What We Do
Smog Testing & Repair Services
Star-certified. Honest. Fast. Done right the first time.
01
Smog Check & Certificate
State-certified OBD2 and tailpipe testing. Certificate issued same-day on a pass.
02
STAR Station Testing
M&M is STAR-certified — we test vehicles referred by the Bureau of Automotive Repair and gross polluters.
03
Smog Failure Diagnostics
Failed your smog? We dig into the root cause — not just the code. We find what's actually wrong first.
04
Smog Repairs
Catalytic converter, O2 sensors, EGR valve, EVAP system — we fix the exact issue causing your failure.
05
Pre-Smog Readiness Check
We check OBD2 readiness monitors before your official test to avoid failed attempts and wasted fees.
06
DMV Renewal Assistance
Smog due for DMV renewal? We prioritize renewal deadlines — just let us know and we'll work you in fast.
Failed Smog? We Fix It Right.
A lot of shops will clear your codes and send you back hoping for a pass. Not M&M. We diagnose exactly why your vehicle failed and repair the specific component — whether it's a catalytic converter, O2 sensor, or EVAP leak. Your retest is on us.
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