EV Range Standards

Japanese 10-15 Mode

10-15 EV range / energy test label used in Japan (legacy). ExploreCalcTools conversions involving 10-15 are empirical estimates only.

Overview

  • Region: Japan (legacy)
  • Country / body: Japan
  • Test type: legacy urban cycle
  • Test cycle: 10-15 Mode
  • Status: legacy
  • Typical usage: Historical brochure and used-market comparisons

What is 10-15?

Japanese 10-15 Mode (10-15) is a laboratory driving-cycle / range-label used primarily in Japan (legacy). ExploreCalcTools documents 10-15 so buyers can compare estimated EV range figures across standards such as WLTP, EPA, NEDC and CLTC.

10-15 does not measure the same mix of speed, temperature, HVAC load, or stop-and-go behaviour as every other cycle. A car rated 10-15 500 km will often show a different number under EPA or CLTC — our converters apply empirical estimate factors only.

This procedure is marked legacy on ExploreCalcTools — useful for historical brochure comparisons, not as a modern official rating.

How ExploreCalcTools uses this standard

Open the 10-15 info page, then try the free EV Range Converter. Results are labeled Estimated / Approximate — never official homologation.

Practical tips

  • Prefer comparing the same vehicle under the same standard when possible.
  • Cold weather, highway speed, and cabin heating typically reduce real-world range vs lab figures.
  • Legacy cycles (NEDC, JC08, 10-15, China NEDC) often look optimistic versus modern WLTP/EPA.

Educational estimates only — not a substitute for manufacturer or regulatory ratings.

Related converters

EV Range Converter · Standard Comparison · EV Range Calculator (battery/efficiency)

EV range standards use different testing procedures and conditions. Conversions between standards are estimates and are not exact mathematical conversions. Actual real-world range may vary based on vehicle model, battery size, speed, temperature, terrain, driving style, HVAC use, and other conditions.

Other standards