Hi,
Regarding the driving characteristics, I've already said something:
https://community.dieselschrauber.org/en/viewtopic.php?p=25624#25624
Otherwise, I can compare the PD engine with a Passat 90 PS TDI and my good 5-cylinder engine. Although, despite the turbo lag, I still prefer the 5-cylinder. When driving normally on country roads during my commute, I don't even need that much power between 1200 and 1800 RPM; I can downshift if necessary for overtaking, and on the highway, the engine speed is higher anyway. Otherwise, the 5-cylinder engine just runs more smoothly than such a "farmer's engine" with only four cylinders

.
The 90 horsepower engine provides a pleasant driving experience, but 90 horsepower is simply too little for a modern Passat.
The PD's weakness in engaging the clutch, followed immediately by a massive torque that, as someone who isn't used to PDs, promises performance it obviously can't deliver at higher RPMs, feels quite jarring.
The noise and vibration levels encouraged a relatively high driving style, so around 50 km/h in third gear. However, the Passat is generally better insulated than my old C4.
Fuel consumption: 8 L/100 km. I was in quite a hurry, but my car probably wouldn't have used much more fuel even under those circumstances.