EPA-certified mini excavators: what the label means and how to check it
Why the engine of a mini excavator sold or imported in the US must be EPA certified, how diesel and gasoline engines are certified, and how to check a certificate.
In short
- EPA certifies the engine, not the excavator: the certificate covers an engine family for one model year.
- Engines and equipment imported into the US must be covered by a certificate of conformity unless an exemption applies.
- 86 of the 322 mini excavators we track are listed by their brand as EPA certified or name an engine we checked; for 67, we found the engine's certificate in EPA's records.
What the EPA certificate covers
Nonroad engines sold in the United States must meet EPA's exhaust emission standards. The engine maker certifies each engine family for each model year and receives a certificate of conformity; every engine built under it carries a permanent emission label, in English, that names the engine family. A machine is "EPA certified" in the sense buyers mean when its engine is covered by such a certificate and labelled.
Diesel and gasoline engines
- Diesel engines (compression ignition), such as the Kubota and Yanmar three-cylinder engines on 1.5- to 4-ton machines, are certified under EPA's nonroad diesel rules (40 CFR part 1039, Tier 4 for current engines). EPA publishes the certificates each year; we check each diesel engine model in our library against them.
- Small gasoline engines (spark ignition) of up to 19 kW, about 25 hp, such as the single-cylinder Briggs & Stratton, Honda and Rato engines on 1-ton machines, are certified by their makers under the small nonroad spark-ignition engine rules (40 CFR part 1054).
Imports and customs
The rules for imported engines and equipment are in 40 CFR 1068.301: engines and equipment imported into the United States must be covered by a certificate of conformity unless they qualify for an exemption, the importer must file an EPA import declaration and keep the records for five years, and U.S. Customs and Border Protection may refuse entry to machines that do not comply. A buyer importing a machine directly takes on these obligations; a seller shipping from US stock has already imported it.
How to check a machine
- Get the engine maker and model from the specification sheet, and a photo of the engine's emission label from the seller.
- Read the engine family and model year on the label.
- Check the engine family in EPA's annual certification data.
- For diesel engines, see the certificates we found: EPA-certified engines in compact equipment (EPA data checked October 24, 2026).
Mini excavators with an engine certificate found in EPA's records →
Questions
What does EPA certified mean on a mini excavator?
That its engine is covered by an EPA certificate of conformity for its model year and meets the emission standards for nonroad engines. The certificate belongs to the engine maker's engine family, and the engine carries a permanent emission label.
Can a mini excavator without an EPA engine be imported?
Engines and equipment imported into the United States must be covered by a certificate of conformity unless an exemption applies, and an EPA import declaration is required. U.S. Customs and Border Protection may refuse entry to machines that do not comply.
How do I check a mini excavator's EPA certificate?
Find the engine maker and model, look up the engine family in EPA's certification data, and check the emission label on the engine itself. On each machine page we show the certificate we found for diesel engines.