Tesla’s New Deceleration Option: Regen Now Applies When Brake Pedal is Pressed

March 4, 2025

By Karan Singh

Not a Tesla App

The refreshed Model Y brought with it lots of changes to the exterior and interior - but there’s more to it than just that. Tesla is doing something completely different than its other vehicles with the new Model Y and that’s how regenerative braking works.

The new Model Y has an updated Dynamics Control menu that has a new deceleration option. At quick glance this appears to be a renamed regenerative braking label, but it’s much more than that.

Tesla has also added two additional options in the Traction Control Mode that aren’t available in the previous-gen Model Y.

Let’s dig into what each of these features does, as we believe many people will be pleased with the way regenerative braking now works in the new Model Y.

Deceleration - Not Just Low Regen

Just below the Acceleration category, where you’ll find the familiar Chill and Standard Modes, Tesla has introduced a new Deceleration category for the new Model Y.

This category offers two options: Standard (the default setting) and Reduced. The Reduced setting adjusts how quickly the vehicle slows down when you release the accelerator pedal.

However, this isn’t just another name for regenerative braking. Tesla has changed how they apply regenerative braking in the new Model Y.

Two Levels of Regen

Tesla previously offered two levels of regenerative braking, Normal or Low, which determined how much regen would be applied when you lifted your foot off the accelerator. Some new EV drivers struggled with the normal regenerative braking mode due to the amount of deceleration, but ultimately, Tesla removed the low regen option because it negatively impacted range and increased wear on the vehicle’s brakes unnecessarily.

Unlike other EVs, Tesla has only applied regenerative braking when the accelerator is released, and tapping the brake pedal would always activate the physical brakes. That is, until now.

Apply Regen With the Brake Pedal

With the new Model Y, Tesla has made changes that allow regenerative braking to activate either when the accelerator pedal is released or when the brake pedal is pressed. That means that sometimes the vehicle’s physical brakes won’t activate when you tap the brake pedal — instead, the vehicle may use regenerative braking.

Drivers now have the option to choose between normal or reduced deceleration when lifting off the accelerator pedal, which essentially means high or low levels of regenerative braking are being applied. However, now, when the brake pedal is tapped, the vehicle decides whether to continue using regenerative braking or use the vehicle’s physical brakes, depending on how hard the pedal is pressed.

This change removes the efficiency loss associated with low-level regenerative braking in older models because regen can again be applied when the driver uses the vehicle’s brake pedal. It’s really the best of both worlds. Drivers can now have the vehicle apply low levels of regen when the accelerator is lifted and still benefit from full regen because it is enabled again when the brake pedal is used.

We still recommend drivers get used to normal regen using just the accelerator pedal since it introduces the ability to mostly drive with just one pedal, but there is a learning curve.

Unfortunately, this new feature is exclusive to the latest Model Y, as it required changes to the vehicle, so we won’t see this feature coming in a future update. The Model Y is the first Tesla to apply regenerative braking when the brake pedal is used, but given how much it eases the transition to EVs, we expect it to roll out in future models as well.

Brake system in New Model Y has the freedom to use either electric motor or mechanical brake when you push the brake pedal

This brings you maximum efficiency, consistency in pedal behavior & improved stability pic.twitter.com/rIwOUxwpXU
— Tesla (@Tesla) March 3, 2025

Traction Control

Tesla has also made some changes to the new Model Y’s traction control. The Model Y used to have the option to enable Off-Road Assist and Slip Start. However, they’re adding two new options, Auto and Slippery Surface modes.

Slippery Surface

The new Slippery Surface mode debuted with the Cybertruck. It’s designed to improve the vehicle's handling on roads or surfaces that are slick with water, ice, or other snow, which can reduce traction. In this mode, your vehicle will closely monitor each wheel sensor for slippage and automatically apply additional torque where needed—essentially, very fancy torque vectoring to maintain control.

It is a more active approach to how Tesla normally handles active traction control - and it does consume additional energy to keep this active. On the Cybertruck, I’ve personally noticed about 10% additional energy usage when Slippery Surfaces is active, but the truck does handle far better. We’d expect a similar exchange with the Model Y, where you trade a bit of efficiency for better and more precise handling when Slippery Surface is activated.

Off-Road Assist

Off-Road Assist meanwhile, keeps the same overall package from the previous-Gen Model Y. This allows wheels to spin and also balances torque between the front and rear motors, which helps to optimize traction. It’s quite effective in rough and soft surfaces where one side of the vehicle may lose traction, while the other still has it.

Off-Road Assist also provides more gradual torque control, which can help when trying to crawl the vehicle over rocky surfaces. As usual, Off-Road Assist will disable automatically at higher speeds and also disables Automatic Emergency Braking and Lane Departure Avoidance, and Autopilot and FSD are disabled while it is active.

Where is Slip Start?

