For this challenge you can use the same drift zone 3 times. But if like me you're terrible at drifting, here's the easiest way to get it
Car - 1974 Toyota Celica GT
Tune - Don Joewon Song
Assists - Manual transmission, TCS and STM off
It might seem odd using a C class AWD car for this, but if you pick something powerful and rwd chances are you'll just keep spinning out. Now head to the Reservoir Drift Zone, directly south of where it says Maroondah Reservoir on the map, since this is one of the easiest and crucially has very little in the way of traffic which can mess up your run. I found it much easier to head westwards into it, since there's a lovely gentle bend that can really help you to wrack up the points.
As for how to drift, throttle control is key. Tap the handbrake for the first turn to get the back end out, but after that rely on the throttle. Gently module
as needed and keep it in 2nd gear. Slow and steady is far more effective than throwing the car in ith your foot to the floor. You need 50,000 points to get 3 stars. Good luck!