The only thing that has been an issue is the driver's side door panel rattle. This is probably caused by me pulling the door shut on a poorly mounted door plastic panel by the manufacturer. Otherwise, I have not had an issue.
The material of fabric does cause a lot of static electricity, especially in less humid areas. But it does give me a good jolt in the mornings before work.
The plastic panels scratch very easy, so be aware of that.
The electric steering groans when I parallel park.
Horrible clunk when slowing down to a complete stop (automatic-high gear to low gear shift noise)
The seat are pretty comfortable, but unlike domestic cars, it doesn't sink in secondary to the firmer foam material. The driving position took a bit for me to get used to. One thing I do miss is the telescoping wheel, which would have made finding a sitting position a bit easier. The gauges are nicely laid out compared to the Honda Civic. I really hated the Civic when I test drove it, mainly due to the deep front dashboard and ugly gauges.
Driving impressions were very good, which is the reason I purchased this car. The suspension was a lot stiffer than what I expected from looks of the car. The acceleration was a huge plus. The engine has great torque for a car of this weight. I am 190lbs, my friend 250lb, and the sales person about 175, and I never had a problem merging on the freeway. The others (Yaris, Civic, Corolla, Fit, Jetta), all around the same price range, struggled with 3 heavy guys in the car.
One thing I dislike is the steering feel. When I make quick transitions, it seems like the steering input lags, and driving at lower speeds such as parallel parking, the electric steering does assist in a timely matter. It's almost like there isn't power steering if you steer too fast. I drive in the city, and parallel parking in a congested area must be done quickly, but this car is not designed for it. It almost the same as my 1989 Civic without power steering, but with a little more assistance. The transmission does shift properly, and does well with just 4 gears.
The most important plus about this car is the engine and transmission. The automatic transmissions on most Toyotas do not have a dipstick to check the level. That was a deal breaker for me since I do my own work on cars. Changing the transmission oil without a dipstick in a pain. Ask anyone.
This car on the other hand has this great feature. The engine is also great big for a car of this price range and size. It's better to have a bigger engine in a smaller car than the other way around.