Mobile Clean Truck Check in Sonoma County

Santa Rosa • Petaluma • Sonoma

CARB-certified diesel smog testing at your yard, jobsite, or ranch — anywhere in Sonoma County.

Locally owned, based in the North Bay. You don't move the truck. We move the shop.

Testing Built Around How Sonoma County Actually Works

Sonoma County runs on trucks. Contractors and municipal fleets out of Santa Rosa, ag haulers and dairy trucks around Petaluma, vineyard and winery equipment through the Sonoma Valley, and everything moving up and down 101 and Highway 12 in between.

None of that work has a spare half-day to send a truck and a driver to a testing station and wait in line for a 20-minute inspection.

So we don't ask you to. I bring CARB-certified equipment to your location anywhere in Sonoma County, run the Clean Truck Check in 15 to 20 minutes, and submit the result directly to CTC-VIS before I leave. One truck or a whole yard — the testing happens where the truck already is.

What You Get

  • We come to your Sonoma County yard
  • CARB-certified and fully credentialed
  • 15-20 minute inspections
  • Results submitted straight to CTC-VIS
  • Same-day and same-week scheduling
  • Fleet discounts for 3+ trucks

Where We Test in Sonoma County

Same price, same turnaround, from Petaluma to Santa Rosa.

Santa Rosa

  • Construction, paving, and utility fleets
  • Airport Business Park and Santa Rosa Ave corridors
  • Roll-off, dump, and service trucks
  • Diesel smog Santa Rosa, done at your yard

Petaluma

  • Ag, dairy, and feed haulers
  • North McDowell and Lakeville industrial areas
  • Freight and distribution running the 101 corridor
  • Clean truck check Petaluma without the downtime

Sonoma

  • Winery, vineyard, and estate fleets
  • Sonoma Valley landscape and property crews
  • Highway 12 contractors and haulers
  • CARB testing Sonoma at the property

Rohnert Park & Cotati

  • Mid-county fleets between Santa Rosa and Petaluma
  • Contractor and service yards off 101
  • Easy to bundle with a same-day Petaluma stop
  • Same $80 per truck

Glen Ellen & Kenwood

  • Sonoma Valley wineries and ranches
  • Water trucks, tractors on trailers, crew rigs
  • Short hop for us from Napa — no route surcharge
  • Fleet days for neighboring properties

Fleets & Winery Operations

Transparent Pricing

First Truck

$110

$30 Travel + $80 Test

Additional Trucks

$80

Per truck, same visit

Best Value

Fleet Discount

$80/ea

3+ trucks: Travel fee waived

Running a yard in Santa Rosa, Petaluma, or Sonoma? If you have 3 or more trucks at one location, the $30 travel fee is waived entirely — just $80 per truck. That number is posted here because you shouldn't have to call and ask what a test costs.

Local, Not On a Route

A lot of the mobile testers working Sonoma County drive in from hours away. They run a route, they show up when the route brings them through, and if you miss that window you wait for the next pass. Ask what it costs and you get "call for a quote."

We're locally owned and operated, based right here in the North Bay. Santa Rosa, Petaluma, and Sonoma aren't a long-haul detour for us — they're neighbors. That's why we can offer same-day and same-week appointments instead of "next month," and why the price is printed on this page instead of quoted over the phone.

It also means a failed truck isn't a four-week problem. We come back and retest inside your 90-day window, and you're talking to the same person the whole time.

Local vs. Route-Based Testers

  • Based in the North Bay, not hours away
  • Same-day and same-week appointments
  • $80 per truck, posted — no call-for-quote
  • $30 travel fee waived at 3+ trucks
  • Fast retest if a truck fails
  • You talk to the person doing the test

Know Your Deadline

2026: Twice a Year

  • Semi-annual testing for most non-agricultural vehicles
  • Two tests per year, six months apart
  • Deadlines listed in your CTC-VIS account

The 90-Day Window

  • Passing tests can be submitted 90 days early
  • Room to repair and retest if you fail
  • Waiting until the deadline leaves no margin

October 2027: Quarterly

  • OBD-equipped trucks move to four tests per year
  • Older opacity-tested engines stay semi-annual
  • Fleets with a tester lined up feel it far less

Schedule Your Sonoma County Test

Fill out the form below and we'll get back to you promptly

Sonoma County Questions

What Sonoma County fleet owners and owner-operators ask most.

All three, plus everything in between. We test on-site in Santa Rosa, Petaluma, and Sonoma, along with Rohnert Park, Cotati, Glen Ellen, and Kenwood. We're fully mobile — we come to your yard, jobsite, or ranch, and your truck never leaves the property.

$80 per truck plus a flat $30 travel fee for the visit. With three or more trucks at one location the travel fee is waived — $80 per truck, full stop. The price in Santa Rosa is the same as the price in Sonoma. No call-for-quote, no distance surcharge.

Usually the same week, and often the same day when a slot is open. We're locally owned and based in the North Bay, so Sonoma County is a short drive — not a stop on a long-distance route that only comes through once a month.

This is set by the engine model year, not the vehicle model year — and they're often a year apart. Diesel engines from 2013 and newer (and alternative-fuel engines from 2018 and newer) take an OBD scan, which is what we perform. Older engines require a J1667 smoke opacity test. Check the emissions control label on the engine, and if you're not sure, call and we'll sort it out together.

Up to 90 days before your compliance deadline. That window exists for a reason: if the truck fails, you still have time to make the repair and retest before the deadline hits. Testing on the last week is how fleets end up with registration holds. Book early — it costs the same.