How do you connect an iPhone to a Toyota Sienna?

I just purchased my first car, a 2011 Ford Fiesta. I want to stream music from my phone instead of listening to the radio. Is there Bluetooth music on the 2011 Fiesta?

My uncle and his partner want to sell me their used car for cheap, but there’s a problem: they say it needs new fuel injectors. That’s why they’re asking for a smaller amount. I don’t know what that means or how much they cost to buy. So how much does it cost to replace fuel injectors?

I recently replaced my car stereo and rewired the whole system, but now there’s a whining noise coming from the speakers. My friend, an avid musician, says it sounds like a ground loop. Is there a way to fix the ground loop noise in my car?