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I think traction control or dynamic stability control, whatever it's called, is to blame for this behavior.  Traction control was improved considerably for LCI i3's.  As a result, regen braking doesn't suddenly stop when driving over a rough road.  Our former 2014 i3 suffered from this loss of regen braking over rough roads whereas our 2019 i3 has never suffered from this behavior.  Unfortunately, I don't think this behavior can be changed in pre-LCI i3's.


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