[bennygsr]

We have had coolant issues on our 2018 G31 530i more or less since brand new. Frequent top ups required, numerous pressure tests before eventually having the coolant pump replaced at about 35000 kms (20k miles ) under warranty.

Now at 50k kms (30k miles) we've been told we need turbo lines replaced as they are leaking (metal), as well as the the expansion tank line (plastic). However we are no longer under warranty

We will follow this up with BMW head office, my concern is am I going to have coolant issues as long as we have the car? Is there a bigger problem at play?

I've read about BMW being quite notorious with cooling systems made of plastic and failing but don't really want to part with more money at each service each time another cooling point weakness is exposed.

[Joe-BMW33]

Originally Posted by bennygsr

We have had coolant issues for as long as we've had the car since new. Frequent top ups required, numerous pressure tests before eventually having the coolant pump replaced at about 35000 kms (20k miles ) under warranty.

Now at 50k kms (30k miles) we've been told we need turbo lines replaced as they are leaking (metal), as well as the the expansion tank line (plastic). However we are no longer under warranty

We will follow this up with BMW head office, my concern is am I going to have coolant issues as long as we have the car? Is there a bigger problem at play?

I've read about BMW being quite notorious with cooling systems made of plastic and failing but don't really want to part with more money at each service each time another cooling point weakness is exposed.

What year and model is the car and are you saying the turbo coolant lines that are leaking are already the upgrading braided aluminum lines?