Related: box truck washing, delivery van fleet washing, and fleet washing in Frisco, Plano and McKinney.