What is WLTP? Its Importance for Electric Vehicles

WLTP (Worldwide Harmonised Light Vehicle Test Procedure) is a standard test procedure used to measure fuel consumption, emissions, and—specifically for electric vehicles—range values. In this article, we will examine what WLTP is and why it matters for electric vehicle owners.

What is the WLTP Test Procedure?

WLTP replaced the old NEDC (New European Driving Cycle) standard in 2017. This new test procedure was designed to better reflect real driving conditions. WLTP tests have the following features:

• Longer test duration
• Higher average and maximum speeds
• More dynamic driving profile
• Different driving modes and conditions

WLTP vs NEDC

Key differences between WLTP and NEDC:

WLTP Range Values for Electric Vehicles

WLTP tests provide three different range values for electric vehicles:

1. City (Low): Urban driving
2. Combined: Mixed driving conditions
3. Highway (High): High-speed driving

Real Life vs WLTP Values

Although WLTP values are closer to real-life conditions than NEDC, they are still based on ideal test environments. Factors affecting real range values include:

• Ambient temperature
• Driving style
• Road conditions
• Vehicle load
• Use of air conditioning/heating

How to Interpret WLTP Values?

Points to consider when evaluating WLTP range values:

1. Treat WLTP values as a reference, not a maximum
2. For real range, target about 70-80% of the WLTP value
3. Consider seasonal changes
4. Adjust according to your driving style

Conclusion

WLTP is an important reference point for electric vehicle buyers. However, it is more accurate to use these values as a comparison and planning tool rather than an absolute measure. Real range values will vary depending on usage conditions and driving habits.