That's about 20€ in spare parts every 10 years. The savings in electricity and water with a new machine are tiny compared to savings by not having to buy a new machine in the first place and then replace it every 5 years...
I'm just not sure I believe the newer models ratings. mine is much more efficient in water use on paper than what the water meter clearly states.
Funny story about new "more efficient" machines... a neighbor bought a new BEKO machine (before that she had a CANDY I think). She says the new machine uses so little water you cannot even see the actual water inside. All you see is soaked clothes.
She says that the results are worse compared to the old CANDY and that the clothes get damaged more easily.
Due to EU regulations there is no more "add extra water" feature like in older machines.
So what she does is she waits for the machine to pump water inside then she pours 6L of water through the detergent dispenser. Now that's progress :)
Not sure I buy this, I just bought a new Miele (to replace the broken Bosch) that has a dedicated "Water Plus" button.