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Tesla Model S vs. Toyota Mirai Comparison

Published

11 years ago

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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:

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  • 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

Tesla Model S vs. Toyota Mirai Infographic

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.

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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!

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Originally published on EVannex

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Tesla shares rare peek at Semi factory’s interior

The new video of the Tesla Semi factory was posted by the official Tesla account on X.

Published

10 hours ago

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November 7, 2025

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Credit: @HinrichsZane/X

Tesla has shared a rare peek inside the factory of the Tesla Semi, which is expected to start production next year. Based on the video, it appears that work in the facility’s interior is ongoing, just as hinted at by drone flyers of the site. 

Tesla Semi factory

The new video of the Tesla Semi factory, which is located close to Giga Nevada, was posted by the official Tesla account on X. While the video was short at less than 30 seconds long, it did show several parts of the factory’s interior, from its gigantic machines to its expansive space. The company also showed some initial production units of the Semi operating around the site.

Elon Musk shared a quick update on the Tesla Semi’s production at the 2025 Annual Shareholder Meeting. While addressing the company’s shareholders, Musk confirmed that production of the Semi is on track for 2026.

“Starting next year, we (will) manufacture the Tesla Semi. So this, we already have a lot of prototype Tesla Semis in operation. PepsiCo and other companies have been using the Tesla Semi for quite some time. But we will start volume production at our Northern Nevada factory in 2026,” Musk said.

Tesla Semi redesign

Apart from Elon Musk’s confirmation that the Semi will indeed enter production next year, Tesla also showed an image of the Class 8 all-electric truck’s overall look. Based on a slide that was shown during Musk’s presentation, it appears that the Semi has undergone a pretty major redesign. The redesigned Semi features updated design cues that align with the company’s current lineup.

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Immediately noticeable from the Semi’s updated design is its front end, which now feature headlights that resemble the style of the Cybertruck, Cybercab, and the new Model Y. Several other changes appear designed to improve aerodynamics, with Tesla now stating that the Semi has an efficiency of 1.7 kWh per mile. Side cameras, likely for FSD, are also quite prominent on the redesigned Semi.

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Elon Musk

Tesla says texting and driving capability is coming ‘in a month or two’

“In the next month or two, we’re going to look at the safety statistics, but we’re going to allow you to text and drive, essentially.”

Published

18 hours ago

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November 7, 2025

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Credit: Tesla

Tesla CEO Elon Musk said that within the next month or two, the company will be able to open the ability for people to text and drive because its Full Self-Driving suite will be robust enough to allow drivers to take their attention away from the road.

In its current state, Tesla Full Self-Driving is a supervised driver assistance suite that requires the vehicle operator to maintain control of the vehicle and pay attention to the road surroundings.

However, the company has been aiming to release a fully autonomous version of the Full Self-Driving suite for years, teasing its future potential and aiming to release a Level 5 suite as soon as possible.

CEO Elon Musk believes the company is on the cusp of something drastic, according to what he said at yesterday’s Annual Shareholder Meeting.

One thing Musk hinted at was that the company should be able to allow those sitting in the driver’s seat of their cars to text and drive “in the next month or two,” as long as the statistics look good.

He said:

“In the next month or two, we’re going to look at the safety statistics, but we’re going to allow you to text and drive, essentially.”

The company recently transitioned to its v14 Full Self-Driving suite, which is its most robust to date, and recently expanded to Cybertruck, completing its rollout across the vehicle lineup.

Currently, Tesla is running v14.1.5, and when major improvements are made, that second number will increase, meaning v14.2 will be the next substantial improvement.

Musk said that v14.3 will be when you can “pretty much fall asleep and wake up at your destination.”

We’ve heard a considerable amount of similar statements in the past, and Tesla owners have been conditioned to take some of these timeframes with autonomous driving with a grain of salt.

However, with the upgrades in FSD over the past few months, especially with the rollout of Robotaxi in Austin, which does not utilize anyone in the driver’s seat for local roads, it does not seem as if autonomy is that far off for Tesla.

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Tesla Semi undergoes major redesign as dedicated factory preps for deliveries

The Semi has been one of the most anticipated products in the Tesla lineup due to the disruption it could cause in the trucking industry.

Published

19 hours ago

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November 7, 2025

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Tesla put its all-electric Semi truck through quite a major redesign as its dedicated factory for the vehicle is preparing for initial deliveries to the public starting next year.

The Semi has been one of the most anticipated products in the Tesla lineup due to the disruption it could cause in the trucking industry.

It has already been in numerous pilot programs for some pretty large companies over the past couple of years, PepsiCo. being one of them, and it is moving toward first deliveries to other companies sometime in 2026.

Yesterday at the 2025 Annual Shareholder Meeting, Tesla unveiled its new Semi design, which underwent a pretty significant facelift to match the aesthetic and vibe of the other vehicles in the company’s lineup.

Additionally, Tesla announced some other improvements, including changes to efficiency, and some other changes that we did not get details on yet.

The first change was to the design of the Semi, as Tesla adopted its blade-like light bar for the Class 8 truck, similar to the one that is used on the new Model Y and the Cybertruck:

There also appear to be a handful of design changes that help with aerodynamics, as its efficiency has increased to 1.7 kWh per mile.

Tesla also said it has an increased payload capability, which will help companies to haul more goods per trip.

All of these changes come as the company’s Semi Factory, which is located on the same property as its Gigafactory in Reno, Nevada, is just finishing up. In late October, it was shown that the Semi facility is nearly complete, based on recent drone imagery from factory observer HinrichsZane on X:

Tesla Semi factory looks nearly complete

The factory will be capable of producing about 50,000 Tesla Semi units annually when it is completely ramped. The company has major plans to help get the Semi in more fleets across the United States.

Other entities are also working to develop a charging corridor for electric Class 8 trucks. The State of California was awarded $102 million to develop a charging corridor that spans from Washington to Southern California.

Another corridor is being developed that spans from Southern California to Texas, and 49 applicants won $636 million from the Department of Transportation for it.

Tesla requested funding for it, but was denied.

The Semi has been a staple in several companies’ fleets over the past few years, most notably that of Frito-Lay and PepsiCo., who have reported positive experiences thus far.

Musk said last year that the Semi had “ridiculous demand.”

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