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Rivian patent hints at real-time brake wear monitoring system using driver profiles

Image: Rivian

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Rivian’s attention to detail on its all-electric vehicles is laudable, and a recent patent application by the outdoor adventure company for monitoring brake wear continues that theme. In an application titled “Methods, Systems, and Media for Non-Contact Brake Pad Wear Determination”, a method of estimating the wear on individual breaks via computer algorithms is described. Once calculated, the information is then made available to drivers for planning purposes via the infotainment screen on the R1T pickup truck and R1S SUV. The application published on August 1, 2019 under US Patent Publication No. 2019/0234475.

The background of Rivian’s application stated the following reasons why the invention is needed:

“Current approaches for determining brake pad wear…tend to merely indicate when brake pads are fully worn, for example, using a brake pad indicator that causes the brakes to squeal when the indicator contacts the brake disc or that causes an indication on a dashboard of the vehicle to be presented. It may be useful for a driver to know a current wear condition of the brake pads before the brake pads are fully worn, for example, to plan for vehicle maintenance. However, it can be difficult to determine a current wear of the brake pads.”

While not an official reason listed on the patent, one could also assume brake squealing as an annoying sound in itself would also merit the invention’s usefulness as a reliable preventative.

Overall, Rivian’s application calculates the amount of wear on its vehicles’ brakes by comparing data points gathered from two braking events. The amount of pressure applied plus the distance traveled at two different intervals is collected, then compared to a brake database, and an estimate of the mileage left before a change is needed is provided to the driver. The calculation can also include the driver’s braking history to more accurately reflect the mileage. In other words, if you’re a bit rough on the brake pedal, Rivian’s software will take that into account and probably shorten the mileage you have left before needing replacement parts compared to someone that drives…differently. Here’s the formal language for this ability:

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“In some embodiments, the method further comprises associating a braking profile with an operator of the vehicle, wherein the indication of the wear amount of the brake pad includes a number of miles until the brake pad requires replacement that is estimated based on the associated braking profile.”

The method described in the claims of the application that calculate the wear on the brakes indicates a process initiated by the driver, i.e., the driver initiates a brake wear test on the center touchscreen and uses the brakes at two intervals as instructed by the vehicle’s computer to determine the wear percentage. However, the description of the application indicates that the brake testing can also happen in real-time during normal operation. The formal language for this reads as follows:

“…In some embodiments, [the testing] process…can receive a group of brake caliper measurements and corresponding brake pedal travel distances…during application of the brake pedal during normal operation of the vehicle…Additionally, in some such embodiments, [the testing] process can present indications of brake pad wear at any suitable time, such as a next time the vehicle is turned on, and/or at any other suitable time.”

This application is yet the latest nod towards Rivian’s development of a comfortable and luxury driving experience for its vehicle owners. The car maker’s branding as an outdoor electric adventure company really seems to have embraced its mission to get people outside exploring more by making the experience as convenient as possible. Whether it’s ample storage capacity, swapping out cargo modules, extending battery range with a digital jerry can, a portable kitchen built specifically for the R1T pickup truck, or now, being able to easily plan ahead for basic vehicle maintenance by checking a screen, Rivian is continuing its march against barriers to enjoying nature anywhere.

There’s a new phrase that seems to be developing based off of an old one about willpower: “Where there’s a Rivian, there’s a way.”

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Accidental computer geek, fascinated by most history and the multiplanetary future on its way. Quite keen on the democratization of space. | It's pronounced day-sha, but I answer to almost any variation thereof.

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Elon Musk

Tesla Model 3 wins ‘most economical EV to own’ title in new study

The Tesla Model 3 has captured another crown in a recent study showing the most cost-effective EVs

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tesla model 3 driving on a wet road
(Credit: Tesla)

The Tesla Model 3 recently captured the title of “most economical electric vehicle to own” in a new study performed by research firm Zutobi.

Perhaps one of the biggest and most popular reasons people are switching to EVs is the cost savings. Combining home charging, lower maintenance costs, and tax credits has all enabled consumers to consider EVs as a way to save money on their daily drivers. However, there are some EVs that are more efficient and cost-effective than others.

Tesla police fleet saves nearly half a million in upkeep and repair costs

Zutobi‘s new study shows that EV cost-effectiveness comes at different levels. For example, some cars are simply better than others on a cost-per-mile basis. The study used a simple process to determine which EVs are more cost-effective than others by showing how much it would cost to drive 100 miles.

National averages for energy rates have been used to calculate the cost as they widely vary from state to state.

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The Rear-Wheel Drive Tesla Model 3 was listed as the most economical vehicle in the study:

“The standard Tesla Model 3 is the most economical electric vehicle to drive in 2025. With a usable battery capacity of 57.5 kWh and a real-world range of 260 miles, it costs just $3.60 to drive 100 miles. That translates to an impressive 2,781 miles per $100 of electricity—making it the most efficient choice for EV owners nationwide.”

It had an estimated cost of just $3.60 to drive 100 miles.

The Tesla Model 3 Long Range All-Wheel Drive was second, the study showed:

“Next is the Long Range version of the Model 3, which offers extended range and dual-motor all-wheel drive. With a larger 75 kWh battery and 325 miles of range, the cost to drive 100 miles is slightly higher at $3.75, still equating to a strong 2,665 miles per $100.”

