<prompt> Human: Roommate started his career with a decent pay on June 2013; In October of the same year, he was able to get his first credit card and started building his credit! One spectacular lifestyle inflation later, he drove away with a brand new 2013 Ford Escape Titanium 4WD - yes, the most expensive version. How was he able to pull it off? His dad who has a great credit co-signed his financing loan! How easy was that!?Payments started - CDN324 bi-weekly for 72 months 2.49.20 months later - so yesterday - his dad let him know how the cosign was hurting his credit and his ability to get a good rate on a new mortgage. Roommate visited Ford today to get him out of the cosign. They requested a 450 signing fee. Outraged and unable to pay for it yay living paycheck-to-paycheck!, he and his parents found another way: get the bank to finance the vehicle.Long story short, the bank gave him a shitty deal:312 bi-weekly for 60 months so 8 more months than original 5.49.And he was PROUD! I quote: My dad and I made some quick calculations... and turns out Ill be saving a few hundred bucks by the end! I pay less every paycheck, so its what matters.No! Do not do this, you brave people! I used Excel and it took me 1 minute of number-inputting to see that hell pay 3.5K extra by the end of the 60 months. Do banks always screw people over like this? Probably, I dont personally know. Anyway, ignorance is bliss... so I wont tell him about my discovery on Excel, I dont want to make him feel like shit - plus Im not sure if he had any other choice other than paying 450. At least his dad will be able to afford a great house!tl;dr Roommate would rather pay 12 less per month but for 8 months more so 3.5K more by the end of it rather than 450 today.  <response>: He isnt being screwed over. He is paying higher interest because he is a bigger credit risk as a sole borrower than he was as a co-borrower with his dad. 5.49 interest really isnt that bad for someone with a short credit history who can barely afford the payments on the truck. He better make sure he never loses his job or takes a pay cut in the next four years, though. Because if he does he is going to end up defaulting. 