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Tesla Model S vs. Toyota Mirai Comparison

Published

11 years ago

December 1, 2014

Teslarati

With the introduction of the new hydrogen-powered Toyota Mirai (the name means “future” in Japanese), there has been a lot of media hype about vehicles that use hydrogen fuel cells as their power source. Toyota, Honda and a number of other automobile companies have announced plans to build cars based on fuel cell technology.

Fundamentally, a hydrogen fuel cell produces electricity via an electro-chemical reaction that drives an electric motor that creates the motive force for a car. The technology requires high-pressure storage of liquid hydrogen, a fuel cell to convert the H2 to electrons, a control system to deliver the resultant electricity to an electric motor and/or battery that in turn drives the wheels of the vehicle. It’s a workable, if somewhat complex system that produces zero emissions and water as a by-product.

In the media, there are three major claims that are being made about cars powered by hydrogen: (1) that H2 is a 21st century energy source and will ultimately become the preferred power source for automobiles; (2) that hydrogen-powered fuel cells represent a significant improvement in environmentally safe automotive fuel, and (3) that cars like the Toyota Mirai represent a major threat to battery electric vehicles (BEVs) like the Tesla Model S.

Are any or all of these claims true? We thought we’d take a look.

After going through the popular literature and government/academic reports, we decided that the best way to present the array of information collected was with an infographic, “Tesla Model S vs. Toyota Mirai: A Technology/Vehicle Comparison,” that examines four broad categories of concern:

underlying technology that powers the vehicle
the two vehicles themselves
technology required for refueling the vehicle, and
environmental impact

Tesla Model S vs. Toyota Mirai

Technology

EV technology has been around for 100 years. It represents a remarkably simple method for automotive power that is constrained solely by the capacity of the vehicle’s batteries. Fuel cells are evolving rapidly and provide more energy capacity than modern Li-Ion batteries, but they require liquid hydrogen to be stored on board the vehicle in pressurized tanks. The Tesla Model S has an energy capacity of either 60 kWh or 85 kWh while the Toyota Mirai produces 114 kWh. The overall energy efficiency (from an environmental viewpoint) of BEVs is dependent on the efficiency of the electric grid from which a BEV obtains its diet of electrons. The efficiency of hydrogen-powered cars is impacted by the process that extracts hydrogen from other sources and the method by which hydrogen is transported to a refueling station.

The winner: It’s close, but the simplicity of the BEV system gives the underlying technology of the Model S a slight edge.

The Vehicles

Both the Tesla Model S and the Toyota Mirai are expensive, but that’s the price of new technology. The Model S is a premium, high performance automobile in ever sense of the word. It is a visually beautiful car that conjures images of a Aston Martin or Jaguar and has been lauded as one of the best sedans in the world. It has won praise from virtually every automotive media source, and is one of the safest, roomiest cars on the planet. The Toyota Mirai has an eccentric look that gives it a boxy Prius-like feel. It appears to provide good, basic transportation, but it is not for those who want a bit more than good, basic transportation. Finally, the Tesla Model S is here today. By 2017, there will be about 160,000 Model S vehicles on the road. Toyota projects that only 3,000 Mirais will be in the field by the same date.

The winner: No contest! The Model S is far superior to the Mirai in virtually every respect except for range.

Fueling the Vehicle

In our view, one of the major benefits of BEVs is that you refuel them at home, overnight, while you’re sleeping, so that your Model S is “full” every morning. Unless you travel long distances on a regular basis, you will rarely need a Tesla Supercharger or any other refueling source away from home. That’s huge, and often get’s lost in the discussion of “range anxiety” that always seems to invade the thinking of those who don’t own a Model S. Although fuel cells are sexy, it seems odd to us that Toyota has returned to a 20th century fueling station paradigm. In essence, there is little difference between refueling a Mirai and refueling a Camry. Sure, the fuel is different, but you have to hunt for a specific refueling station as your Mirai slowly depletes its hydrogen. No charging at home—ever.

The winner: No contest! Refueling your vehicle at home is a convenience that represents 21st century thinking. Model S provides that convenience. Mirai does not.

