Engine braking might sound like something only car enthusiasts talk about, but it’s a key technique for driving efficiently. While it can help you slow down smoothly and save your brake pads, it’s not always a free pass in every area. Curious about what engine braking is and why some places have rules against it?  

Engine Braking in Motorcycles

Engine braking in motorcycles involves slowing the bike by closing the throttle while in gear. The process utilizes engine drag, caused by internal friction and reduced airflow, to decrease speed without brakes, enhancing control and stability.

Engine Braking in Cars

This occurs when drivers release the accelerator pedal, causing the engine to create a vacuum that slows the vehicle down. In this process, the engine uses its internal components to resist movement, which replaces conventional braking methods. 

Jack Braking

​Commonly used in large trucks, jack braking increases braking power by releasing compressed air from the engine cylinders.​ The method helps drivers slow down on steep hills, enhancing vehicle control and reducing wear on the traditional braking system.

Downshifting

Downshifting is the process of changing a vehicle’s transmission to a lower gear. This action increases engine resistance, helping to decelerate the car. It allows drivers to maintain better control, especially when driving downhill or during emergency stops.

Coasting

This is where a vehicle moves without using the accelerator or brakes. The vehicle naturally slows down due to friction and resistance, providing a smoother and more fuel-efficient driving experience. Coasting helps conserve energy during travel.

Difference of Engine Braking in Motorcycles and Cars

It is more effective in motorcycles than cars due to higher engine compression and lighter weight, which results in better control and quicker deceleration. Cars have bigger engines that reduce RPMs more slowly. Weight also impacts braking efficiency and stopping distance.

The Benefits of Engine Braking

Engine braking is a smart way to reduce wear on your vehicle’s brakes, extend the life of brake pads and discs, and reduce brake fade while cutting maintenance costs. It also improves fuel efficiency, especially in manual cars where fuel injection may briefly stop during deceleration.

Brake Fade

During heavy braking, brake fade occurs as a result of excessive heat buildup in the brake system. This heat prevents the brakes from functioning effectively and makes it harder to stop the vehicle. Notably, it can occur in regular driving or during high-speed conditions.

Potential Downsides of Engine Braking

While engine braking offers benefits, improper use can strain the transmission and clutch and cause significant wear over time. Moreover, it lacks the immediate response required for emergency deceleration. Drivers should use this skill wisely and balance it out.

Financial Implications of Engine Braking

​Using engine braking can significantly reduce wear and tear on brake pads, potentially saving drivers $100 to $200 over time on replacements.​ However, excessive engine braking may lead to increased maintenance costs for the engine and transmission, possibly costing $500 or more.

The Noise Factor and Engine Braking Restrictions

There are often restrictions on engine braking because of the loud noise generated by compression release systems, particularly in heavy trucks. Many towns and cities have enacted laws against it, prioritizing noise control over the mechanical benefits. 

Specific Areas of Prohibition

States such as Colorado and New Mexico have implemented specific restrictions, often in tourism-heavy locations, to preserve local tranquility. Drivers must be aware of these regulations to avoid violating local laws.

Balancing Safety and Efficiency

For safety, balancing engine braking with traditional brakes is important, but relying solely on engine braking in critical conditions like bad weather or emergencies can be risky. Drivers should use engine braking wisely as part of a comprehensive safety strategy.  

Conclusion: Embracing Safe Practices

Engine braking is important for controlling your vehicle and reducing brake wear. While it offers significant benefits, such as enhanced control, its effectiveness may be limited by noise regulations in urban areas.