I have a Toyota Passo Moda, a 2016 model with over 100,000 kilometers on it. Despite having performed several maintenance tasks, I'm still experiencing issues with the car stalling, and the fuel efficiency is only around 8.5 kilometers per liter.
I have already addressed the following maintenance tasks:
Replaced the spark plugs.
Serviced the throttle body.
Cleaned the catalytic converter.
Changed the gear oil.
Changed fuel pump.
However, the stalling issue persists, and I'm getting poor fuel efficiency. What could be the underlying reasons for these problems?
