2016 Toyota Avalon Engine problems

Engine hesitates for a few seconds when starting from a stop or a slow speed in city traffic. The dealer said it was a computer learning process and it should go away. Problems has been around since new in 2016.

Tl* the contact owned a 2016 toyota avalon. Approximately 30 minutes after parking and turning the engine off, flames were discovered coming from the front driver's side carpet. Approximately 10 minutes later, the vehicle was engulfed in flames. The fire department was called to the scene and extinguished the flames. There were no injuries and a police report was not filed. The vehicle was towed to an undisclosed location and deemed destroyed. The cause of the failure was not determined by a dealer or an independent mechanic. The manufacturer was notified of the failure. The vin was not available. The failure mileage was 22,000. *Ln

My wife's avalon hesitates for 3 or 4 seconds intermittently during acceleration without warning. The yellow triangle light comes on the dash board during the hesitation. I seems to occur more often after turning left and accelerating. I am concerned about her safety when entering traffic and or crossing a road with an unexpected hesitation. Our local toyota dealer says they are not aware of this kind of problem and are not able to diagnose it. We would like to know if this is occurring else where and what we should do about it. Please advise.

Took delivery of vehicle with 3 miles on january 27, 2016. Very next day the vehicle would not start without several attempts. On january 30 the vehicle was stopped in a parking lot while on errands and would not start after attempting for 15 minutes. Dealer service department advises that there is a drain on the battery when there should not be. Vehicle has been with service technicians for the 3rd day and they have yet to identify the root cause. The vehicle has 212 miles and I am fearful that an electrical problem will cause fire and severe safety issues.