If you like, please send me the invoice.
We also have that same guarantee. It seems like someone must have fraudulently claimed 300 euros worth of materials. Of course, that could be true if they found even more "suspects."
The

wants to keep your car "running," and therefore they always tend to be overly cautious.
Maybe they also replaced the EGR valve – in that case, it would be a good price.
And if your pipe was heavily corroded, the EGR valve is a prime suspect.
Greetings.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.