Braking is essential to the driving experience, but not all systems are created equal. A regenerative braking system (RBS) is the most significant difference people notice the first time they operate an electric vehicle.
Regen, as commonly referred to, makes it possible to drive a Tesla and never touch the brake pedal (along with some brake blending for slow speeds), not only reducing wear and tear on braking components but putting energy back into the battery. There are some estimates that regenerative braking can add 10 percent more range and extend the life of braking mechanisms by more than 50 percent.
What is Tesla's Regenerative Braking?
Unlike traditional brakes, which rely on friction to stop the wheels from turning, regenerative braking uses the vehicle's electric motor to create resistance to slow down the vehicle. In addition to slowing the vehicle down without the use of brakes, the motor running in reverse acts as a generator and captures the kinetic energy that would typically be lost as heat and converts it into electrical energy, thereby increasing your vehicle's range.
How to Activate Regen in a Tesla
In a Tesla, the regenerative braking system is activated by lifting your foot off the accelerator. The more you ease off the accelerator, the stronger the braking force and the more energy is captured.
Tesla's Power Meter (Regen bar)
Tesla's power meter, also known as the regen bar or line
Not a Tesla App
All Teslas feature a power meter either in the instrument cluster (Model S and X) or the center screen (Model 3 and Y) that displays the amount of energy being captured through regenerative braking, or the amount of energy being used by accelerating the vehicle.
The center of the line is considered neutral. Anything to the left of the center point means energy is being captured, while anything to the right means that energy is being used.
The further the line grows to the left, the greater the amount of regenerative braking is taking place, and the more it moves to the right, the greater the amount of power is being used.
The regenerative braking line is green, while the power line is black (or white when in dark mode). You may occasionally also see a gray line on the left side. This will appear if the vehicle has the 'Apply Brakes When Regenerative Braking Is Limited' feature turned on. This feature introduces a consistent braking experience when lifting your foot off the accelerator pedal when regenerative braking is limited.
You may also see the gray line appear on the left side of the power meter if the vehicle is in Autopilot. This helps the driver understand when the vehicle is using regenerative braking or physical brakes to slow down.
Without getting too deep into Physics, kinetic energy is energy in motion. Therefore, anytime a car slows down, the kinetic energy that is produced has to go somewhere. With traditional brakes, that is heat from abrasion generated from the brake pads squeezing the rotors. But this energy can be used in a different way. In the words of a Tesla engineer, "kinetic energy stored in a moving vehicle is related to the mass and speed of the vehicle by the equation E = ½mv²."
You can see this equation play out every time you drive your Tesla by looking at the vehicle's power meter.
The motor controller manages the torque of the motor. This action helps with both driving and regenerative braking. The position of the accelerator pedal tells the motor controller how much torque is needed. The motor controller then changes this into a voltage or current that produces the correct torque. The rotating force can be positive or negative. When it is negative, it means the vehicle is slowing down, and energy is returned to the battery.
Regenerative Braking Explained
Regenerative Braking Extends the Life of Your Brakes
One of the benefits of regenerative braking is that it can help to lengthen the life of your brakes. Regenerative braking slows the car reducing the work of your traditional braking system. In fact, Tesla estimates that their cars experience 50 percent less brake wear than conventional gasoline cars. Elon Musk predicted that Tesla's Semi would have brake pads that would "literally last forever" because the regenerative system would save those pieces from being used extensively.
It's estimated that regenerative braking captures up to 70 percent of the kinetic energy usually lost during braking and is put back into the battery. As described above, that energy can then extend the range between needing to charge.
Does Regenerative Braking Activate Your Brake Lights?
During regenerative braking, Tesla will still activate the brake lights when the vehicle is slowing down, even if the brakes aren't being used at all. Tesla determines whether to turn on your brake lights based on your vehicle's rate of deceleration. If you're unsure if your brake lights are on, look at your Tesla screen, the car in the display shows the brake lights lit up when the brake lights are activated.