Environmental Impact

Both the Model S and the Mirai are environmentally impressive. Both have zero emissions and relatively low “well-to-wheel” inefficiencies. In our view, the beauty of a BEV is that it becomes increasingly friendly to the environment as our electric grid infrastructure improves. There is no need to separately transport fuel to a refueling station (a requirement for a hydrogen fuel cell vehicle) eliminating both the cost and the environmental impact of secondary fuel transport.

The winner: It’s a toss up. Both cars are environmentally friendly and both will improve as the grid becomes cleaner and as hydrogen extraction processes become more efficient and cost effective.

As a young engineering student I was taught that when you consider alternative systems that both achieve the same result, always choose the less complex approach. That’s common sense, but it appears that when faced with the same choice, Toyota chose the more complex option. Possibly, their engineers or marketing people were driven by concern about range, but that’s simply not as big an issue as they think it is. BEVs represent simplicity, and in an increasingly complex world, that’s something that many consumers like.

Is the Mirai (or another similar H2 vehicle) a “Tesla Killer”? Not a chance!

Originally published on EVannex

Elon Musk

xAI’s Grok 3 partners with Oracle Cloud for corporate AI innovation

Elon Musk’s xAI partners with Oracle to deliver Grok 3 to enterprise users via OCI. The move boosts Grok’s reach.

Published

3 hours ago

June 19, 2025

Maria Merano

Credit: Elon Musk | X

xAI’s Grok 3 is partnering with Oracle Cloud to deliver its advanced AI model to corporate customers.

Oracle announced its collaboration with xAI earlier this week. The partnership leverages Oracle’s robust infrastructure to offer xAI’s Grok 3, positioning it as a transformative tool for business applications.

“Today, we announced xAI has selected Oracle to offer xAI’s Grok models via OCI Generative AI service for a wide range of use cases and will use OCI’s leading AI infrastructure to train and run inferencing for its next-generation Grok models,” said Clay Magouyrk, Executive Vice President at Oracle Cloud Infrastructure, via LinkedIn.

Oracle’s cost-effective AI capabilities will support xAI’s demanding workloads, enabling faster processing for enterprise users.

Oracle’s Karan Batta told Reuters: “Our goal here is to make sure that we can provide a portfolio of models – we don’t have our own.” Oracle will host Grok 3 alongside models from Meta, Mistral, and Cohere, ensuring corporate data remains secure within existing Oracle protections.

Oracle’s strategy focuses on integrating popular AI models into corporate software, and xAI’s Grok 3 enhances this portfolio. The collaboration expands Grok’s reach to businesses seeking secure, high-performance AI solutions for diverse use cases.

Elon Musk’s xAI launched Grok 3 in February. It competes with models from DeepSeek and OpenAI. Grok 3 is free for all X users, but features are limited. X offers Premium and Premium+ subscribers access to Grok 3’s advanced capabilities like DeepResearch and Think modes. Users who are not paid subscribers have access to Grok 3’s basic features.

Elon Musk’s companies have a longstanding relationship with Oracle. In 2018, Tesla appointed Oracle founder Larry Ellison to its board, a move Wedbush analyst Daniel Ives called a “home run appointment.”

In 2023, Ellison–who is no longer on Tesla’s board but still close with Musk–revealed plans for a Tesla Cybertruck police car.

“Our next-generation police car is coming out very soon,” Ellison said at the 2023 Oracle CloudWorld conference in Las Vegas. “It’s my favorite police car. It’s my favorite car, actually. It’s Elon’s favorite car.”

Grok 3’s integration into Oracle Cloud strengthens xAI’s position in the corporate artificial intelligence market. By combining Oracle’s infrastructure with Grok’s cutting-edge capabilities, this collaboration could redefine enterprise AI adoption, driving innovation across industries.

Elon Musk

Tesla Robotaxis are becoming a common sight on Austin’s public roads

Tesla Robotaxi sightings are becoming much more frequent ahead of its launch planned for this month.

Published

14 hours ago

June 18, 2025

Joey Klender

Credit: @Muzeishen | X

Tesla Robotaxis are becoming a common sight on the public roads of Austin, Texas, as yet another test mule has been spotted near the company’s target launch date.

