PETG filament has the reputation of combining the functionality of ABS (stronger, temperature resistant, more durable) and reliability of PLA (easy to print) in one material.
The layer adhesion is usually excellent.
Reduced potential of warping or shrinking of your prints.
Also, you can recycle the material, along with prints and misprints. However, don’t take this as permission to start printing irresponsibly – sustainably speaking, PETG filament is still a plastic that should be utilized and recycled properly.
FDM printing, PETG vs PLA: what differences in FDM 3D printing?
PETG compared to PLA, PETG is generally higher in Physical strength
PETG filament is more transparency
you can do 3d printing use PLA without a heated bed, but PETG requires a bed temperature of around 50 to 70 ºC.
PLA warps less and adheres better to the bed than PETG with the same bed temperature.