March 25, 2024 - As doubts have been shared about the distance standards for electric cars, how many formats are there and how are they different? Sure Before Sharing Center, check with Mr. Suramis Charoen-ngam, tester and automotive technology expert. Electric vehicle mileage standards It measures how far an electric car can travel on a single battery charge. Currently, there are standards that are commonly used, including EPA, WLTP, CLTC, and NEDC. Each standard is different. Because there are different tests. Including the various conditions for measurement are also different. Standard 1: EPA (US Environmental Protection Agency) It is a standard used in the United States. It is considered the latest standard that people around the world are familiar with. Using various methods of simulating running. Whether it's a city running test (UDDS) and a country running test (HWFET), which will be done alternately until the battery runs out. and the car can no longer drive Then the maximum distance traveled by the electric car will be recorded. Standard 2: WLTP (Worldwide Harmonized Light Vehicle Test Procedure) It has been used since 2017 as an accurate standard. The distance test tests both city and country running conditions, resulting in a running distance that is closer to reality. Standard 3: NEDC (New European Driving Cycle) European electric vehicle distance measuring standards It is a test for cars used in the city. and roads in the suburbs As a result, the numbers that come out are somewhat higher than the actual running of the car, which may not be very accurate. Standard 4: CLTC (China Light-Duty Vehicle Test Cycle) The test was conducted at three speeds: low, medium and fast. The test duration was 30 minutes and the speed went from a standstill to a top speed of 114 kilometers per hour. Both electric cars like TESLA sold in China also use the CLTC standard. From the numbers that car manufacturers show, they are not always real numbers that guarantee driving. Because each person's driving is diff erent. The environment is also different. Therefore resulting in different energy consumption. But it can be used as information for deciding on purchasing an electric car. that is suitable for your own use Source: Thai News Agency