[throwaway77384]

Rather than just deriding someone, you could of course offer them a way to improve, by suggesting that it should be 'and solidly engineered', or 'engineered solidly'.

The whole sentence / tag line could probably do with improving, but maybe this is not a native speaker, making derision all the more unacceptable.

[tempodox]

“Made in Germany”. Also, the grammar has been corrected by now.