hahaha terrible. design like an old Suzuki, the engine is louder than an old Opel car. Golf 7 has a quieter engine. People these days don't recognize quality... no wonder Mercedes is in trouble. RIP Mercedes.
We own a Golf 7 Wagon Diesel in our family and I already drove an E220d W213. I am sure the W214 is quieter than the predecessor. The Golfs aren't quiet.
Most likely the microphone adjusts the sensitivity so that the volume stays constant. if it’s very loud like a concert it reduces the volume and other way around. It’s not representative of real life unless the microphone is calibrated.