Maggiora Bro Drilling
Clean Truck Check tester in Gilroy, CA (Santa Clara County).
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Maggiora Bro Drilling appears on CARB's public list of credentialed Clean Truck Check testers with 2 credentialed testers at this business. It lists mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Mobile testing means the tester can come to your yard or job site.
- Location
- Gilroy, CA 95020
- County
- Santa Clara County
- Phone
- (669) 469-9223
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- Yes
- Motorhomes
- Yes
- Credentialed testers
- 2
- Last verified
Call (669) 469-9223 Open in Google Maps
The street address is not published for this listing (mobile or home-based tester). Call to arrange the test.
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 Maggiora Bro Drilling can test
The test CARB requires depends on the engine's fuel and model year. Based on the services Maggiora Bro Drilling 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |
Clean Truck Check testers in Santa Clara County
Maggiora Bro Drilling is one of 79 testing businesses in Santa Clara County on CARB's public tester list. 67 of them offer mobile testing and 27 do smoke opacity tests. In Gilroy itself there are 13 listed businesses, 10 of them mobile. All testers in Santa Clara 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 Maggiora Bro Drilling 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 Maggiora Bro Drilling offer mobile Clean Truck Check testing?
Yes. Maggiora Bro Drilling 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 Maggiora Bro Drilling test a 2012 or older diesel truck?
Yes. Maggiora Bro Drilling lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See OBD vs smoke opacity.
How much does Maggiora Bro Drilling charge for a Clean Truck Check?
Maggiora Bro Drilling has not published prices with us; call (669) 469-9223 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 Maggiora Bro Drilling a CARB-credentialed tester?
Maggiora Bro Drilling appears on CARB's public Clean Truck Check tester list with 2 credentialed testers, 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 Gilroy
-
B&L Truck and Tractor Repair
- Mobile testing
- OBD test
- Motorhomes
-
Cruz Tire & Truck Repair
- Mobile testing
- OBD test
-
Dhillon CARB Testing
- Mobile testing
- OBD test
-
Mateo Huerta
- Mobile testing
- OBD test
-
Mosher Equipment Services LLC
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Premier Diesel LLC
- OBD test
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.