---
title: "Natha &. Yuli Inc. — Clean Truck Check, San Pablo, CA"
description: "Natha &. Yuli Inc. in San Pablo, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/natha-and-yuli-inc-san-pablo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Natha &. Yuli Inc.

Clean Truck Check tester in San Pablo, CA (Contra Costa County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 980 Stanton Ave, San Pablo, CA 94806 |
| County | Contra Costa County |
| Phone | (510) 815-0030 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Natha &. Yuli Inc. can test

| 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Clean Truck Check in San Pablo, about 1 mile away. [See listing](https://ctcfinder.com/tester/clean-truck-check-san-pablo/).

## Clean Truck Check testers in Contra Costa County

Natha &. Yuli Inc. is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 do smoke opacity tests. In San Pablo itself there are 7 listed businesses, 7 of them mobile.

## 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](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Natha &. Yuli Inc. offer mobile Clean Truck Check testing?

Yes. Natha &. Yuli Inc. 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 Natha &. Yuli Inc. test a 2012 or older diesel truck?

Natha &. Yuli Inc. does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Clean Truck Check](https://ctcfinder.com/tester/clean-truck-check-san-pablo/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Natha &. Yuli Inc. charge for a Clean Truck Check?

Natha &. Yuli Inc. has not published prices with us; call (510) 815-0030 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](https://ctcfinder.com/guide/cost/).

### Is Natha &. Yuli Inc. a CARB-credentialed tester?

Natha &. Yuli Inc. 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 nearby

- **[Trucking Inc](https://ctcfinder.com/tester/trucking-inc-richmond/)** — 2828 Gonzaga Ave, Richmond, CA 94806 — (209) 737-3137 — 1 mi. Services: mobile testing.
- **[Clean Truck Check](https://ctcfinder.com/tester/clean-truck-check-san-pablo/)** — 1371 23rd St, San Pablo, CA 94806 — (510) 504-7599 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[El Amigo Smog](https://ctcfinder.com/tester/el-amigo-smog-san-pablo/)** — 3024 Giant Rd, San Pablo, CA 94806 — (510) 938-3344 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jonathan Sordine](https://ctcfinder.com/tester/jonathan-sordine-san-pablo/)** — San Pablo, CA 94806 — (510) 241-6894 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Moiz Abdul](https://ctcfinder.com/tester/moiz-abdul-san-pablo/)** — San Pablo, CA 94806 — (916) 508-6393 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Semper Mobile Solutions](https://ctcfinder.com/tester/semper-mobile-solutions-san-pablo/)** — 1000 Lake St, San Pablo, CA 94806 — (650) 201-6734 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.