One problem related to tank assembly has been reported for the 2007 Toyota Yaris. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Yaris based on all problems reported for the 2007 Yaris.
Vehicle's computerized gasoline full/empty equipment collapsed while driving the highway, and vehicle running suddenly shut down not able to start again in the middle of the road. Fuel console showed the vehicle had 1/2 tank fueling but would not start. Vehicle towed to Toyota car dealer. Dealer replaced the whole computerized fuel warning system. Gas tank was entirely empty however showed that had 1/2 tank fuel.