One problem related to tank assembly has been reported for the 2006 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Sequoia based on all problems reported for the 2006 Sequoia.
Gas gauge drops to below empty when tank is 1/4 full. This has happened on several occasions, mostly from startup. Distance to empty indicator shows actual mileage left, but rapidly deteriorates to 0.