The Slip Start option was available on all variants of the Model Y, which helps to dislodge it if you manage to get it stuck in mud, snow, or ice - enabling the wheels to spin. It seems likely that Slip Start is probably further down in the menu - rather than being removed completely.

These changes to the new Model Y should please a ton of drivers, especially if they’re new to Tesla.

NHTSA to Streamline Approvals for Control-Free Vehicles Like Tesla’s Cybercab

June 16, 2025

By Karan Singh

Not a Tesla App

In a letter to industry, the National Highway Traffic Safety Administration (NHTSA) has announced that it is overhauling its approvals process for vehicles designed without human controls.

The change addresses a regulatory bottleneck that has slowed down American companies like Tesla from deploying purpose-built Robotaxis, rather than relying on using traditional vehicles with steering wheels and pedals. The policy shift is outlined in a letter posted to the NHTSA’s website, which you can find here.

Reducing Approvals From Years to Months

Under the existing rules today, any vehicle that is built without a steering wheel or brake pedals must receive a special exemption from federal safety standards.

Obtaining exemptions for a particular vehicle was a time-consuming process for both the companies requesting exemptions and the NHTSA. The process was often a black box—nobody knew when an exemption might be granted, and approvals could take years.

The NHTSA, under the new administration’s guidelines for autonomous vehicle development, is now committed to streamlining this process. The agency will be implementing a new, faster approach immediately for receiving exemptions for autonomous vehicles without standard controls. The NHTSA expects decisions on exemption requests to be determined within months rather than years.

Accelerating the Cybercab

This change has massive implications for Tesla, which is banking on the production of the simplified and easy-to-maintain purpose-built Cybercab. The Cybercab is developed from the ground up as an autonomous Robotaxi and will be one of the key beneficiaries of this move by the NHTSA.

Knowing that a final design won't be caught in a multi-year regulatory limbo provides a level of certainty that has been missing. It allows Tesla to confidently plan the manufacturing, development, and deployment processes without worrying whether the project will get stuck in regulatory approvals.

According to the letter, the agency will publish its improved instructions for the streamlined process "shortly." With Tesla already having begun Cybercab pre-production and the goals for its deployment as soon as late 2026, there’s still a lot to be done to make autonomy a part of Tesla’s new sustainable abundance mission statement.

You Can Now Track Tesla’s Robotaxi Deployment

June 15, 2025

By Karan Singh

Not a Tesla App

Thanks to Tesla Yoda on X, we have found out that Tesla’s Robotaxi fleet is registered on the Texas Department of Transportation’s public-facing Automated Vehicle Deployment website. This makes the fleet’s movements publicly viewable and trackable, and marks a first for Tesla.

This isn’t just any old FSD test - this is the first officially acknowledged, government-tracked, and sanctioned deployment of a Tesla Model Y operating as a ride-share vehicle. But that’s not all - Texas DOT’s tracker notes that the Tesla does not have a safety driver.

View on the Map

Visitors to the Texas DOT website can filter for “Tesla”, and see, currently, a single active vehicle operating in the Austin Metro area. According to the state’s official data, here’s what we know:

Company: Tesla

Description: Ride-share service

Status in Texas: Testing

Safety Driver: No

The final point is definitely the most interesting here. While Tesla has been testing FSD with safety drivers for some time in Austin and LA for employee-only testing, this is the first time that a vehicle has been officially registered and deployed on public roads without a human behind the wheel for safety.

The fact that there is no safety driver officially shifts the liability from the occupant of the driver’s seat to Tesla, for the first time in a public setting. That’s already pretty significant - we previously dove into how Tesla plans to insure its own vehicles, and potentially owner vehicles in the Robotaxi fleets.

The status currently lists Tesla as “Testing,” confirming that the service isn’t available to the public, but this is expected to change in the coming weeks.

This testing phase is likely part of a short but crucial period that lets Tesla capture data on the safety levels of its current iteration of Unsupervised FSD without a driver supervising. Tesla already stated that they’d be avoiding difficult areas, so this testing can also expose additional areas Tesla may want to avoid, such as school zones or blind driveways.

Tesla will need to prove, both internally and externally, that FSD Unsupervised has the necessary performance to safely navigate the streets without any incidents.

Regulatory Milestone

For years, the concept of a Tesla Robotaxi has been a future promise. Now, it's a present-day reality, albeit in a testing capacity.

Having an official government body list a Tesla as an active, driverless vehicle shows that they’ve been able to clear regulatory hurdles, which Tesla has often pointed to as the issue. It demonstrates a level of confidence from both Tesla and Texas regulators in the system's capabilities.

While it's just a single vehicle for today, we’ll likely see this list slowly expand over time. Alongside being able to track Robotaxi incidents at the City of Austin’s website, we’ll be able to closely watch Tesla’s progress with its first Robotaxi deployments.