From time to time, the car doesn't seem to have the willingness to accelerate. I checked the parking brake and it is off, and the engine is hot. The only good thing is not like my 2010 Corolla that doesn't slow down when you released the brake pedal. I am talking about on a flat surface, the Corolla doesn't even slow down. They both have acceleration problems.

Update from Dec 29, 2013: Including the hesitation of acceleration of the car, Dealership told me it changes oil only every 10000 miles because of the oil is synthetic. It is fine only if the oil is good for 10000 miles. At 6000 miles, the motor oil is dark, and the oil level already dropped 1/3 of a quart after I went to dealership at 4800 miles. No way, no where this oil can be good for the car for 10000 miles. Toyota is getting cheap on their 2 years/24000 miles maintenance free service. Well, it is their policy and I cannot argue, but it is cheap.

Update from Jun 3, 2014: Toyota cars having slow acceleration problems when compare to other cars with same or just a little smaller size engines.