Uploaded October 2025 | Updated September 2026, 2 weeks ago

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A year on from our last update, let's go over what the crowd-sourced data says on how much battery degradation there is on the Hyundai Ioniq 28kWh EVs from across the world. This time, we have 87 cars participating and they have submitted anywhere between 1 and 50 readings each, allowing to assess how much truly usable battery capacity there is in the car still.
We have plenty of cars over 100,000km, and a good chunk over 200,000 km on the odometer.

How to evaluate your own remaining usable battery capacity
Video
youtube.com/watch?v=ft8J8p9VyWs

Calculator
bit.ly/4dhTPRU

How to submit readings and refine your own number to see where you are on the 'degradation scale'
https://forms.gle/fGKWn2Fney9NN1u38

Referral code if you are looking to switch to Octopus energy
https://share.octopus.energy/jolly-snow-221

Additional image and video resources:
vecteezy.com
deepai.org/machine-learning-model
gemini.google.com/app

Music:
Piano classical | The Open Sky by Alex-Productions
[Documentary Classical Music] Background
youtube.com/watch?v=R7bAiFjFCig
Music promoted by https://onsound.eu/

#ioniq28 #batterydegradation #crowdsourcing