This is just a personal anecdote - I got a brand new Mercedes in 2016, it was even fully made in Germany - and it was probably the worst assembled vehicle I have ever owned in my life(and I used to own a 1995 Fiat Cinquecento), the number of creaks and rattles coming from all places in that car was almost funny if it wasn't so upsetting. I've had several visits to the dealership just to fix rattling seats, upholstery, dashboard and sunroof. Drove very well and never had any mechanical or electrical problems, but the interior was horrendous.

Then in 2020 I swapped it for a brand new Volvo XC60(made in China!) and in the last 3 years this car has literally been completely trouble free. No rattles from anywhere, nothing. Extremely well put together, comfortable, drove it across Europe multiple times now and literally no issues with it whatsoever. Such a stark contrast to mercedes for me.