CLTC to NEDC range converter
A CLTC range figure is about 3 % higher than the same car's NEDC figure. Example: 400 km CLTC is about 390 km NEDC.
CLTC to NEDC conversion table
| CLTC (km) | NEDC (km) | Winter estimate (km) |
|---|---|---|
| 150 | 146 | 110 |
| 200 | 195 | 146 |
| 250 | 244 | 183 |
| 300 | 292 | 219 |
| 350 | 341 | 256 |
| 400 | 390 | 292 |
| 450 | 439 | 329 |
| 500 | 487 | 365 |
| 550 | 536 | 402 |
| 600 | 585 | 439 |
| 650 | 633 | 475 |
| 700 | 682 | 512 |
| 750 | 731 | 548 |
| 800 | 780 | 585 |
Formula: NEDC range = CLTC range × 0.975. The winter estimate assumes about 25 % less than the converted figure.
What are CLTC and NEDC?
CLTC
CLTC is the Chinese test cycle. It is run at lower average speeds than WLTP, so the same car shows roughly 15–20 % more range. Chinese brands launching in Europe usually publish a WLTP value later; that is the one to compare.
NEDC
NEDC was the European standard until 2017. It uses a gentle laboratory cycle at low speeds, so its range figures are typically 15–25 % too optimistic compared with WLTP.
Frequently asked questions
How do I convert CLTC to NEDC?
Multiply the CLTC figure by 0.975. For example, 400 km CLTC × 0.975 = 390 km NEDC. This is an average ratio: individual cars can differ by several percent.
Which figure is closest to real-world range?
EPA is the most conservative and usually the closest to mixed everyday driving. In winter, on the motorway or with a heavy load, expect a further 20–30 % less than any of these figures.
Why do the standards give different results?
Each standard uses a different test cycle: speeds, acceleration, temperature and how the lab result is adjusted differ. The car is the same; the yardstick is not.
Want the numbers for a specific car? Open the full range calculator or see the longest-range electric cars.