Orbea Gain D50 2019 X35, 4000km, losing power


New Member
United Kingdom
I've been using my Gain for commuting over the last two years, clocking up around 4000km.

In the last month, I've noticed that the power assistance isn't as powerful as it used to be. There's very little DIY info out there on how to diagnose these bikes, does anyone know where to get started trying to determine which part might need servicing or replacement?

I've taken a screenshot of the Mahle app when the bike is at speed, incase anything jumps out:


Many thanks in advance!