They suffer from some of the same problem your likely modern fridge does, and then kick it up two notches.

In the name of "safety", they have made design decisions such as integrating fuses directly into the very large and expensive control boards and making them non-replacable. Just in case this wasn't enough, they also tend to blow an OTP so that in the event that you have the know how to replace the fuses anyways, nothing will work. Naturally you also cannot just swap in a replacement board, as it needs to go through the same pairing process to the ECU as things like the car doors, which in most cases requires an active certificate/license on the ecu programmer that only dealerships/oem have.

Simpler != more reliable. Electronics fail quite often too. Just ask SSDs.

Also new EVs fail often too due to being cost cut to the extreme with the "move fast and break things".

In theory they should be, but EVs also tend to be more computerised, proprietary and locked down than ICE cars, so in practice I think it's not as simple as that.

For example there was that case of the car that needed an entire new sealed €5k battery controller because it was in a minor crash and blew a fuse.

My garage charges 50% more for labour on EVs. I'm sure part of that is price discrimination but I bet part is also because working on them is more difficult. I would not be surprised if they need to pay more for access to the manufacturer's diagnostic tools too, which are becoming increasingly required.

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