A BMW engineer joined BMW Blog for a lap around the Miramas private track where they tested the Direct Water Injection system under different loads and speeds; from 80 km/h (normal driving) to 130 km/h (highway speeds) and 180 km/h (race track or Autobahn driving). At the end of therun, the iPad installed in their prototype car showed an average fuel consumption benefit of 4.1 liter per 100 km (57.3 mpg) or 20.9 percent. In other run, the average fuel consumption was 2.82 l/100 km (112 mpg) or 18.4 percent.
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