Powering an engine with hydrogen is by no means a new concept. The problem has always been the storage of the fuel.

Look at the Toyota Mirai. Only available in California in North America. Several of the fuelling stations where shut down and Toyota is currently off loading them with a $40,000 discount. You think there is a lack of electric charging now, wait till Toyota tries and rolls out hydrogen or ammonia(Toyota’s other engine) stations. How much does it cost to fill up a Toyota Mirai? True Zero is currently the lead hydrogen supplier in California, and currently charges $36 for a kilogram. The Mirai accommodates 5.6 kg of hydrogen in its 142.2-liter tank, meaning you'll have to spend $201.60 to refuel. This is an obscene amount that both fossil fuels and electricity drastically outprice.

"It won't be long before we start seeing these cars on the road..." Right, because hydrogen powered vehicles have been less than ten years from viable consumer sales for over 40 years.

“The pessimist sees difficulty in every opportunity. The optimist sees opportunity in every difficulty.” Never give up !

Oil companies have been shutting these down for over forty years. Dallas's bus fleet was shut down. Yes, Dallas had a fleet of fuel cell buses.

I have a 1991 toyota camry v6..that is absolutely an amazing engine it has been one of the greatest engines toyota has ever made and when I tell you how excellent this engine is believe me they're the best on the planet..

The only problem with your premise of the ease of using Hydrogen combustion engines is that hydrogen fuel prices have exploded from 1.93/kg in Canada last year, to $37/kg in the US today. That, combined with the fact that there are only some 44 hydogen fueling stations remaining in the U.S. makes this engine economically unviable.

Are H2 fuel cells available in a portable model, similar to gas cans? If you could refuel from a portable tank, that would go a long way to lessen the worry about running out.

Hydrogen is not one of the most abundant elements in the universe, it is THE most abundant element in the universe.

Like others here . I own Toyota a real thanks in hard times the cheap cars I had were beyond reliable and helped me keep up to this moment while others suffered heavy damages I still run a tundra , had a Corolla and Camry old models sold running like new . Never had Trany or engine issues

The one negative is the filler hose can freeze when pumping hydrogen so the next vehicle will have to wait a bit for the nozzle to warm up.

The biggest issue is a Hydrogen supply, transportation and dispensing infrastructure. With today s pricey inflated economy I question how to afford same. My last car purchase for a 18 year old used SUV was aprox. 4K and we have had to repair and maintain for more. At 78 years young, my family doesn't have deep pockets for brand new cars and the wherewith to support a new Hydrogen supply system. If you gave us a new Hydrogen vehicle and not a single filling station in State I'm not a willing taker!

Whan Hydrogen is burned with air instead of Oxygen, the combustion creates nitrous oxides. So it is not only producing water. On top of that: Where does the Hydroben come from? It has to be produce with energy. That has to come from somewhere.

One Pakistani engineer who introduced this idea was kidnapped by agencies and no one know where he is and what had hapend with him.

Modern cars are getting as complicated as fighter jet aircraft and just as expensive to maintain.

Near zero emissions completely ignoring the large carbon footprint of the manufacturing of the Hydrogen, that’s like saying EVs have zero emissions, in the same way your carbon footprint is increased when charging an EV from the grid, your carbon footprint and that of the H2 vehicle is also increased when you refill the H2 tanks as the Hydrogen also has to be manufactured with a carbon footprint. They need to stop using the term zero emissions because it’s not entirely accurate because it’s more a case of moving the carbon footprint or emissions to a different location.

As far as I’m aware electrolysis injector was developed in the seventies in which its inventor suddenly lost his life! & the blue prints were left for the world to see, so I don’t think it’s fare to say that Toyota has invented a water powered engine.

I looked into a Mirai, and the cost per mile was about the same as a 15mpg car at $5/gallon. We need more and cheaper hydrogen for this to be realistic.

I used to drive my old '86 Celica down the motorway in 4th gear just so i could listen to that engine at 6000rpm. It literally sang to you, so if anyone can make this work it's Toyota.

People fear gas in a pressure vessel. Don't forget we carry 20 gallons of gasoline under the back seat. 😊

problem is there is no hydrogen fuel stations

I have been an advocate of hydrogen power for cars since the early 1980's. I first got interested in hydrogen when I worked in an experimental plant that operated on 4 million cubic yards of heated hydrogen. The plant did not burn hydrogen but used it to purify the product. Now I do not pretend to understand how it worked but I was there 3 years and we never had a major accident. No Hindenburg like fires. The only byproduct of this was water and lots of it, which we recycled to produce more hydrogen. I truly hope Toyota can make this work. Yes I would buy one if it became available. I know from college studies just how environmentally impactful battery production truly is. It is nasty!

Boy, wouldn't it be nifty if this engine actually existed in the real world.

Question is how much would it cost compare to EV's? And hope tjey woupd also make small household generators

Why are they so against battery powered EVs I'll tell you PARTS they want to make money selling parts to us. Also hydrogen cost a lot it would cost over $100 to fill up my EV cost me $11 to fully charge I'll keep my EV

Anther "Gonna do" from Toyota which will never happen, like the super battery of 10 years ago... Toyota is "full of it"....

