 The Opel Ampera official all @-@ electric range under the EU @-@ approved UN ECE R101 standard for plug @-@ in hybrids is 83 km ( 52 mi ) . Opel prefers to state that the Ampera 's EV ranges is 40 to 80 kilometres ( 25 to 50 mi ) which is confirmed in tests carried out by ADAC Motorwelt . The Vauxhall Ampera is reported to have a total range of 310 mi ( 500 km ) . 
