Long-Term Endurance and Degradation Trends in EV Batteries

A recent study by the diagnostic firm **Aviloo** analyzed data from **500,000 electric vehicle tests** conducted globally between 2022 and 2026. The findings reveal that most **EV batteries maintain high performance** levels even after high mileage, debunking fears of rapid degradation. Top-performing models like the **Hyundai Ioniq 5 and Mercedes-Benz EQA** retained over **93% of their original capacity** after 150,000 kilometers. In contrast, smaller vehicles with **air-cooled batteries**, such as the Nissan Leaf and Renault Zoe, experienced **faster wear** due to more frequent charging cycles. While the general outlook for battery longevity is **highly positive**, factors like **extreme climates and charging habits** can cause significant variations in individual health scores. Overall, the research confirms that modern electric cars typically lose only about **10% of their range** after several years of heavy use.