Mine was also a Vega.
Engine - Lousy design. Almost 100% would start burning oil before 100k miles. Most at before 50k miles. And there was a simple fix. Steel Sleeve the cylinder walls.
Transmission - Premature failure on ALL of the transmissions in this vehicle. I had the 4-speed manual which I had to rebuild at 10k miles after I rebuilt the engine.
Premature Rust - No inner fender wells. Dirt/salt and water had many places to pool on this car. Mine started rusting with 2 years of ownership.
Again I’m with MB on this one. I actually liked the car. It was very stylish for it’s time…and fun to drive.