I traded in a fully loaded Camry for my Yaris and have not regretted it for one moment. Not quite as powerful acceleration, but the gas mileage more than makes up for it and I'm not in that big of a hurry anyway. I can still enter the freeway without causing everyone behind me to stack up.
plenty of head room, handles well
sun visor extenders, arm rest, slightly larger cup holders, sunroof, automatic headlights