You take your chances with used. It can be hard to find a clean low mile one for a fair amount.

Just saying I would rather put down a small chunk for a truck on a start-up and take my chances with repairs. Sometimes you can put off repairs more then the monthly payments. Plus you would not have to get full coverage. Starting out you may have more free time then you think. Maybe some repairs you can do yourself.

A 20K loan at 8% for 60 months is $405 per month with $4,331 paid total in intrest.

Guess it also depends how much work you have lined up. You never said were your at or the type of work your looking to do.