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This version of the Model 3 had a price of just $3.75 to drive 100 miles.

In third, the BMW i4 eDrive35 surprised us with a cost of just $4.12 to drive 100 miles:

“Rounding out the top three is the BMW i4 eDrive35, with a 67.1 kWh battery and a real-world range of 265 miles. Drivers can expect to pay $4.12 per 100 miles, which still allows for 2,429 miles per $100—a solid choice for those seeking luxury and efficiency.”

Several other Teslas made the list as well. The Model 3 Performance ($4.34 per 100 miles) was sixth and tied with the Volkswagen ID.3 Pure, the Tesla Model S Long Range ($4.35 per 100 miles) was 8th, and the Tesla Model Y Long Range was ninth ($4.36 per 100 miles).

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Tesla offers new discounts on Cybertruck inventory

Tesla is knocking up to $10,550 off of Cybertruck units in inventory

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Credit: Tesla

Tesla is offering new discounts on Cybertruck units in inventory, giving customers a chance to snag a unit of the all-electric pickup for a slight reduction in price. Some are even coming with additional perks to make the offer even sweeter.

Tesla is now offering up to $10,550 off of Cybertruck inventory units across the United States. This is up from previous discounts of $6,000 on inventory Cybertrucks, and it will apply to 2024 model year vehicles.

Non-Foundation Series Cybertrucks are getting up to $10,550 off of their original prices, while Foundation Series pickups are getting up to $10,000 off. These are great deals and should help clear out some inventory from last year’s models.

Additionally, Foundation Series Cybertrucks purchased will receive free lifetime Supercharging, another great addition to make the deal even better than the $10,000 off.

The move comes as Tesla is still ramping Cybertruck production and is hoping to stimulate some additional demand for the vehicle, as it is holding on to these units. These are not Demo Drive units that have been driven by any number of people who were looking for a quick test drive.

Tesla launched a new configuration of the Cybertruck just last week with the Long Range Rear-Wheel-Drive, which undercuts the All-Wheel-Drive option by roughly $10,000.

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Tesla released the Cybertruck RWD to make the AWD look like a deal

However, Tesla stripped the vehicle of several features, including Air Suspension, a tonneau cover, and interior features. For example, the Rear-Wheel-Drive trim of the Cybertruck has textile seats and no rear touchscreen, two things that come standard in the other trim levels.

The Cybertruck is the best-selling electric pickup in the United States, outperforming formidable competitors like the Ford F-150 Lightning and Chevrolet Silverado EV. However, Tesla is still working to get the vehicle to a lower price point that makes it more accessible to consumers, as its current pricing is a far cry from what was intended.

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Rivian grapples with challenges from Trump’s auto tariffs

Rivian CEO warns Trump’s auto tariffs will squeeze the EV industry. Scaringe says auto tariffs threaten rising costs & slower production.

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(Credit: Rivian)

Rivian is grappling with challenges arising from President Trump’s auto tariff. Rivian CEO RJ Scaringe recently enumerated the difficulties automakers face and elaborated on the impact of Trump’s auto tariffs on the electric vehicle (EV) industry.  

President Trump’s auto tariffs were announced last month, imposing 25% tariffs on imported vehicles effective April 3, 2025, and levies on auto parts starting in May.

Scaringe talked a bit about the complexity of the automotive supply chain with Fox Business. Rivian’s R1T pickup, R1S SUV, and commercial electric van are manufactured at its Normal, Illinois plant. Scaringe boasted that Rivian has a “very U.S.-centric supply chain.

Yet, the complex global supply chain poses hurdles for U.S. automakers who want to comply with Trump’s auto tariffs.

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“One of the things with automotive is the supply chain is so complex, where we have hundreds of suppliers providing parts from, say, a headlight or a tow hook or tires or the structure under the skin here that are coming from not only a set of suppliers that supply to us, but those suppliers have suppliers, and then in turn, those suppliers have suppliers, so there’s tier two, tier three,” Scaringe explained.

China’s restrictions on rare-earth material exports–in response to Trump’s 145% tariff on Chinese imports–further complicate matters. Rare-earth materials are critical for EV motor magnets and batteries. Nearly all rare-earth materials are processed exclusively in China.

“The trade restrictions and what we’re seeing in terms of rare earth metals out of China, that’s a real challenge for electric vehicles,” Scaringe noted.

Batteries comprise up to 40% of an EV’s cost. Goldman Sachs noted that battery costs have been falling in recent years. The investment bank estimated EV battery costs would drop by 50% between 2023 and 2026. However, China’s decision to restrict rare-earth materials may increase battery costs.

Wedbush analyst Dan Ives called the tariffs a source of “pure chaos” for the auto industry, stating, “A U.S. car made entirely with U.S. parts is a fictional tale.”

Ives warned automakers could increase car prices between $5,000 to $10,000. Wedbush predicts a potential change in Trump’s auto parts tariffs could ease disruptions.

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For Rivian, starting prices near $70,000 limit room for cost increases without impacting sales. As trade tensions escalate, Rivian faces rising costs and potential production slowdowns, threatening its growth in a shifting EV landscape.

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