Mobile Fleet Test
Clean Truck Check tester in Ontario, CA (San Bernardino County).
- Mobile testing
- OBD test
- Motorhomes
Mobile Fleet Test appears on CARB's public list of credentialed Clean Truck Check testers. It lists mobile testing, OBD testing, motorhome testing. Mobile testing means the tester can come to your yard or job site.
- Location
- 1276 E Flora St, Ontario, CA 91764
- County
- San Bernardino County
- Phone
- (909) 503-2811
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- No
- Motorhomes
- Yes
- Credentialed testers
- 1
- Last verified
Call (909) 503-2811 Open in Google Maps
Before you call
- Have your VIN, odometer reading and plate number ready.
- Your vehicle must be registered in CTC-VIS and the annual compliance fee paid; the tester submits the result to CARB.
- Ask for the price per vehicle and any mobile trip fee. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).
Which trucks Mobile Fleet Test can test
The test CARB requires depends on the engine's fuel and model year. Based on the services Mobile Fleet Test lists on CARB's tester list:
| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |
For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Andrew Gallegos in Ontario, about 1 mile away. See listing.
Clean Truck Check testers in San Bernardino County
Mobile Fleet Test is one of 277 testing businesses in San Bernardino County on CARB's public tester list. 243 of them offer mobile testing and 98 do smoke opacity tests. In Ontario itself there are 31 listed businesses, 30 of them mobile. All testers in San Bernardino County.
When your truck is due
Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the deadline guide. You can test up to 90 days before a deadline. Get a free email reminder before each one.
How to check a tester's credential
CARB publishes its Clean Truck Check tester list, where Mobile Fleet Test appears as of November 1, 2026. Listing there is optional, so a missing name does not always mean a tester is not credentialed. After the test, check that the passing result shows for your vehicle in CTC-VIS; that is what counts for compliance.
Frequently asked questions
Does Mobile Fleet Test offer mobile Clean Truck Check testing?
Yes. Mobile Fleet Test says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.
Can Mobile Fleet Test test a 2012 or older diesel truck?
Mobile Fleet Test does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is Andrew Gallegos (about 1 mile). Trucks from 2013 on get an OBD scan instead.
How much does Mobile Fleet Test charge for a Clean Truck Check?
Mobile Fleet Test has not published prices with us; call (909) 503-2811 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the cost guide.
Is Mobile Fleet Test a CARB-credentialed tester?
Mobile Fleet Test appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.
Other testers near Ontario
-
Andrew Gallegos
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Cmax Commercial maintenance
- Mobile testing
- OBD test
-
Mobile 2u Fleet Service LLC
- Mobile testing
- OBD test
-
MVPS Consultants
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
SoCal Clean Truck Check Llc
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Center Lane Transportation, LLC
- Mobile testing
- OBD test
- Motorhomes
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.