Understanding EV Range Ratings in Indonesia

When an electric vehicle (battery electric vehicle / BEV) advertises a range, that number comes from a standardised laboratory test, and the test used makes a big difference. The same car can quote a longer range under one standard than another. This guide explains the four you will see in Indonesia and how to read them realistically.

By mht-dev, Frontend Engineer & Creator

A frontend engineer who bought a first electric car in March 2026 and built EV Charge Calculator while working out the real cost of charging it, writing every guide from an everyday new EV owner's perspective.

The four rating standards

NEDC (New European Driving Cycle) is the oldest and most optimistic. It runs at gentle, steady speeds, so its figures are well above real driving (a rough real-world estimate is around 70% of an NEDC number). CLTC is China's cycle, also optimistic with lots of low-speed city running (roughly 80% in the real world). WLTP (Worldwide Harmonised Light Vehicles Test Procedure) is the modern European standard and far more realistic (around 85%). EPA is the US standard and the toughest, so its figures are closest to what you will actually see (close to 100%).

Many Chinese-brand EVs in Indonesia quote NEDC or CLTC, while European and Korean models often quote WLTP. That is why two cars with a similar real-world range can advertise very different numbers: they are simply measured on different cycles. Always check which standard a range figure uses before comparing two cars.

Estimating real-world range

A practical way to read any claimed range is to discount it toward reality: roughly ×0.72 for NEDC, ×0.80 for CLTC, ×0.85 for WLTP, and leave EPA about as-is. Real distance also depends on how you drive. Highway speeds, hard acceleration, and running the air-conditioning hard in Indonesia's heat all reduce range, while gentle city driving can beat the estimate. The vehicle pages on this site already show a realistic-range estimate using these discounts, alongside the manufacturer's claimed figure.

Range and charging cost go hand in hand: the charging cost calculator estimates what it costs to refill a given percentage of the battery, and your realistic range tells you how far that percentage actually takes you.

Frequently asked questions

Why doesn't my EV reach its advertised range?

Advertised range comes from a lab test cycle that is gentler than real driving, especially the optimistic NEDC and CLTC standards. In real conditions in Indonesia (highway speeds, traffic, and air-conditioning in the heat), you should expect somewhat less, roughly 70 to 85% of the claimed figure depending on the test standard used.

Which range standard is the most realistic?

EPA (the US standard) is the closest to real-world driving, followed by WLTP. NEDC is the most optimistic and CLTC is also on the optimistic side. When comparing two cars, only compare figures measured on the same standard.

What do NEDC, WLTP, and CLTC stand for?

NEDC is the New European Driving Cycle (old, optimistic), WLTP is the Worldwide Harmonised Light Vehicles Test Procedure (modern Europe, more realistic), and CLTC is China's light-vehicle test cycle (optimistic, city-weighted). EPA is the US Environmental Protection Agency's test (the strictest).