Minnesota Truck Emissions & Clean-Truck Rules

How Minnesota handles truck emissions

Minnesota adopted Clean Cars Minnesota, but that rule covers new light- and medium-duty vehicles for sale, not heavy trucks, and the state did not adopt Advanced Clean Trucks. There is no heavy-duty diesel emissions inspection here, and the old car test ended in 1999. For your rig, federal EPA rules govern: keep the DPF and DEF/SCR working and DEF topped off. Deleting emissions gear violates the Clean Air Act, roughly $45,000 per engine. Scales check safety.

What applies to you

• Program: Federal EPA only
• State rule: No state heavy-truck emissions program. Minnesota adopted Clean Cars Minnesota (LEV/ZEV standards) effective model year 2025, but that rule covers only new light- and medium-duty vehicles for sale and excludes heavy trucks; the state is also phasing that rule out after MY2025. Minnesota did not adopt Advanced Clean Trucks, and its old Twin Cities passenger-car emissions test ended in 1999. Federal EPA standards govern your rig.
• Penalty: No state heavy-truck emissions fine exists. Federal Clean Air Act anti-tampering penalties apply: about $45,000 per noncompliant engine and roughly $4,500 per tampering event or defeat device sold or installed (statutory maximums, adjusted annually).
• DPF / DEF: Federal EPA equipment nationwide, never delete or tamper with it

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