Table 1 shows four common other fuel system related problems of the 2021 Toyota Highlander. The number one most common problem is related to the other fuel system (19 problems). The second most common problem is related to the other fuel system tank assembly (eight problems).
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Tank Assembly problems | |
| Other Fuel System Tank Filling/charging problems | |
| Other Fuel System Tank Mounting problems |
On July 25, 2026, while driving my 2021 Toyota Highlander hybrid at high speeds on the freeway, the vehicle experienced a sudden loss of drive power accompanied by a check engine light and a severe hybrid system error warning. Read details...
Highlander has same issue as the 2019-2020 Toyota rav4 fuel issue identified by the NHTSA: vehicle fuel gauges displaying less than full and/or total fuel dispensed is less than expected, when the fuel nozzle automatically clicks off. Read details...
I reported my gas tank not filling past 12. 9 gallons of gasoline on numerous fill ups on my new 2021 Highlander hybrid platinum to Toyota service department. The Highlander on invoice says it�s a 17 gallon tank capacity. Toyota service depart refilled my empty tank to12. Read details...