Vibrations while driving can be due to multiple causes such as worn CV joints, tierods, steering or suspension parts, wheels out of balance, loose or worn engine/transmission mounts, bad bearings in transmission, misfiring engine, worn bearings in axles or driveshafts unbalanced, , etc.. A shop would have to do some inspections and tests of the various parts to pinpoint the cause or eliminate possible causes as being suspension or driveline related or engine/trans related. Try shifting into Neutral briefly when this vibration occurs and see if it goes away which might eliminate some sources as being the cause.

The fix could be something relatively cheap and simple, like a tire rotation or balance. Or it could signal more serious auto problems -- something more costly, like steering or suspension issues.

Alignment does not fix wheels and tires that are out of balance.

i think its pulley rotating, maybe belts are loose, go check it with a mechanic

Hi I have 2003 subaru legacy gt car vibrates wen going slow speed like stuck in traffic feel like going cut out vibrates going up hill motorway high speed 100+ can't feel vibration only feel vibration on main road not on motorway doing hight speed just got wheel alignment done still feel vibration