Coops Carb Compliance LLC

Clean Truck Check tester in Paso Robles, CA (San Luis Obispo County).

Coops Carb Compliance LLC appears on CARB's public list of credentialed Clean Truck Check testers. It lists mobile testing, OBD testing. Mobile testing means the tester can come to your yard or job site.

Location
6520 Long Hill Pl, Paso Robles, CA 93446
County
San Luis Obispo County
Phone
(620) 778-2208
Mobile testing
Yes — comes to your yard
OBD testing
Yes
Smoke opacity (non-OBD)
No
Motorhomes
No
Credentialed testers
1
Last verified

Call (620) 778-2208 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 Coops Carb Compliance LLC can test

The test CARB requires depends on the engine's fuel and model year. Based on the services Coops Carb Compliance LLC lists on CARB's tester list:

Your vehicleTest requiredThis tester
Diesel, model year 2013 or newerOBD scanYes
Alternative fuel (natural gas, propane), 2018 or newerOBD scanYes
Diesel, model year 2012 or older (no OBD)Smoke opacity test (SAE J1667) plus visual inspectionNot listed
California-registered motorhomeSame test as above by engine year, once a yearNot listed

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Dye's Mobile Diesel Smoke Testing in Paso Robles, about 1 mile away. See listing.

Clean Truck Check testers in San Luis Obispo County

Coops Carb Compliance LLC is one of 25 testing businesses in San Luis Obispo County on CARB's public tester list. 22 of them offer mobile testing and 9 do smoke opacity tests. In Paso Robles itself there are 5 listed businesses, 5 of them mobile. All testers in San Luis Obispo 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 Coops Carb Compliance LLC 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 Coops Carb Compliance LLC offer mobile Clean Truck Check testing?

Yes. Coops Carb Compliance LLC 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 Coops Carb Compliance LLC test a 2012 or older diesel truck?

Coops Carb Compliance LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is Dye's Mobile Diesel Smoke Testing (about 1 mile). Trucks from 2013 on get an OBD scan instead.

How much does Coops Carb Compliance LLC charge for a Clean Truck Check?

Coops Carb Compliance LLC has not published prices with us; call (620) 778-2208 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 Coops Carb Compliance LLC a CARB-credentialed tester?

Coops Carb Compliance LLC 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 Paso Robles

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.

Call (620) 778-2208