Loans are an interesting topic. I will tell you what I did, and what I will do next time, which is different.
I got a loan from the dealer, which I know is not the best way to go. When you take out your loan, you are given the choice of how many payments you want to make to pay off this loan. Every time I have gone through this process regardless of the loan's purpose, I have been shown a chart showing:
1. Number of Payments
2. Amount of Principle
3. Amount of each individual payment
4. Total amount of interest/service charge which will be incrued
By looking at this chart, you can see exactly how the number of payments you choose effect the amount you pay on top of the principle. I chose 12 payments to keep the interest to a reasonable low.
The next time, I will go to a bank and take out a car loan. I understand that bank loans charge less in interest. I have never taken out a loan from a bank, though, so I don't know what that's like yet. I have always gone through Central Finance, which I am pretty certain doesn't operate in your neck of the woods, Ewok, and one other company, but I forget its name.