What battery degradation actually means, how climate affects real-world range, how to tell if an EV fits your charging life, and why Carfax can't tell you any of this.
The thing Carfax can't tell you
Battery degradation isn't an event that gets reported to a DMV or insurance company. It's a continuous process. A 2019 Nissan LEAF with 60,000 miles could have lost 25% of its original range — or none at all, depending on how it was charged. No traditional VIN report tracks this. OFFO estimates it from degradation curves calibrated by make, model, year, and mileage.
Check a listing free →Battery degradation isn't in any DMV or insurance database. Here's how OFFO infers it.
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