It's pretty well understood that government tests are not reflective of real world driving habits or conditions. The test is however consistent and can be used

It's pretty well understood that government tests are not reflective of real world driving habits or conditions. The test is however consistent and can be used as a basis for comparison of different vehicles. It's very much like synthetic benchmarks for CPUs. They won't give you a 100% accurate picture but they're a good basis for comparison.