Took our older car here for a roadworthy check as we were looking to sell it. Cost $200 for the check, not the cheapest in the area, but thought I'd give them a go. The first thing they said without even looking at the car was "9 times out of 10 it will need a new windscreen - so it will need a new one of those". As a reasonable bloke, I let them say what they thought but didnt think it would need one, and i left the keys with them. 7 hours later calls me back with the report. Over $1000 of repairs needed. New windscreen- surprise. 4 tyres and a new rim. New muffler. An oil leak magically appeared. An odometer, because the old one stopped working. After investigating this later, the odometer is not a roadworthy issue. They also told me to call wreckers to find the part and go get it myself because they didn't want to. From what was considered a reasonable car, this seemed wrong. Prior to leaving the car at Cardinia Automotive, a mechanic friend of ours (although not a current roadworthy certified mechanic) had checked the car and said total $450 maybe. Did not need a new windscreen, or muffler, or all 4 tyres, or oil leak fix (because there wasn't one). Or odometer.
I told Cardinia automotive that because we were selling the car for $1800, doing $1000 of repairs was not worth our while.
Two weeks later we found a roadworthy mechanic who specialises in our type of car. Did check for $170. Came back with a report for $450 of repairs. No windscreen. No muffler. Only two tyres. No odometer. No oil leak. Did all the repairs no problems. Sold the car.
Their office was a mess. Overall presentation of the building suggests they dont really care. I won't be going back. Obviously. Suggest you don't either.