does cruise control save gas? Different Conditions

Does cruise control save gas? When driving on flat roads without significant differences in height, you can reduce consumption by 5-7%. In city conditions or when driving on hilly terrain, the amount of fuel consumed even increases. Below we will consider what are the features of the use of climate control, whether it can be used to reduce fuel consumption, and what other effective methods are used to solve the problem.

does cruise control save gas

ECO mode cruise control

On the one hand, eco-driving is not that difficult, and if you have a few habits, you can achieve great results, i.e. low fuel consumption and increased range per gas. On the other hand, you can easily get lost and struggle to survive normal driving.

For example, air conditioning can increase fuel consumption by one, two, or even three liters of fuel per 100 km. Of course, this should be used wisely to minimize consumption, but giving up the pleasant cold on a hot day in exchange for saving 5-10 per 100 km is a huge exaggeration because we not only reduce our comfort and passengers but also risk its safety the heat negatively affects the reaction of the driver, his mood, in extreme cases it can lead to fainting, etc. Other equipment also affects fuel consumption, for example, radio, audio system, lighting, etc. Does this mean that should you refuse?

It is much better to take care of the proper condition of the car, use its functions and systems wisely, and follow a few obvious rules. Dynamic driving increases fuel consumption, but this does not mean that you should drive, and at 50-60 km / h, driving in 5th or 6th gear is pointless.

Relatively fast achievement of the set speed will allow for a long movement with a constant value of rotation in the optimally selected gear, which significantly reduces wear. In addition, it is good to close all windows (open windows increase air resistance), empty the luggage compartment with unnecessary ballast, use the air conditioner with common sense (avoid maximum power and lowest temperature), monitor the correct tire pressure and, if possible, brake the engine, for example, reach the light. Here you want to know Is It Bad To Always Drive In Eco Mode?

does cruise control save gas?

When considering how cruise control affects fuel consumption or it saves gas, it is not clear whether consumption is increasing or not. When using the option, comfort is definitely increased, but the issue of savings must be considered through the prism of operating features. 

For a better understanding, consider several options.

Use of cruise control in City at high speed

If the car has a standard cruise control without additional options, and the movement takes place at high speed and outside the city, the savings are real. The reason is that enabling the option allows you to avoid unnecessary movements on the track. The system automatically maintains one speed, and the driver does not spend extra gasoline/diesel fuel on overtaking, speeding up, or slowing down.

When using cruise control, fuel economy will be, although insignificant, noticeable for the car owner. After disabling the option, the driver will not be able to maintain one speed for a long time, and this will inevitably lead to decelerations and accelerations.

When answering whether it is possible to save money, the psychological factor is additionally added. After enabling the function, the driver will no longer press the gas to the stop and starts to work smoothly with the pedal. Instead of constantly racing with other road users, it is easier to set a fixed speed and calmly drive 100-110 km / h in the right lane.

Use of cruise control on hills

When driving on hilly terrain, cruise control fuel consumption may even increase. The system does not save fuel due to its nature of the system. This is due to the fact that when moving uphill, the device tries to overcome the resistance and maintain it at a set level. To do this, the throttle valve is opened, and the supply of fuel to the combustion chamber is increased.

When descending, the cruise control is forced to apply the brakes to slow down and prevent acceleration. It turns out that the system again does not save fuel in the proper mode. To the question of whether it is possible to achieve lower consumption with self-management, the answer is yes. For example, when driving downhill, the driver can coast at speed, and when going uphill, downshift.

adaptive cruise control

Now consider whether the use of cruise control allows you to save fuel in the presence of an adaptive system. A car with this option has satellite navigation, which allows you to predict future changes and respond to them. For example, if there is a car in front, the system gives a command to reduce speed, followed by an acceleration to a set level. With this approach, cruise control saves fuel a little, because all actions are predictable.

With the “drift” option, the question of whether fuel consumption can be reduced is also relevant. Including when driving on hilly terrain. At the same time, cruise control really saves gasoline, unlike the use of a classic system.

A practical answer to does cruise control save gas?

To get an answer on whether cruise control saves gas or not, it is necessary to conduct an experiment and perform the necessary measurements. 

Let’s consider one of the real tests. Initial conditions:

  1. Distance – 100 km.
  2. Engine size – 1.9, turbodiesel.
  3. Gearbox – manual transmission, 6 steps.
  4. Movement speed – 110 km / h.

With these conditions, measurements were taken with manual control and when using cruise control. In the first case, the average consumption was 5.3 liters per “hundred, and in the second – 4.7 liters. With this in mind, it is easy to conclude which cruise control fuel consumption is more or less.

In the experiment above, it is easy to infer whether consumption has changed. It decreased by 0.5 liters per 100 km. At 1000 km it will be 5 liters. As you can see, the system saves fuel slightly, but this advantage should not be ignored. If the experiment had taken place in a mountainous area, such results would hardly have been achieved.

how you can save Gas?

How You Can Save Gas?

While there is no definite answer, the consumption of cruise control is more or less. On flat roads and long distances, the system saves fuel, but in city mode or hilly terrain, the situation may be reversed.

Is there any other way to save gas and money? In addition to cruise control, you can use a number of other ways to reduce fuel consumption:

  • Observe the speed limit and do not abuse the sudden decrease/increase in speed.
  • Try not to drive during rush hour when there is a lot of traffic. In this case, cruise control does not save fuel, and the overall consumption increases significantly.
  • Learn to accelerate as smoothly as possible when driving at any speed. This is especially true for picking up speed at a traffic light when you want to compete with other cars.
  • Try not to abuse the brakes so as not to pick up speed once again and not waste gasoline.
  • Switch gears in time.
  • Do not abuse the engine for a long time. 30 seconds is enough to get going.
  • During prolonged downtime, for example, in traffic jams or at a railway crossing, try to turn off the engine.
  • Close windows and sunroof to reduce drag while driving.
  • Turn off climate control when you don’t need it. the decision whether to use it will be applied taking into account the temperature.

There are other ways to reduce fuel consumption if the cruise control does not save it as much as it should. Alternatively, you can remove excess weight, warm the engine in the winter season, control tire pressure, change filters in a timely manner, and use the right engine oil. In addition, fill up only with high-quality fuel, use gas station bonuses, etc.


Now you know whether cruise control saves gas, in what cases it is possible to achieve greater efficiency, and which of the methods can still be used. When driving on a high-speed road, such a system becomes a real salvation. It increases the level of comfort and allows you to really reduce fuel loss. When driving on hilly terrain, the option no longer saves fuel, because the system has to supply more fuel to the combustion chamber.

It is better to choose driving without overtaking, even if it is active cruise control. We not only save fuel, but also increase the level of safety.

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