--- title: "MAC Auto Repair LLC — Clean Truck Check, Watsonville, CA" description: "MAC Auto Repair LLC in Watsonville, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, motorhome testing. Phone, address and nearby testers." url: "https://ctcfinder.com/tester/mac-auto-repair-llc-watsonville/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # MAC Auto Repair LLC Clean Truck Check tester in Watsonville, CA (Santa Cruz 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 | 499 Auto Center Dr Ste b, Watsonville, CA 95076 | | County | Santa Cruz County | | Phone | (831) 254-7061 | | Mobile testing | No | | OBD testing | Yes | | Smoke opacity (non-OBD) | No | | Motorhomes | Yes | | Credentialed testers | 1 | | Last verified | 2026-11-01 | ## Which trucks MAC Auto Repair LLC 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 | Yes | For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Alex Lopez in Watsonville, about 1 mile away. [See listing](https://ctcfinder.com/tester/alex-lopez-watsonville/). If you need a tester at your yard, the nearest listed tester that offers mobile testing is Betos mobile & truck services LLC in Royal Oaks, about 1 mile away. [See listing](https://ctcfinder.com/tester/betos-mobile-and-truck-services-llc-royal-oaks/). ## Clean Truck Check testers in Santa Cruz County MAC Auto Repair LLC is one of 18 testing businesses in Santa Cruz County on CARB's public tester list. 15 of them offer mobile testing and 6 do smoke opacity tests. In Watsonville itself there are 10 listed businesses, 8 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 MAC Auto Repair LLC 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 [Betos mobile & truck services LLC](https://ctcfinder.com/tester/betos-mobile-and-truck-services-llc-royal-oaks/) (about 1 mile). ### Can MAC Auto Repair LLC test a 2012 or older diesel truck? MAC Auto Repair LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Alex Lopez](https://ctcfinder.com/tester/alex-lopez-watsonville/) (about 1 mile). Trucks from 2013 on get an OBD scan instead. ### How much does MAC Auto Repair LLC charge for a Clean Truck Check? MAC Auto Repair LLC has not published prices with us; call (831) 254-7061 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 ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/). ### Is MAC Auto Repair LLC a CARB-credentialed tester? MAC Auto Repair LLC appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS. ## Other testers nearby - **[Betos mobile & truck services LLC](https://ctcfinder.com/tester/betos-mobile-and-truck-services-llc-royal-oaks/)** — 415 Hall Rd, Royal Oaks, CA 95076 — (831) 247-0392 — 1 mi. Services: mobile testing, OBD testing. - **[Alex Lopez](https://ctcfinder.com/tester/alex-lopez-watsonville/)** — Watsonville, CA 95076 — (831) 566-1827 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Best Service Automotive & Truck Repair](https://ctcfinder.com/tester/best-service-automotive-and-truck-repair-watsonville/)** — 18 Walker St, Watsonville, CA 95076 — (831) 353-1533 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Crafton’s smog check](https://ctcfinder.com/tester/craftons-smog-check-watsonville/)** — 771 Freedom Blvd, Watsonville, CA 95076 — (831) 227-3766 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Daniel Dye](https://ctcfinder.com/tester/daniel-dye-watsonville/)** — Watsonville, CA 95076 — (831) 713-8935 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Easy Tune Up 95$](https://ctcfinder.com/tester/easy-tune-up-95-watsonville/)** — 469 Union St, Watsonville, CA 95076 — (831) 535-8373 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.