What is Regenerative Braking?

Regenerative braking is one of the most essential, yet often misunderstood and underappreciated, features of modern EVs, found on everything from commuter-grade hybrids to luxurious full-size electric trucks. This system significantly increases range and reduces brake wear by recovering energy that’d otherwise be lost.​

Though this system is extremely common on modern electric vehicles, many first-time EV drivers don’t understand the full scope of regenerative braking, including how it works, its purpose, and why they should learn to adapt to one-pedal driving.​

As the nation’s leading retailer and manufacturer of premier auto accessories, we know a thing or two about EV tech and brakes. In this guide, we’re breaking down everything you need to know about regenerative braking. Whether you're the proud owner of a new EV or a veteran EV driver who tends to turn off regenerative braking, read on to learn more about this ingenious (and functional) system.

Conventional internal combustion vehicles rely entirely on friction to slow and stop. Pressing the brake pedal generates the force required to clamp the brake pads onto the rotors, which converts kinetic energy to heat that dissipates into the air—that’s wasted energy. EV manufacturers found a way to repurpose this kinetic energy by using the vehicle's electric motor to stop it.​

Regenerative braking is a system used in hybrid and electric vehicles that captures this energy during deceleration and uses it to passively recharge the battery. Rather than using kinetic energy to slow down, as with a traditional braking system, regenerative braking doesn’t wear brake components and recovers some energy that’d otherwise be wasted. Especially in stop-and-go driving conditions, regenerative braking can significantly increase range.

The specifics of regenerative braking differ from manufacturer to manufacturer—but the core design remains the same. When accelerating or maintaining speed, the motor draws electricity from the battery. During regenerative braking, this process reverses, enabling the kinetic energy of the wheels to transfer through the motor(s) (which function as generators) into the battery.​

One side effect of this process is that resistance is created in the drivetrain, which essentially functions as a secondary braking system. Most EVs still feature conventional braking systems alongside regenerative braking, which are used when regenerative braking is turned off, or during hard stops/low speeds.​

How Efficient is Regenerative Braking?

Regenerative braking is relatively efficient, recovering 60 to 70 percent of energy that’d typically be lost during traditional braking. That said, real-world efficiency may vary depending on driving conditions, battery state, vehicle weight, and external conditions.​

In ideal conditions, such as stop-and-go driving in a warm climate, regenerative braking can significantly boost range by approximately 10 to 30 percent.

However, some drivers in Northern climates may find the system to be less-than-optimal, especially in freezing temperatures. Like an exhaust brake on a diesel, regenerative braking slows the momentum of the tires rapidly, which can lead to a loss of traction over icy conditions. For this reason, it’s recommended to turn regenerative braking off or down in winter. 

Regenerative braking is a feature exclusive to hybrid and electric vehicles, as it relies on electric motors to generate energy and battery packs to store what’s recovered.​

Common examples of vehicles featuring regenerative braking include:​

• Hybrid vehicles like the Toyota Prius

• Plug-in hybrids (PHEV) like the Jeep Wrangler 4Xe

• Fully-electric vehicles like the Tesla Cybertruck, Ford F-150 Lightning, and Rivian R1T

If you aren’t a huge fan of the sensation of regenerative braking, you’re in luck. Most applications let you tailor regenerative braking to your liking, whether that means scaling it up or down or turning it off completely.​

The level of control varies by manufacturer and model, but in general, regenerative braking can be adjusted via the infotainment screen (Tesla), steering wheel paddles (Hyundai/Kia), or dashboard switches (Jeep®).​

Vehicles like the Ford F-150 Lightning allow you to choose between multiple levels of regeneration, while others—like most Teslas—offer fewer customization options. While reducing regenerative braking can create a more familiar driving experience, it will also reduce efficiency.

Regenerative braking can take some time to get used to, but once you get the hang of it, it’s an excellent tool for extending range and brake life. Regenerative braking typically applies whenever your foot leaves the accelerator pedal. If you’re looking to coast, keep your foot lightly on the pedal. If you’re anticipating braking, let off the accelerator early and let the regenerative braking system do most of the work.​

Depending on driving conditions, you should alter the strength of your vehicle’s regenerative braking system. Full-strength is ideal for stop-and-go driving, as it better simulates friction braking. However, if you’re coasting at a high speed on the freeway, reducing regenerative braking strength can make coasting and maintaining speed easier.​ 

Next, let’s dive into one-pedal driving—a common feature of EVs and hybrids that essentially eliminates the need for friction braking.

One-pedal driving is exactly what it sounds like—a system allowing EV drivers to stop and go with a single pedal. When a driver presses the accelerator pedal, it functions normally. However, when the driver lifts their foot, the vehicle automatically slows—typically to a complete stop—using regenerative braking, without ever touching the brake pedal.​

One-pedal driving is common on EVs with aggressive regenerative braking.

One-pedal driving is a system that relies entirely on aggressive regenerative braking. If the system isn’t strong enough, it can’t bring the vehicle to a complete stop within an effective distance.​

On vehicles with aggressive regenerative braking systems, the electric motor immediately switches to generator mode when the pedal is released. On many vehicles, the system is calibrated to bring the vehicle to a complete stop without manually engaging the brake pedal. During one-pedal driving, most vehicles can automatically engage the friction brakes for extra stopping power in emergencies.

Q: Does regenerative braking use brake pads?

A: Yes, but they’re applied less frequently. Regenerative braking handles the majority of standard deceleration, while traditional friction brakes take over on hard stops, low-speed braking, or during emergency scenarios.

Q: Does regenerative braking charge the battery?

A: Yes, regenerative braking causes an EV’s electric motors to act as generators, which transform friction into energy that’s used to passively charge the battery system. 

Q: How to turn off regenerative braking in Tesla Model Y.

A: While the Tesla Model Y is one vehicle where regenerative braking can’t be fully turned off, drivers can adjust the behavior of the system. In the infotainment system, select the “Stopping Mode” setting and adjust between the available modes, including Hold, Roll, and Creep.​

Q: Does Tesla have one pedal driving?

A: Yes. All current-generation Tesla vehicles feature advanced one-pedal driving functionality and strong regenerative braking.​

Q: Who invented regenerative braking?

A: While the concept of regenerative braking dates back to early electric transportation systems, the technology wasn’t widely adopted in passenger vehicles until the release of the late-nineties Toyota Prius.​

Q: Is regenerative braking worth it?

A: Yes. If you aren’t yet used to your EV’s regenerative braking system, we recommend giving yourself some time to adjust before writing it off completely. This system can significantly increase range and reduce brake wear, saving you time and money at the charging station.