There were 4,417 Model 3 registrations in Australia in Q1 2022 according to
this article. I estimate zero in Q2 and Q3 and then maybe 7,000 in Q4.
For Model Y, I estimate 5,000 in Q3 and 7,000 in Q4.
This pessimism about Q3 deliveries is unwarranted - because a calculation of M3 order backlog numbers and clearance rates/times shows that there has to be deliveries in Q3 if Tesla's current delivery estimate is accurate.
Let's look at the numbers.
From Q1 deliveries we know that our current quota is about 4500 M3 per quarter. At the end of Q1, delivery estimates had increased to 6 to 9 months, indicating a backlog of at least 9000 orders, ie 2 quarters to clear. The large increase in delivery estimates also shows a large increase in order numbers for Q1 above the 4500 quota.
The worst delivery estimates in June before the MY order opening was 9-12 months for a calculated 13500 order backlog.
M3 orders in Q3 will be lower than Q1 orders because of the MY effect, but probably still of the order of 5000 cars - as delivery of M3 improved by only 1 month after MY
If there are no deliveries in Q3, then the backlog at the end of Q3 will be over 18,000 M3s.
The upgrades will increase GF3 M3 output from 5500 to 7700 per week, an increase of 40%. If Australia's proportion is similar, then deliveries will increase to about 6000 per quarter from the Q1 high.
So a new order now can only be delivered after the 18000+ backlog has been shifted - after 3 full quarters at 6000 per quarter starting Q4, so the current delivery estimate should begin at Jul 2023, but it is actually 5 months earlier at Feb 23.
So something doesn't add up. My optimistic take is the we will get deliveries of at least 5000 M3s in Q3. Which allocation they will come from, I don't know, but they have to for the dates to work.
The above calculation assumes that Tesla's historical delivery estimates were done at 4500 per quarter. If they had knowledge of the upgrades, then the actual backlog has been even larger and deliveries in Q3 need to be larger.
Helpful criticism of the above estimates welcomed.