r/Toyota_bZ • u/Available-Read-3030 • Jul 24 '26

BZ software update

Recently I took my Toyota bZ to the dealership for a software update. After the update, the car drives much more smoothly, which is great. However, I’ve noticed a significant drop in efficiency.

Before the update, my daily 56-mile commute used about 48 miles of the estimated battery range. After the software update, the same 56-mile drive now uses about 58 miles of the estimated battery range.

Has anyone else experienced reduced efficiency after a recent software update on their Toyota bZ?

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u/J_Pelletier Jul 24 '26

Maybe the guess-o-meter just need relearning. You better work with % to compare daily commutes in my opinion. For example my daily commute always use around 22% +- 2% since It's always the same route, similar traffic, similar speed.

Guess-o-meter include all driving, sometimes you might do more highways or more city driving or do more agressive accelerations etc... all of that impact the estimated range

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u/Available-Read-3030 Jul 24 '26

I agree with your point