Sxs don't require emissions. Such small output engines won't make a difference. Most of the epa's stats are just that. You would think they would want vehicles to be more efficient. All those unnecessary restrictions on vehicles only cause vehicles more repairs and less life. Look at modern diesel trucks, the engines don't last as long that should be looked at. My 06 KW is still going, I don't own anymore but still running strong. Ultralow diesel also causes engines more maintenance due to less lubricity in the fuel. They push these rules that ultimately cost the consumers more money.