Volkswagen Mission Efficiency: what its two consumption figures really show
Volkswagen says its Mission Efficiency concept used 6.48 kWh/100 km on an ideal drive and 7.51 kWh/100 km, charging losses included, in a separate road test.
The lower figure came from a steady 68 km/h trip with no hills and the air conditioning switched off. Those conditions reduce the energy demanded by speed changes, climbing and cooling. For an owner or fleet manager, 6.48 kWh/100 km is therefore a tightly defined prototype result, not a dependable estimate for a mixed daily route.
Volkswagen describes another road test separately: 7.51 kWh/100 km including charging losses, or 6.89 kWh/100 km without them, at a mean speed of 67.72 km/h. The distinction matters when comparing electricity taken from a charger with energy used by the car. The two tests should be read with their conditions attached rather than combined into a single headline consumption figure.
The design case rests on a streamlined body, small frontal area, wheel covers and underbody. Volkswagen reports a drag coefficient, Cd, of 0.158, but Cd alone is not total aerodynamic drag; frontal area matters too. The company says the concept uses MEB+ front-wheel-drive production technology. Mission Efficiency is not for sale, and its prototype measurements do not promise everyday consumption or the range of a future production model.