Levels of Regenerative Braking
It's important to note that regenerative braking cannot be turned off. There are two regenerative braking modes for 2020 and older models — low and standard. Tesla recommends that you use standard to maximize your vehicle's range. At some point in 2020, that choice was taken away, presumably to use all the benefits of regenerative braking all the time. However, there were some concerns, as regenerative braking can slow down the car rapidly; therefore limiting traction, the vehicle could slide. Tesla has this warning on its website: In snowy or icy conditions, Model S may experience loss of traction during regenerative braking.
Tire Configuration
The company also notes that installing winter tires may temporarily reduce regen. But the vehicle's systems are constantly recalibrating, so the feel of the vehicle will return to what the driver is used to after a few miles or trips.
You can speed up the calibration process by selecting the type of tires your vehicle is using. To select the type of tires your vehicle is using navigate to Controls > Service > Wheel & Tire Configuration > Tires and choose the appropriate tire type.
Regenerative Braking Limited or Reduced
Regenerative braking is not available or can be limited during certain conditions. If this happens, you may see a dotted line in the vehicle's power meter. If the battery is fully charged, there is nowhere for the kinetic energy to go. Consequently, regen won't work. It also has limited usage during cold weather due to a cold battery. In these cases, you can choose to activate 'Apply Brakes When Regenerative Braking Is Limited' to provide a consistent slow down experience. Tesla stated, "Your car can now automatically apply regular brakes for consistent deceleration when regenerative braking is limited due to battery temperature or state of charge." But the company did leave this as a preference, and the option can be turned off. You can activate it under Controls > Pedals & Steering.
Stopping Modes
Regenerative braking works best at certain speeds, if you're traveling too slow, regenerative braking may be limited or not available at all.
In a Tesla, your vehicle will use regenerative braking whenever you lift your foot off the accelerator pedal. However, if you're using Tesla's 'Hold' stopping mode, which allows you to drive with a single pedal most of the time, the vehicle will automatically blend in the vehicle's brakes when traveling 4 MPH (6.5 KPH) or slower.
If you're using Tesla's 'Creep' or 'Roll' stopping modes, the vehicle will never apply the brakes when lifting your foot off the accelerate, which means the vehicle will continue to roll at slow speeds when regenerative braking is no longer effect.
A Brief History of Regenerative Braking
Tesla used regenerative braking in its first car — The Roadster, in 2008. A year later, the same mechanics of the system were implemented in Formula 1. It is called KERS, which stands for Kinetic Energy Recovery System. It provides such a horsepower boost that it was banned for a season before being regulated the following year. However, this advanced system dates back to the late 1800s.
The Sprague Electric Railway and Motor Company is the earliest known use of the technology in 1886. General Electric used regen in 1936 in its locomotives, and Oerlikon, a Swiss company utilized some components of the system in its gyrobus. The Amitron, a concept electric car created by the American Motor Car Company included regenerative braking in its designs. Toyota introduced the technology to its brand with the Prius Hybrid in 1997 and GM's EV1 had regen when the company sent the cars to the crusher.
Regenerative braking is now a staple of the electric vehicle experience, not only reducing maintenance costs but also improving the vehicle's range and letting drivers accelerate and slow down with a single pedal.
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We’re eagerly anticipating Tesla’s biggest update of the year — the Holiday update. The update usually arrives in December, typically towards the end of the month. Last year, the rollout was actually earlier, happening in the second week of December.
As part of our ongoing series, we’re sharing our wishlist for features we hope to see in this year’s holiday update. This edition focuses on improvements to Tesla Maps and Autopilot.
User-contributed Map Data
Many users have asked for the integration of more Waze-like features into Tesla’s navigation. Earlier this year, Tesla added Speed Camera locations, traffic lights and stop signs to maps, but users really want it to be a Waze-like experience that lets you contribute data. This includes marking police car locations, accidents, construction, and more. We’re not sure how likely this is to happen. So far, Tesla has relied on the Google API and other vendors to highlight information on the map.
Avoid Highways Option
Users have been asking for an ‘Avoid Highways’ option forever, as it’s a standard option in navigation systems nowadays. While the Alternate Routes feature is helpful, it may not always provide a route that avoids the highway.
