Two police officers have narrowly escaped injury after their car was repeatedly rammed by a stolen vehicle in the early hours of Friday morning.

The incident has sparked fresh calls for new laws to punish offenders who intentionally ram police vehicles in what the police union has dubbed "an alarming trend".

This police car was rammed in Warrnambool a week ago. Credit:Amy Paton

Officers were conducting a routine patrol in Melton in Melbourne's west about 2.30am on Friday morning when it's alleged they noticed a man standing next to a stolen Nissan Tiida, registration UTG 411.

Police approached the man, who then got into his car and allegedly reversed into the police van "several times" before driving south on Station Road, a police spokesman said.