BASED ON THE LOW RATE OF FUEL SPIT-BACK INCEDENTS (14.3 INCIDENTS PER 100,000 VEHICLES SOLD), A LOW WARRANTY CLAIMS RATE OF 0.02 PERCENT, AND THE LACK OF ENGINEERING INFORMATION THAT WOULD SUPPORT THE PRESENCE OF AN ENGINEERING DEFECT, A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.