In June, Elon Musk confirmed that a “Avoid Highways” option would be added to Tesla navigation. We still haven’t seen it arrive, but we’re fairly confident that it will eventually be available in Tesla vehicles, maybe even for the Holiday update. What better way to enjoy a winter wonderland than to drive through some country roads instead of on the highway?
3D Buildings in Maps
Not a Tesla App
3D maps arrived in China earlier this year, and Google began rolling out 3D maps for various apps just last month. Apple already provides a 3D map with beautiful renderings of nearby buildings, and Rivian already features 3D buildings with an Apple-like look, so Tesla is playing catch-up a little bit here.
While 3D map support could be viewed as mostly eye candy, it can sometimes be useful when navigating an unknown area. Since the Intel infotainment processor is already near its limit and has excluded features in the past, such as improved visualizations and High Fidelity Park Assist, this feature could be limited to newer AMD-powered vehicles.
At Tesla’s recent Robotaxi event, we saw custom 3D maps in the vehicle with a specialized interface, so Tesla knows this is an appealing addition.
Full Screen Visualizations on Intel
BLKMDL3
This year Tesla added support for full screen Autopilot visualizations on AMD-based vehicles. Unfortunately the option to go full screen isn’t available on Intel vehicles, unless you’re in North America and have FSD.
There isn’t a clear reason why this is the case, since Intel vehicles can obviously handle them. It’d be nice if this holiday season Tesla expanded full-screen visualizations to all Intel vehicles, regardless of location.
Detect and Visualize Emergency Vehicles
Greentheonly/X
Tesla already detects emergency vehicles while on Autopilot, however, it doesn’t display them in the visualization any differently than a normal car. Tesla was planning on adding emergency vehicle visualizations as far back as 2021, but they didn’t happen for some reason.
Tesla recently announced that they’re going to step up emergency vehicle detection by not only detecting the vehicles visually but also using audio input as a cue. With FSD v13, which is expected to be released to Tesla employees this month, FSD will detect emergency vehicles using the vehicle’s internal microphone. This should let the vehicle know about emergency vehicles sooner. We’re hoping that on-screen visualization comes along with this update.
If it’s anything like Tesla’s 2021 implementation, Tesla will design emergency lights that could be added to various existing 3D models, such as cars, SUVs, and motorcycles.
FSD Visualizations in Other Regions
This one is long overdue, and we hope it finally arrives. Owners outside of North America have been paying for FSD for years and have almost nothing to show for it. Sure, it includes some features like Summon (with USS vehicles) and, more recently, Autopark, but it doesn’t even include Actually Smart Summon yet.
While Tesla says the FSD is coming to Europe and China in Q1/Q2 next year, it’d be a great addition to add FSD visualizations for the time being.
There’s no doubt that Tesla is already detecting objects and vehicles behind the scenes and comparing what the vehicle would do to what the driver does to help improve Autopilot in these markets. For some reason, Tesla has decided to show different visualizations depending on whether you have Autopilot or FSD and whether you live in North America or elsewhere.
Adding FSD visualizations for everyone, regardless of whether they have Basic Autopilot, EAP, or FSD, would be an exciting addition — and it may even increase the subscription rate to FSD.
Expand Basic Autopilot
Tesla’s Basic Autopilot includes Adaptive Cruise Control and Autosteer, but we’d love for Tesla to expand this further to match what other manufacturers are offering.
Right now, Tesla considers Navigate on Autopilot and automatic lane changes part of Enhanced Autopilot. This means that if you’re on Autopilot and want to change lanes, you need to disable AP, change lanes, and re-enable it. Since many regions no longer offer Enhanced Autopilot for purchase, users are forced to put up with this annoyance or pay for FSD, which isn’t offered as a subscription outside of North America.
By creating a clearer distinction between Autopilot (focused on highway driving) and FSD (designed for city driving), Tesla could improve the Autopilot experience for users while encouraging them to upgrade to FSD.
Actually Smart Summon
Actually Smart Summon is still mostly limited to North America, with some small regions such as Taiwan, also receiving it. However, it still requires you to hold the ‘come’ button currently. The next big leap would be to remove this requirement and enable users to summon their vehicles with a single tap. Tesla previously said this was coming in a future improvement to A.S.S.
