PLA
Pros:
+ Can be printed on a cold surface
+ Eco-friendly - made ​​from plants
+ More glossy and smoother appearance
+ Smells sweet when printing
+ No harmful fumes suppression
+ Prints in higher speed

Cons:
- Can be deformed due to heat (as in a car)
- Less robust than ABS


ABS
Pros:
+ Very robust and hard plastic
+ Suitable for machine or auto parts
+ High Melting
+ Long life
+ Smooth

Cons:
- Made from oil, therefore more harmful to the environment
- Deformes when not being print on a heated surface
- Hot plastic fumes when printing, petroliumbased
- Takes longer to print
-Tend to crack if cooled too quickly
-ABS is not safe to use for those products which may come into contact with food.