Capital City Diesel Insp.

Clean Truck Check tester in Sacramento, CA (Sacramento County).

Capital City Diesel Insp. appears on CARB's public list of credentialed Clean Truck Check testers. 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
6580 Asher Ln, Sacramento, CA 95828
County
Sacramento County
Phone
(916) 538-7777
Website
carbdieseltest.com
Mobile testing
Yes — comes to your yard
OBD testing
Yes
Smoke opacity (non-OBD)
Yes
Motorhomes
Yes
Credentialed testers
1
Last verified

Call (916) 538-7777 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 Capital City Diesel Insp. can test

The test CARB requires depends on the engine's fuel and model year. Based on the services Capital City Diesel Insp. 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 inspectionYes
California-registered motorhomeSame test as above by engine year, once a yearYes

Clean Truck Check testers in Sacramento County

Capital City Diesel Insp. is one of 131 testing businesses in Sacramento County on CARB's public tester list. 118 of them offer mobile testing and 71 do smoke opacity tests. In Sacramento itself there are 68 listed businesses, 59 of them mobile. All testers in Sacramento 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 Capital City Diesel Insp. 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 Capital City Diesel Insp. offer mobile Clean Truck Check testing?

Yes. Capital City Diesel Insp. 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 Capital City Diesel Insp. test a 2012 or older diesel truck?

Yes. Capital City Diesel Insp. 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 Capital City Diesel Insp. charge for a Clean Truck Check?

Capital City Diesel Insp. has not published prices with us; call (916) 538-7777 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 Capital City Diesel Insp. a CARB-credentialed tester?

Capital City Diesel Insp. 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 Sacramento

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 (916) 538-7777