Ideally, we’d see the reach of Actually Smart Summon expanded to Europe and other regions and improvements of the feature, although we’re much more likely to see the former for the Christmas update.
Cybertruck is also still waiting for Summon, so this could be an additional surprise.
Autoshift for All Cars
While Autoshift isn’t directly tied to Autopilot, it does leverage AI to decide whether to shift into reverse or drive. This feature has now been released on the new Model S, Model X, the new Model 3, and the Cybertruck. However, Musk once said that it would be added to all Tesla vehicles, so we’re hoping that’s still in the works.
There’s certainly no reason why Tesla can’t add it to older vehicles with stalks. For those not familiar with Autoshift, it allows the vehicle to automatically shift into reverse or drive when the driver is ready to start moving. This makes it even easier to get going: You simply get in the car, press the brake pedal, giving the vehicle a chance to shift, and then press the accelerator.
This is our second wishlist of features we’d love to see in Tesla vehicles this holiday season. If you haven’t seen our first wishlist, the Tesla App Edition, be sure to check it out.
While this is a list of the most popular user requests related to Tesla’s navigation and Autopilot features, we’re sure that there are some we missed. Let us know your thoughts and ideas in our forums.
There’s been a spade of Cybertruck announcements that just came up all at once, so let’s see what the polygonal truck is up to in the month of November. We’ve got a variety of topics to cover, starting with some disappointing news about Tesla’s in-house wrapping services, which are being discontinued for the Cybertruck. But don’t worry — there’s plenty of good news to follow.
No More Tesla Wraps
Tesla no longer offers wraps for the Cybertruck as an option for US customers. Tesla began wrapping vehicles earlier this year but stopped offering wraps for the Cybertruck as of November 13th.
This comes after Tesla previously reduced the color options for Cybertruck wraps from seven to five. However, this isn’t too big of an issue—there are plenty of companies that specialize in vehicle wraps.
The reason Tesla stopped offering wrap services for the Cybertruck isn’t clear. Was there not enough demand? Did it take up too much time from technicians who are already stretched thin?
Given the long repair backlogs in the United States, it makes more sense to have service technicians focus on vehicle repairs rather than spending time wrapping cars.
Inventory Foundation Series
The Cybertruck Foundation Series is now available as an inventory vehicle in certain locations in the United States. That means you can pick up a Foundation-series truck with little to no delay.
Only a few trucks are currently in stock, but this will likely expand as Tesla continues to ramp production and begins to offer the non-Foundation Series trucks as inventory vehicles.
These inventory vehicles are only available in the United States. Canadian owners will still need to put down a deposit for a Foundation Series Cybertruck to get it soon.
Crossbars
Tesla has just announced it is offering a new set of crossbars for the Cybertruck. With a load rating of 200 lbs, it’s on par with roof racks for other trucks. These crossbars also come with mounting pads and quick releases. There are also slots for attaching ski racks, bike racks, or even cargo boxes, letting owners expand the truck's storage capacity.
Interestingly, the Foundation Series trucks can install the crossbars over the cabin or the truck bed, while the non-Foundation Series can only mount the crossbars over the truck bed. That isn’t the greatest news - because one of the best uses for these crossbars is protecting the cabin glass when you’ve got items like long wooden planks hanging over the roof of the truck. Maybe we’ll see more on this soon.
The mounting points for the Cybertruck's crossbars.
Not a Tesla App
Update: It turns out that you can, in fact, install the crossbars anywhere on a non-Foundation series vehicle. You’ll just have to pay for an additional roof applique, according to Wes Morril, Lead Engineer of the Cybertruck Program.
Faster Charging
Tesla announced updated versions of the V4 Supercharger, with a more powerful electrical cabinet that can charge the Cybertruck at up to 500kW. That’s an insanely fast speed—nearly 1,300 mi/hr of charging. This will come as part of a future update for the Cybertruck and as V4 Supercharger stations begin to be deployed.
That’ll make the Cybertruck the fastest-charging Tesla - even with its enormous battery.
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