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Additionally, in heavy traffic or urban driving conditions with frequent stops and starts, the constant engagement and disengagement of cruise control may not yield significant fuel savings. Studies have shown that maintaining a consistent speed with cruise control can indeed be beneficial for fuel efficiency. For instance, a Natural Resources Canada study highlighted that using cruise control at a constant speed can consume significantly less fuel compared to varying speeds. These savings are often more noticeable on long highway drives without frequent stops or changing traffic conditions.
Does Cruise Control Save Gas? Benefits, Tips, And Myths
When the road ahead clears, Adaptive Cruise Control automatically returns to your pre-set speed. Hi, I'm Chris Brunson, and I'm passionate about diesel fuel and all things related to it. With over 5 years of experience in the industry, I've gained a deep understanding of diesel fuel properties, engine performance, and fuel efficiency. Through this blog, I hope to share my knowledge and insights with fellow diesel enthusiasts and provide a platform for discussion and learning. Many people believe that cruise control is only beneficial for long trips and has limited use in shorter journeys.
Don’t use it during bad weather
However, getting ACC for your car often costs more, so consider your budget too. The cruise control system relies on a speedometer and a servo mechanism to work. When you set a speed, the system maintains it by controlling the throttle. If your car goes slower than the set speed, like going up a hill, the system increases throttle to speed up. When going downhill, it reduces throttle to slow down, keeping your car at the same speed you set.
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Fewer speeding violations
For instance, revving your car and keeping the engine spinning at high RPMs will only burn more fuel. On the other hand, if you drive at a lower RPM level, the engine will burn less fuel, especially in a longer drive. That’s why the cruise control setup can kick in quite well in helping you waste less fuel while driving on the highway. Additionally, the cruise control system is often designed to operate more efficiently than an average driver, making subtle adjustments to optimize fuel use. However, its effectiveness can diminish in hilly terrains or congested traffic, where the system may need to overcompensate, potentially negating the fuel-saving benefits. You could make an argument that tractors had cruise control much earlier than cars did.
Mending your ways will save money even in times of low gas prices, as it will cut your spending on insurance rates and speeding tickets, too. With a cable, the driver could set a desired speed, and the car would maintain that constant speed, regardless of hills. The primary purpose of cruise control is to level out the speed of a vehicle and give drivers a reprieve from pressing the gas pedal on long journeys. Cruise control is beneficial when you’re traveling in your car, truck, or RV.
We are an automotive mechanic blog that helps mechanics and car users to find the most recent and accurate technical and repair information for their cars. We created this blog site in 2018 to enable us to share our knowledge with other automotive mechanics and car owners. Driving in the rain is risky as the oil and grease on the road will be on the water’s surface, causing the road to be slippery. Using cruise control when climbing a hill can cause the engine to have multiple transmission shifts, making the transmission fluid overheat and eventually cause wear.
Is cruise control bad for your car?
Even the earliest gasoline-powered tractors had a hand throttle that allowed a farmer to set a constant speed while he was otherwise occupied looking over his shoulder at his cultivator. That alone could make a difference to a passenger who experiences car sickness. However, the exact amount can vary from vehicle to vehicle due to size, speed, and road conditions. Hills and changes in elevation during your trip will also have a big impact on your fuel economy.
Your car’s cruise control is run off engine vacuum and electricity, so there’s no gas being used to power it. Of course, if you have an electric car, using the cruise control will be an additional drain on your battery and that could reduce the range. Although cruise control systems are becoming increasingly advanced, they can’t read the road the way a driver can or react as quickly. When you see something like a hill or slow traffic ahead in the distance, you can make adjustments in plenty of time for a smoother, more efficient drive. Cruise control isn’t that smart (yet), so it will inevitably react later which could mean harder braking and accelerating and more fuel used.

Then you add passengers, luggage, or other items, and that adds further weightand means even more work to do. That said, don’t drive with two feet (left foot over the brake, right foot over accelerator). Instead, keep your right foot near (not resting on top of) the brake pedal.
So, you can even reduce wear and tear on your engine components by making use of this convenient driving feature. Cruise control was a big deal in the automotive industry back in the day, as it made the first step towards autonomous driving. Well, at least it does so with the latest forms of adaptive cruise control, but you can enjoy the benefits of standard cruise control in your everyday driving. Drivers should avoid cruise control entirely in bad weather, including rain, sleet, and snow, but the reasoning for this is often muddy. A Google search will result in a whole lot of uninformed opinion based on flimsy understanding of how cruise control actually works in a modern vehicle. Whether gas is $5 per gallon or $2 per gallon, there’s no reason to waste any of it with all of the advanced technology at our disposal.
In fact, the main reason cruise control is fitted to cars is simply as a driver convenience feature. Instead of having to keep your foot on the accelerator all the time, using cruise control allows you to remove your foot from the pedal and just steer. Of course, this assumes you’re a driver who does drive more efficiently than cruise control. If you’re one of those drivers with heavy feet who are constantly hard on the gas and the brakes, your cruise control might not be any less efficient than your driving. With this added safety feature – drivers can rest assured their vehicles will maintain an appropriate distance from other cars and brake when necessary to avoid collisions.

By eliminating unnecessary acceleration and deceleration, cruise control ensures that your engine operates at a consistent level of efficiency. This can lead to significant savings at the gas pump, especially during long highway drives. Cruise control is designed to help people traveling long distances drive comfortably, but it can also help save gas money. With adaptive cruise control, sensors make sure your car maintains a safe distance behind a car. Before delving into the fuel-saving aspect of cruise control, it’s important to understand how the system works.
Knowing when and how to use cruise control is crucial for achieving optimal fuel economy. Therefore, it’s essential to familiarize ourselves with our vehicle’s specific cruise control functions for the best results. Driving downhill can make your car speed up naturally, as the law of gravity will cause your car to accelerate naturally. Cruise control will try to maintain the speed and cause it to use the brakes more than necessary. So, it would be best to drive your car and use the brakes manually for effective driving down the hill.
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Also, you should not use cruise control if you feel drowsy or are driving in stop-and-go traffic areas, such as roundabouts or at traffic lights. Using cruise control in an inappropriate environment and conditions might lead to accidents, overheating, and damage to components of your car. You then add a trailer and a lot of their work on aerodynamics goes out the window. Aftermarket cruise control kits typically include detailed installation instructions, and/or provide a direct phone number to the company’s technical support team. This eliminates much of the guesswork surrounding the installation of such systems.
No, the cruise control feature typically does not significantly impact the vehicle’s battery. It primarily relies on the engine’s power, and its electrical consumption is minimal. However, using other electrical features, like air conditioning, while cruise control is engaged may marginally contribute to battery usage.
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