The Environmental Protection Agency (EPA) is a governing body in the US that aims to protect the environment from pollution and destruction. One of the EPA’s many jobs is regulating diesel emissions. As an owner of a diesel-powered vehicle, you should stay informed about the regulations set by the EPA for diesel emissions, including the EPA diesel emission tiers. What Are the EPA Diesel Emission Tiers? EPA diesel emission tiers are stringent standards dictating the maximum allowable levels ...
