My '05 Focus has been prone to maintenance issues.
Despite following the scheduled maintenance guide and having less than 50,000 miles, the transmission has gone. The cause, according to the mechanic, is wear and tear on a band, and nothing could have been done to prevent it.
Twice, the alignment has gone out.
No cause was given.
The car is comfortable, gas mileage is reasonable.
Heats up quickly in the winter, cools quickly in the summer.