Question: can a jetta tdi pull a trailer?
Answer: In Europe, the VW Jetta Wagon TDI (or as they are known there, Golf Combi TDI) are commonly used to pull all sorts of trailers, I have even seen them pull camping trailers. So, as long as you get a properly fitted hitch and stay within the towing/weight capacity and use some (un)common sense, you should be fine.