An 18-year-old Warrnambool man was intercepted by police on Moore Street about 3.50am on Saturday morning.

He was driving an overloaded ute - with three passengers - and did not hold a full licence.

Acting Sergeant Stuart Revell said the man did not have L-plates on display, nor did he have a supervising driver with a full licence.

In addition to that, he returned a positive reading for alcohol in a preliminary breath test.

Acting Sergeant Revell said the man later recorded a blood alcohol level of 0.082.

The man's learner permit was immediately suspended and he will be summoned to appear in court at a later date.

Acting Sergeant Revell said it was a concerning incident.

"The combination of multiple people in the car with an inexperienced driver and also alcohol in his system is alarming," he said.

The incident comes just days after two males were killed on south-west roads in separate single vehicle accidents.

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