Drivers have been warned about hazardous odors inside the car.

Thus, a malfunction may be indicated by a smell that arises during engine warm-up. Generally, this odor dissipates shortly after the trip begins.

The first thing it may suggest is the presence of fuel in the exhaust system. This, in turn, is caused by a malfunction in the electronic control unit, which regulates the fuel dosage. The third link in this chain is a faulty sensor that measures the amount of air entering the cylinders. The issue can be resolved by adjusting or cleaning the sensor. If the smell is absent during the next engine start, there is no reason to worry.

One should be cautious if white smoke is visible inside the car. These vapors have a sweet scent and indicate that antifreeze is burning in the cooling system. A blown head gasket (HGC) may be the cause of the leak in this case. The second possibility is micro-cracks in the engine block itself. An experienced mechanic can help assess the feasibility of the upcoming repair — it does not guarantee a long engine life, and the procedure may cost as much as a new unit.

A strong smell of exhaust fumes in the cabin indicates a motor oil leak. Additionally, dark gray smoke typically begins to pour from the exhaust pipe immediately after warming up the vehicle. Sensor readings will clarify the situation: if there is an increased oil consumption, it is urgent to visit a service station. Neglecting diagnostics in this case is not advisable.