Concerns regarding battery health have long been a central topic in the electric vehicle (EV) community. Many drivers have harbored fears that as vehicles age and accumulate mileage, the performance and capacity of their batteries would inevitably decline. However, a recent extensive study suggests that these fears may be largely unfounded.

Comprehensive Four-Year Analysis

The research, conducted by the Swedish automotive marketplace Carla, analyzed data from nearly 10,000 electric vehicles. The study spanned from 2022 to 2026 and featured a diverse range of manufacturers, including Tesla, BMW, and Audi. The primary objective was to evaluate battery health after the vehicles reached the 62,000-mile threshold.

The results were striking: rather than showing significant wear, the batteries demonstrated remarkable resilience. Two of the tested models managed to retain 97% of their original capacity after covering 62,000 miles, effectively challenging long-standing assumptions about inevitable battery degradation.

Top Performers in Battery Longevity

Carla conducted 9,954 health tests during the four-year period. South Korean manufacturers dominated the top of the rankings, highlighting the reliability of their engineering:

  • Kia e-Niro and Hyundai Kona: Tied for the lead, both retaining 97% of their battery capacity.
  • Kia EV6: Secured third place with a retention rate of 95.95%.
  • Volvo XC40 Recharge: Ranked fourth at 94.70%.
  • Polestar 2: Completed the top five with 94.35%.

The BMW i3 represented the first German-made vehicle on the list, placing sixth with 93.77% capacity.

Insights on Tesla and General Market Trends

Contrary to expectations, Tesla did not secure a spot in the top five. The Tesla Model 3 (60.5kWh variant) was the brand's highest performer, ranking in the top ten with 93.94% capacity. Other Tesla models, including the 78.8kWh Model 3 and the Model S, followed closely in 12th and 13th places, respectively.

Perhaps the most encouraging takeaway from the study is the performance of the lowest-ranked vehicle. The Volkswagen ID.3 (58kWh) still maintained 91.7% of its battery capacity, a figure significantly higher than what many critics of electric vehicles previously anticipated. This data suggests that modern battery technology is far more durable than commonly assumed, providing peace of mind for prospective EV buyers.