I had a 2000 Focus station wagon. Really liked it. Drove great, versatile, what's not to like? Its reliability. Brakes squealed (wheels were actually rusted but dealer acted like that was normal), and air conditioner crapped out at 37 months, a month after warranty expired. Probably a seal somewhere, but of course dealer insisted entire AC had to be replaced for around $1,500.
Instead, we traded away the Focus. It's the last Ford I'll ever buy. Thinking back, I guess we had the usual variety of luck. One Pinto never ran right, another Pinto served us well, a Continental we bought with 90k on it gave us a taste of luxury but so many headaches we gave it to the mechanic in payment for its last repair bill. However, we had an excellent ultra reliable 1978 Fairmont station wagon I think is still running somewhere.
I hope you have much better luck with your Focus. A friend bought a 2001 Focus station wagon, has had good luck with it, and is still enjoying it. As the wheel turns ...