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Electric Vehicle Battery Degradation: Manufacturer's Claims vs Reality

Owners of a popular electric vehicle report significant battery degradation within 2 years, contradicting the manufacturer's promise of minimal loss over 8 years.

Mar 22, 2026
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EV Owners AllianceAuto Industry NewsClean Energy Tech Review

Evidence

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1

An independent survey of 4,200 owners reveals an average 30% range loss within 24 months of purchase, far exceeding the manufacturer's published degradation curve of less than 5% over the same period. Many owners report that real-world range now falls below the threshold needed for their daily commute.

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