One problem related to accelerator pedal has been reported for the 2003 Toyota Matrix. The most recently reported issues are listed below.
Consumer was pulling into a parking space and the vehicle accelerated while consumer's foot was on the brakes, striking a tree on the front passenger's side. Upon impact, frontal airbags did not deploy. Consumer contacted Toyota ,and it was inspected by a representative and no defects were found. Vehicle was sold for parts.