Ford Smog Check
Ford passenger vehicles + light trucks need California smog every 2 years. Diesel F-250/F-350 1998+ must follow standard smog. Mustang Mach-E + Lightning are BEVs and 100% exempt.
Common reasons a Ford fails California smog
- F-150 EcoBoost timing chain stretching — affects emissions readings
- Older Explorer/Expedition cat converter degradation
- Diesel pickups with deleted DPF/DEF — will fail visual inspection
- Mustang aftermarket exhaust without CARB EO# — visual fail
How to prepare your Ford (pass first try)
- Drive 30+ miles, mix of highway and city
- Diesel trucks: ensure DEF tank is full
- Restore OEM emissions equipment if previously deleted (deleted F-250s will fail)
- Check for aftermarket parts with CARB EO numbers
Ford vehicle categories
- gas (F-150, Mustang, Explorer, Escape, Edge, Bronco)
- diesel (F-250, F-350 Power Stroke ≤14k lbs)
- BEV (Lightning, Mach-E — exempt)
Common Ford smog questions
Where can I get a Ford smog check?
Any of our 13 BAR-licensed STAR-certified locations in San Diego, Orange, and Riverside counties handle Ford smog inspections. Walk-ins welcome. 15-25 minute inspections.
What are common reasons a Ford fails smog?
F-150 EcoBoost timing chain stretching — affects emissions readings is one of the most common. Visit our shop for diagnosis if your check engine light is on.
How can I prepare my Ford for smog inspection?
(1) Drive 30+ miles, mix of highway and city. (2) Diesel trucks: ensure DEF tank is full. (3) Restore OEM emissions equipment if previously deleted (deleted F-250s will fail).
Is my Ford EV/BEV exempt from California smog?
Yes — any 100%-electric Ford (no gasoline engine) is exempt under California Health & Safety Code §43002. PHEV versions are still required.
STAR-certified shops near you
All locations handle Ford smog inspections. Walk-ins welcome.