Table 1 shows two common power train related problems of the 2015 Toyota Sienna. The number one most common problem is related to the power train (eleven problems). The second most common problem is related to the transmission failure (one problem).
| Problem Category | Number of Problems |
|---|---|
| Power Train problems | |
| Transmission Failure problems |
On April 15, 2026 report filed with NHTSA from an accident-causing property damage due to a failure in the shifter mechanism while the vehicle was parked, ignition off, no keys in the vehicle and the brake pedal was not pressed. Read details...
The contact owns a 2015 Toyota Sienna. The contact stated that the vehicle was not driving normally and it felt as if the transmission were failing. The vehicle was taken to the dealer where it was diagnosed that the transmission failed due to a minor crash in which the contact was involved. Read details...