Just over a week ago, the first public sighting of a driverless Tesla Robotaxi was reported. The vehicle was an updated version of the Tesla Model Y, which will be the initial model used in the public deployment of the Robotaxi platform.

Throughout the past week, sightings have been more common, as people in Austin have been looking for the unique decal Tesla is placing on car doors to recognize the driverless vehicles (After all, Robotaxis are not as easy to recognize as driverless vehicles without the LIDAR unit on the roof like Waymo).

Yet another sighting of a Robotaxi was shared on social media today, just two days before CEO Elon Musk’s proposed launch date of June 22:

🚨 Tesla Robotaxis are being spotted all over Austin!

Here’s another spotted within the last hour: https://t.co/79l1RHpL5d pic.twitter.com/bOIlZYgs0U

— TESLARATI (@Teslarati) June 18, 2025

It is easy to tell that there is nobody in the driver’s seat of this vehicle. Tesla is using its white interior on this particular mule, making it incredibly simple to recognize that no human is controlling the car.

Whether Tesla will still meet the June 22nd deadline remains to be seen, but it is no secret that the company is prioritizing safety ahead of offering public rides.

Tesla will initially roll out the Robotaxi platform in Austin, but it has already started the regulatory process in other areas, specifically California.

The National Highway Traffic Safety Administration (NHTSA) is also helping to streamline the process for companies developing driverless vehicles by giving exemptions to automakers. It will make things much more efficient, benefiting Tesla and other car companies that have similar plans.

Tesla Robotaxi just got a big benefit from the U.S. government

Elon Musk

Elon Musk teases Tesla Optimus Gen 3 capabilities: ‘So many improvements’

If you thought Optimus Gen 2 was impressive, Tesla might have a surprise for you.

Published

17 hours ago

June 18, 2025

Joey Klender

Credit: Tesla Optimus | X

Elon Musk has teased that huge improvements are coming to Tesla’s Optimus humanoid robot, which is arguably the product that the company is developing with the most potential for everyday use by consumers and valuation increases from a financial perspective.

Optimus is still in the development stages, but Tesla has made great strides in its development over the past several years. It started as a simple idea that was unveiled with a human being in a spandex suit.

Tesla posts Optimus’ most impressive video demonstration yet

Just a few years later, Tesla has developed several humanoid robot prototypes that have made their way to influencers and have lent a helping hand around the company’s manufacturing facilities.

Tesla has already introduced two generations of Optimus, as the most recent release featured a vast number of improvements from the initial version.

The following is a list of things Tesla improved upon with Optimus Gen 2 compared to Gen 1:

Tesla introduced a weight reduction of roughly 22 pounds, improving efficiency and agility
Optimus Gen 2 had a walking speed that improved by 30 percent over Gen 1
Tesla developed more capable hands that had 22 degrees of freedom, double that of Gen 1. This improved object handling
Optimus Gen 2 had a 2-degree-of-freedom neck, as Gen 1’s was fixed
Tesla integrated actuators and sensors for better performance. This includes things like foot force/torque sensing, articulated toe sections that are close to human foot geometry for better balance and movement
Optimus Gen 2 has 28 degrees of overall freedom, improving flexibility from the first generation
Tesla’s Optimus Gen 2 can do more than Gen 1, and has shown improved motor control and precision, doing things like squats, yoga poses, dancing, and even poaching an egg

These changes essentially brought Tesla closer to what will be the Optimus version that makes it to production. The company has plans to start production for the public in 2026, but some units will be manufactured for internal use within its factories as soon as this year. Tesla has said it could scale to 100,000 units or more by next year.

Musk also revealed to Teslarati recently that the company is in the process of building the production line that will bring manufacturing rates of Optimus to that level.

However, there is another design of Optimus coming, and Musk says it will feature “so many improvements”:

So many improvements to come in the next design of Optimus

— Elon Musk (@elonmusk) June 18, 2025

Tesla has said that Optimus will have the capability to perform tedious and time-consuming tasks like folding laundry, babysitting, cooking, walking the dog, and plenty of other things. However, it will be super impressive to see it do things that require true coordination, like threading a needle, for example.

Musk did not hint toward any specific developments that Tesla will aim for with Optimus Gen 3, but the sky is the limit, especially as it will be performing some manufacturing tasks across its factories.