510-589-8108|Serving All of California
Mobile Diesel Testing

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Ready to schedule on-site diesel smog, OBD, or opacity testing? Call or text us directly, or fill out the form and we'll get back to you.

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510-589-8108

Fastest way to schedule. We answer calls and texts during business hours.

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Scheduling & What to Expect

  • We come to your yard, terminal, warehouse, or job site — no towing required.
  • Fleet packages available for operators with multiple vehicles.
  • Testing is fast and thorough with minimal downtime to your operation.
  • Same-day compliance documentation provided on-site.
  • Serving commercial fleets throughout California.

Send Us a Message

Fill out the form and we'll follow up to confirm your appointment.

Mobile Diesel Testing

California CARB-compliant diesel emissions testing — brought directly to your fleet yard, warehouse, or job site.

510-589-8108

Service Area

Northern California
Southern California
Central California

We come to your location — fleet yards, warehouses, storage facilities, and job sites throughout California.

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California diesel emissions testing — statewide service