Mine had similar problems at about 50000 miles. There could be many things, but mine was a bearing in the drive system between the engine and transmission. The first step is to determine where the whining is coming from. You can use a stethescope to help with that. If it's from the left side in the housing behind the engine, then maybe you have the same bearing problem. It could also be the power steearing pump, check there too.
whining
Transmission is low of lube.
The fuel pump on my 2005 Grand Caravan SXT made a whining sound on long trips in hot weather. I had it replaced and haven't heard it since.
A worn out clutch release bearing would cause a whining sound when you put your foot on the clutch.
The loud whining sound could be wheel bearings going out. However, it is also possible that the speedometer bearings or cable are defective.
For me it was the idler pully. A pretty cheap part. $15 I think. And only an hour or so to change. The problem was the bearing in it was shot. It would make a whining sound that got louder/higher pitch as the engine revved higher.
Your child in the backseat.
possibly your wheel bearing is on its way out
High pitch sound could be your superchager. Turbo's shoot out a spit of air sound. Maybe your jetta is supercharged stock. Espically if its a tiptronic transmission.
something may be rusty
sounds loke the wheel bearings are going out
yes it will.