How long does it take to become efficient at playing the guitar?

The time it takes to become efficient at playing the guitar can vary greatly depending on several factors, including the amount of time and effort dedicated to practice, the learner's natural abilities, their learning method, and their goals. However, it is generally accepted that it takes several months to a couple of years of consistent practice to become reasonably efficient at playing the guitar. It is important to note that playing the guitar is a lifelong journey, and even experienced guitarists continuously work on improving their skills.