NEDC, WLTP, and CLTC are different testing standards used to measure an electric vehicle's driving range, with WLTP being the most realistic global standard, CLTC being an optimistic China-specific standard, and NEDC being an outdated predecessor.

For international buyers importing EVs from China, the most important distinction is understanding how a vehicle's advertised CLTC range will translate to real-world performance in your home market. Because Chinese domestic models are tested using the CLTC cycle, their listed range is often significantly higher than what a driver would achieve under WLTP or real-world conditions. Understanding the difference is key to setting correct customer expectations.

NEDC (New European Driving Cycle)

NEDC is the oldest of the three standards. It was designed in the 1980s and is based on theoretical driving models with slow speeds, gentle acceleration, and long periods of idling. As a result, NEDC figures are highly optimistic and do not reflect modern driving habits.

While largely replaced by WLTP for new cars in Europe and other regions, you may still encounter NEDC figures on older or used EV models. It is best viewed as an inaccurate, legacy measurement.

WLTP (Worldwide Harmonised Light Vehicle Test Procedure)

WLTP is the modern global standard designed to provide a much more realistic estimate of an EV's range. The test is more rigorous and better reflects actual on-road performance:

  • Longer test distance
  • Higher average and maximum speeds
  • More dynamic acceleration and braking phases
  • Accounts for optional equipment and different vehicle trims

WLTP figures are generally considered the most reliable benchmark for comparing EVs from different manufacturers across global markets.

CLTC (China Light-Duty Vehicle Test Cycle)

CLTC is China's homegrown testing standard, introduced to better reflect local driving patterns, which involve more low-speed, stop-and-go traffic compared to European or American conditions. However, the test includes more low-speed driving and less aggressive acceleration, which is more efficient for an EV.

Because of this focus, CLTC range figures are consistently the most optimistic—often 15-25% higher than the WLTP figure for the same vehicle. When sourcing a new Chinese EV, the manufacturer will almost always advertise the CLTC range.

How to Interpret Range Figures as a Buyer

When evaluating a Chinese EV for import, follow these practical steps:

  1. Look for the WLTP Figure: Many Chinese automakers who export their vehicles also publish WLTP figures. Prioritize this number as your primary guide for market suitability.
  2. Estimate from CLTC: If only a CLTC range is available, a conservative rule of thumb is to reduce it by about 20% to get a more realistic estimate comparable to WLTP.
  3. Consult Your Sourcing Partner: An experienced partner can provide crucial context. At Starvia Automotive, our New EV Export team helps buyers decode these specifications, offering insights into how a model’s advertised CLTC range performs in real-world conditions outside of China. We ensure you choose vehicles with a practical range that will satisfy customers in your specific market.