When the fuel level in my car comes to the red zone I feel the running more heavy, the car needs more throttle and is more difficult to gain speed. Is this something normal??
How old is your vehicle? Diesel or gasoline?– DanielJan 17, 2019 at 14:27
@Daniel Peugeot diesel year 2006– TeoJan 17, 2019 at 14:30
Was the fuel filter ever changed?– DanielJan 17, 2019 at 14:32
@Daniel yes 6 months ago– TeoJan 17, 2019 at 14:33
And did the problem only occur after that?– DanielJan 17, 2019 at 14:35
The fuel tank might be dirty, causing issues with the fuel pump picking up enough fuel.
Also, some vehicles don't like been driven on empty tanks and this can often result in poor performance or stuttering as you attempt to accelerate.
I'd have the fuel tank removed and cleaned. I would also replace fuel filters for good measure.