The WLTP measuring technique is based on globally compiled, real driving data, which will result in the values determined also being more realistic. Among the changes this involves are redefined, significantly more stringent test conditions and higher speeds, together with a substantially longer test duration (30 instead of 20 minutes).
To determine the CO2 emissions more precisely, both standard equipment options and special equipment options for a vehicle are included in the test procedure. This will produce two values for each type of vehicle: the lowest and highest possible standard consumption value according to the aerodynamics, weight and rolling resistance. Thanks to WLTP, you will be able to better assess a vehicle’s consumption and CO2 emissions. In the case of a specific vehicle configuration, the individual standard value will be indicated directly. In the case of a specific vehicle configuration, the individual standard value will be indicated directly. Even with this test procedure, deviations will still be possible in real-world operation. Regardless of this, everyday consumption and CO2 emissions continue to be subject to the different conditions of topography, climate and personal driving technique. Also exerting an influence are the traffic situation, the current load carried and the use of devices such as the air conditioning system. One thing is certain: the test conditions are more realistic than before, which means that higher fuel consumption and CO2 values as well as lower ranges for electric vehicles can be expected on paper. However, this does not have any adverse effect on the real fuel consumption or range. In addition, the BMW Group is always working on new technologies in order to improve consumption and range.
All vehicles of the BMW Group that can be ordered in the EU28+ countries are approved in accordance with the WLTP method.
In Germany, however, the legislator specifies that the values measured with WLTP will initially be communicated with a calculation referring them back to NEDC values. The EU Commission has developed a correlation technique for this purpose, which will be binding to an equal extent on all vehicle manufacturers.
This phase is intended to simplify the changeover. Its duration will depend on the respective national legislation and will thus vary from country to country.
From September 2018, all car manufacturers have been legally obliged to test in accordance with WLTP for all vehicles sold in the EU as well as in Switzerland, Turkey, Norway, Liechtenstein and Israel (EU28+).
As from January 2021, all countries which adopt the EU legislation for vehicle registration will have to issue and communicate WLTP values for all vehicles.