Getting an RWC in Melbourne
The rules are the same across Victoria, so a tester in Werribee and a tester in Ringwood work to the same standard. What changes is the wait and the trip. Across a city this size, it's worth finding a tester close to where the car sits, because a car with a known fault is one you don't want to drive across town.
Some testers are workshops that can fix what they find on the spot. Others come to you. Ask which when the tester calls, because a car that fails is simpler to sort out at a workshop that can also do the repair.
What Melbourne sellers run into
The 30-day clock
A car listed in a slow month can outlast its certificate. In a market this size most private sales move quickly, but if you're asking top dollar, plan for the chance of a second inspection.
Street-parked cars
Plenty of inner-suburb cars live on the street and do short trips. Old batteries, worn wipers and tyres gone hard from sitting are common things to check before the tester sees them.
Cars from out of state
If you've moved to Melbourne and are registering an interstate car in Victoria, ask the tester what your situation needs before you book, and check with the Victorian transport department.
What we'd do
We'd fix what we already knew about, clean the car, list it, and get the RWC that same week. Use the postcode where the car actually is, and if you know it has a fault, say so in the note: the tester can tell you whether it's worth repairing first.