2002 Jetta Eats Gas?

Hi All, I have a 2002 Jetta gls (basic model) since she reached around 100kms I noticed that she was eating oil, it is not burning it, or leaking it. Is this normal have been told by some that it is?? seems weird to me. i am doing about 350kms a day on it, and the oil is being changed between 3000-5000kms.
When I bought this car brand new had major problems with the engine light coming on, 3yrs later and many appointments it was fixed after they replaced the transmission.
Can someone help

Thx
V