If an increase in a vehicle's fuel consumption is observed, what should be checked?
A)The cooling circuit and the lubrication circuit.
B)The exhaust circuit.
C)The ignition circuit and the fuel supply circuit.Correct
If an increase in a vehicle's fuel consumption is observed, it is necessary to check the ignition circuit and the fuel supply circuit. These systems are crucial for the proper operation of the engine and fuel consumption efficiency. Problems in the ignition, such as worn spark plugs or faulty wires, and in the fuel supply system, such as clogged fuel filters or dirty injectors, can cause an increase in fuel consumption.