2012 Toyota Tundra fuel system problems
27 complaints about fuel system have been filed for the 2012 Toyota Tundra, which is 12% of all its NHTSA complaints. It is the 2nd most reported problem area for this model year.
At a glance
- Complaints
- 27 12% of this year's complaints
- Typical mileage
- 77,000 miles 21 complaints with mileage
- Crashes and fires
- 0 and 0
- Injuries and deaths
- 0 and 0
Source: NHTSA owner complaints
When fuel system problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 5 |
| 20k to 40k miles | 1 |
| 40k to 60k miles | 2 |
| 60k to 80k miles | 5 |
| 80k to 100k miles | 5 |
| 100k to 120k miles | 2 |
| 120k to 140k miles | 1 |
| 140k to 160k miles | 0 |
| 160k to 180k miles | 0 |
| 180k to 200k miles | 0 |
| 200k+ miles | 0 |
What the data shows
Of the 21 fuel system complaints that report mileage, the median is about 77,000 miles, and 38% were reported before 60,000 miles.
None of the fuel system complaints mention a crash, fire, injury or death.
What owners wrote
Flex fuel models sold by gulf states toyota have an issue where the engine's computer thinks there is e85 fuel (or an alcohol concentration that is much higher than actual) in the system when there is normal 10% or less gasoline actualy present. This can cause rough cold starts/idle, power loss, sudden rpm/power dropout, missing, and lessened fuel economy, etc. (different symptoms for different trucks). At this time there is no final fix and no available service bulletin.
The contact owns a 2012 Toyota Tundra. The contact stated while accelerating from a stop, the vehicle started leaking fuel, and the contact smelled an abnormal fuel odor. The contact turned off and restarted the vehicle, and the fuel leak stopped. The vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the fuel tank valve assembly needed to be replaced. The vehicle was repaired; however, the failure persisted.
Other problems reported for the 2012 Toyota Tundra
- Engine 60 complaints
- Drivetrain & axles 21 complaints
- Electrical system 20 complaints