Imagine driving at 135km/h past Parliament House at 2am on a Tuesday, leading police on a pursuit, failing to provide a valid licence, blaming your behaviour on a lack of antibiotics and getting away with it.

That's exactly what happened to one diplomat at the royal embassy of Saudi Arabia who used his immunity to escape a $1811 fine and six demerit points.

His exploits are just one chapter in the latest chronicle of diplomats behaving badly, dutifully archived by the Department of Foreign Affairs and Trade and released under freedom of information laws.

Another Saudi diplomat was caught speeding through an intersection at 107km/h in an 80km/h zone. Officers attempted to stop him as he approached, but he sped right past them.