A directory of US smog stations, sorted by what actually matters on inspection day.
Zerox24 is an independent directory of smog and emissions inspection stations across the United States. Every listing carries the public-facing inspection signals that decide whether a station can actually handle your renewal: STAR certification, test-only operation, no-appointment / walk-in availability, fast pass support, DMV renewal handoff, and diesel coverage.
The aim is narrow. If you're holding a renewal notice, you don't want a generic auto shop directory — you want to know which nearby station is STAR-certified (because the DMV flagged you for a STAR station), or which can take a walk-in tomorrow morning, or which actually does diesel. The directory leads with those answers and falls back to the rest only when the evidence isn't there.
We don't broker leads, take a cut, or schedule appointments — find a station, call the listed number, and go. Stations we couldn't pull much public detail on are shown as limited-evidence entries instead of being padded out with filler.