Hengehold Trucks

Clean Truck Check tester in Palo Alto, CA (Santa Clara County).

Hengehold Trucks appears on CARB's public list of credentialed Clean Truck Check testers. It lists OBD testing, motorhome testing.

Location
762 San Antonio Rd, Palo Alto, CA 94303
County
Santa Clara County
Phone
(650) 494-2444
Mobile testing
No (test at the shop)
OBD testing
Yes
Smoke opacity (non-OBD)
No
Motorhomes
Yes
Credentialed testers
1
Last verified

Call (650) 494-2444 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. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).

Which trucks Hengehold Trucks can test

The test CARB requires depends on the engine's fuel and model year. Based on the services Hengehold Trucks 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 yearYes

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is TJF Solutions in Menlo Park, about 4 miles away. See listing.

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Sunshine Transportation in East Palo Alto, about 1 mile away. See listing.

Clean Truck Check testers in Santa Clara County

Hengehold Trucks 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. 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 Hengehold Trucks 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 Hengehold Trucks offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is Sunshine Transportation (about 1 mile).

Can Hengehold Trucks test a 2012 or older diesel truck?

Hengehold Trucks does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is TJF Solutions (about 4 miles). Trucks from 2013 on get an OBD scan instead.

How much does Hengehold Trucks charge for a Clean Truck Check?

Hengehold Trucks has not published prices with us; call (650) 494-2444 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 Hengehold Trucks a CARB-credentialed tester?

Hengehold Trucks 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 Palo Alto

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 (650) 494-2444