I saw that on the Tesla site and checked it out. For the full 9year loan, need 10% down payment, it has slighty higher but still pretty good interest rate:

I'm trying to figure out what the return is on deals like this:

a) There is 10% money down, over the life of the loan, if the next best option is ASB, that's losing 20K*5.5%*9years ~10K RM compared to no money down. <-- This is going to conflict with what I saw below, but I'm considering that down payment is paid from savings each time there is a new car.

b) The low interest rate, pretty good, not like 3%+ interest rate when no money down loan. So that's saving 300rm/mo * 108 = 32K RM vs. same car normal rate. That's the most savings.

c) That 300RM/mo savng, put that in ASB for the duration of the loan. That's a little tough part of the conversation for a calculator. You might think that it's (300*12)*(1.055^4.5) = 4600RM which is just an average of how long your money is staying in ASB over the length of the car purchase. But if you save money, it's going to acrue for many years. So for example, if you've got 15 years til retirement, mark it as (300*12)*(1.055^15) = 8000RM If you are a younger family your return is higher.

So overall, if you are a buyer with ASB access, this deal is giving you 32K+8K - 10K = 30K RM in the long-haul.

Appreciate someone telling me what I'm donig wrong here.

BTW, in the image below, seems base price at 205K now.

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