At the beginning of 2021 Tesla had a PE of almost 1400. In January of 2022 it has gone down to 300.
But the real numbers you really want to look at is how Tesla PE move from quarter to quarter.
Tesla is growing so fast that looking 12 months back to get a PE ratio will give you a false picture.
Net income per quarter is shooting up:
Q1: 430 million
Q2: 1.14 billion
Q3: 1.62 billion
Q4: 2.32 billion
The real PE right now based on the Q4 2021 result is 101.