STAR Certified Test Only smog station · 493 E 6th St, Unit J, Tracy, CA Mon–Fri 8:30 AM–5:30 PM · Sat 9:00 AM–3:00 PM · (209) 836-3122
6th St. & MacArthur Smog - STAR Certified Smog Check Tracy CA
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Diesel Smog Check in Tracy, CA

Smog inspections for eligible diesel cars, trucks and SUVs from a STAR Certified test-only station.

Which diesel vehicles need a smog check?

Under California’s Smog Check program, diesel-powered vehicles that are model year 1998 or newer with a gross vehicle weight rating (GVWR) of 14,000 lbs or less are subject to inspection. Diesel vehicles from model year 1997 and older are exempt. Unlike gasoline vehicles, diesels don’t get a newer-model-year exemption.

What’s involved in a diesel smog check?

  • A visual inspection of emissions-control components
  • An OBD-II (on-board diagnostics) check
  • A visible smoke test

Heavy-duty diesels over 14,000 lbs

Heavier diesel vehicles aren’t part of the DMV Smog Check program, but may be subject to the California Air Resources Board’s Clean Truck Check program. That’s a separate requirement — see CARB for details. Call us if you’re not sure whether your vehicle belongs to Smog Check.

Smog check sandwich-board sign and open test bay with a vehicle being inspected at 6th St. & MacArthur Smog in Tracy

Diesel smog FAQ

Where can I get a diesel smog check in Tracy?

We test eligible diesel vehicles at our Tracy station. See the diesel smog check page for which diesel vehicles need an inspection.

What vehicles need smog testing in California?

Most gasoline vehicles need a smog check every two years and when ownership changes, with exceptions for newer model years, electric vehicles and motorcycles. Diesel vehicles from model year 1998 and newer with a gross weight rating of 14,000 lbs or less are included. See our smog check requirements guide.

What happens if my car fails a smog test?

You’ll receive a Vehicle Inspection Report showing why it didn’t pass. A licensed repair shop can diagnose and fix the issue, and you can then retest. Income-eligible owners may qualify for help through the state’s Consumer Assistance Program — see the BAR website.

How much does a smog check cost in Tracy?

Our current coupon is $39.75 for the smog inspection plus the $8.25 California smog certificate fee, which applies when a Smog Check certificate is issued, for Most Cars & Light Trucks — 2000 & Newer. See the coupon page for details, or call us for pricing on other vehicles.

Ready for your smog check in Tracy?

Walk in during business hours or call (209) 836-3122.

6th St. & MacArthur Smog · STAR Certified Test Only
Smog Check Coupon

Show this coupon before your smog test at 6th St. & MacArthur Smog in Tracy.

  • Present this coupon before your smog test begins.
  • $39.75 for the smog inspection plus the $8.25 California smog certificate fee, which applies when a Smog Check certificate is issued.
  • Eligible vehicles: Most Cars & Light Trucks — 2000 & Newer.
493 E 6th St, Unit J, Tracy, CA 95376 · (209) 836-3122
$39.75
Smog Check
+ $8.25 Certificate Fee
Most Cars & Light Trucks — 2000 & Newer