35.87. The use of the air conditioner while driving affects the operation of the vehicle, namely:
UAВикористання кондиціонера під час руху впливає на роботу автомобіля, а саме на:
This exam question from the Traffic Rules of Ukraine concerns the practical operation of a vehicle and the impact of additional equipment on its performance. In real driving conditions, the driver must take into account that comfort systems, such as the air conditioner or climate control, do not operate “for free” for the engine: they create an additional load, which indirectly affects fuel consumption and environmental friendliness, and therefore is important for everyday safe and rational driving.
In essence, this question checks understanding of Section 31 “Technical condition of vehicles and their equipment” (item 31.1) in the context of traffic rules and technical operation requirements, as well as the logic of the driver's duties regarding monitoring the serviceability and proper use of equipment (Section 2, item 2.3). The theoretical exam covers a basic principle: the operation of the air conditioner takes part of the engine’s power (through the compressor), so to maintain the same driving mode, the engine has to burn more fuel, and consumption increases.
The analysis of the answer options is straightforward: increased fuel consumption is a direct and typical consequence of the air conditioner being on, which is confirmed by practice and measurements (the increase may vary depending on temperature, settings, speed, load, and car model). A change in speed is not a mandatory effect in itself: the car can travel at the same speed, just with higher consumption, if the driver maintains the driving mode. The stability of the vehicle while driving is not directly affected by the air conditioner, as it does not influence tire grip, suspension, or weight distribution enough for it to be a key factor in the traffic rules.
Clause 31.1 (Section 31 "Technical condition of vehicles and their equipment")
The technical condition of vehicles and their equipment must comply with the requirements of standards related to road safety and environmental protection, as well as the rules of technical operation, manufacturers’ instructions, and these Rules.
Brief application: the operation of the air conditioner/climate control pertains to the use of vehicle equipment and is determined, in particular, by the manufacturer’s instructions; from a technical point of view, this creates an additional load on the engine and, as a result, increases fuel consumption (this general technical pattern is what the question checks).
Clause 2.3 (subclause "a") (Section 2 "Duties and rights of drivers of motor vehicles")
The driver is obliged: before departure, to check and ensure the technical serviceability and completeness of the vehicle, and the correct placement and securing of cargo.
Brief application: although the clause does not directly mention "fuel consumption," it binds the driver to the proper operation and control of the technical condition/functioning of equipment; the air conditioner is a consumer of engine power and, when used (in working condition), the typical consequence is increased fuel consumption.
Therefore, the correct answer is "Fuel consumption," given that, according to the Traffic Rules, the operation of vehicle equipment must comply with the rules of technical operation and the manufacturer’s instructions (clause 31.1), and the air conditioner creates an additional load on the engine, which technically leads to increased fuel consumption.
While the car is moving, the air conditioner is not a “neutral” option. To cool the air in the cabin, the air conditioning system must operate continuously: the air conditioner compressor turns on and creates an additional load on the engine.
When the engine receives an additional load, it needs to produce more energy to maintain the same driving mode. In real conditions, this means that to maintain speed and dynamics, the car is forced to burn more fuel. That is why the onboard fuel consumption indicators usually increase when the air conditioner is on, especially in hot weather or when the system is working intensively.
In practice, the impact can be noticeable in different ways: depending on the outside temperature, climate settings, engine power, vehicle load, and driving speed. But the general principle remains unchanged: the air conditioner takes part of the engine's power, and additional power in an internal combustion engine almost always means additional fuel consumption.
Therefore, the correct answer is "Fuel consumption," since a running air conditioner creates an additional load on the engine, and more fuel must be burned to maintain movement.