European emission standards for Motor Vehicles set the acceptable limits for exhaust emissions of new vehicles sold within the European Union. The emission standards are defined in a series of European Union directives and have got progressively more stringent over time. The varying stages refer to an engines compliance with the standards are typically referred to as Euro 1, Euro 2, Euro 3, Euro 4, Euro 5 and Euro 6.
All MotorCheck History Checks and Full Checks contain detailed technical data about the vehicle which usually contains reference to the Euro Engine Category.