Hydrogen isn't the most abundant element on it's own and that's the problem. It's such a small atom it can travel through aluminium and the first air ships had to use cow guts to line the storage to stop the atoms escaping. There is not one efficient means to make it and Toyota must have something to produce it cheaply as the loss from electrolyzing it is too great to be used commercially.

Well demonstrated Toyota's futuristic! HICEV: "Hydrogen engine" zero carbon emissions , having same comfortability & power performance of traditional gas engine. AMAZING! new ideas of technology. The question is how much it cost , the price per volume or per liter/gallons difference between Hydrogen & Gasoline? & its consumption rate per kilometer/mile? (5 Kilograms = 300 Miles)......I'm an Aircraft Mechanic working here in S.Korea

The question on my mind is how complex are these engines, the beauty of an EV is its simplicity. Servicing of an EV is certainly in theory far cheaper than a ICE model and I suspect a hydrogen one too.

What pressure is the hydrogen stored at and who are they partnering with to generate and distribute the hydrogen fueling stations ? Isn't most hydrogen currently produced stripped from Methane / Natural gas ? Who is currently generating hydrogen gas in industrial quantities from renewable sources?

Bloody hell, 455bhp and it’s a V8! I want one.

What happens in vehicle mishaps and crashes? How Volatile is the engine?

The thing that makes a battery powered vehicle undesirable is cold weather. They just don't work when the weather turns cold. Living in Florida? Yeah, battery power is practical. Minnesota in December? Good luck. Hydrogen solves the cold weather problem just like a gasoline do. It's a winner. I give Toyota two thumbs up.

Hydrogen powered cars are a bad idea specifically because the fuel must come from electricity. Every time you convert from one form of energy to another, you lose a percentage, and the more times you do this, the quicker those losses add up. So for this vehicle you have to produce the electricity from some combustion or renewable resource like solar, hydro or wind, loss #1. Then you convert back from electricity into hydrogen through electrolysis of water (either through a battery powered fuel cell or a fueling station that produces it on site), loss #2. Finally, you convert back into mechanical energy through internal combustion engine and drivetrain, which as it sits now with that tech you're losing at least 60% of the combusted fuel before it actually puts power to the ground, loss #3, which is enormous. This is why if you're going to go electric, batteries are the bees knees, because you only convert once directly from electrical to mechanical energy, putting power right to the ground. Charging of batteries is a relatively small loss compared to electrolysis as well. The one thing mentioned that's still unsolved is the rare earth metals and lithium needed to make the batteries right now, but overall straight up electric cars will continue to dominate this trend, and these hydrogen engines will be a huge waste of money. If Toyota invests too heavily it may sink the whole company. What companies should really be spending their R&D money on right now is battery tech. If we can get 500+ mile range in battery electric cars that compete price-wise with comparable ICE cars, it's all over for traditional automobiles, especially as oil becomes more and more scarce as time goes on. Mark my words, battery tech has already rendered these hydrogen engines obsolete before they were built, and as batteries get lighter and hold more charge for a given weight, this trend will continue.

Still far too many moving parts/ complexity. So greater costs up front as well as in maintenance. Legacy motors will love it though. Other issue is hydrogen infrastructure, as well as risk. One accident, a la Hindenberg, and byebye public faith in hydrogen vehicles. Meanwhile EVs continue to advance. Soon sodium-ion will replace lithium. EV prices will fall accordingly. And if technology to extend range keeps increasing at 200% every 5 years - we could see general EVs achieving 1,000 miles per charge (it is already possible with the Aptera). I think BOTH may have their niches in the market however. The biggest issue for EVs is infrastructure capacity - but advances in renewable energy production (especially wave technology, and seeing as huge numbers of humans live in coastal cities) should solve that problem.

I finally thought we were not going to have to deal with all of these maintenance problems with combustion engines. Idk I I'm good with electric as long as I don't have to do oil changes, transmission flushes, coolant flushes and coolant water pump, timing belt, serpentine belt, Gaskets replacement, oil leaks, Brakes, brake shoes, brake fluid, Calipers, fuel filters, air filters, and all the other Maintenance costs and Problems. Tesla just plug un plug and go. Getting used to charging all the time I can get used to it. To trade for all these maintenance problems

Toyota is about to follow Sony foot step. Japanese industry did it again and again, didn't catch up with the changes.

Toyota is not the first to use water as fuel for automobile. That technology already existed. However, Toyota may be the first company to produce in a large scale.

hydrogen engines are not a problem and been around for over decade .... Storage of hydrogen in a car is a problem as a liquid requires cryogenic temperatures because the boiling point of hydrogen at one atmosphere pressure is −252.8°C. and need 5,000-10,000 psi tank pressure..

How can these"-water-powered" engines get around the conservation of energy law, to get more energy from burning H2 with O than it takes to separate H2 from O in H2O ?

How do they get around the nitrogen oxide problem with hydrogen combustion engines?

How much dose it cost to fill er up ?

This is scarcely new technology. The internal combustion engine is over 150 years old. And hydrogen is produced from fossil fuels. Yes, it can be made from electricity and water ('Green Hydrogen'), but that is very inefficient and expensive. 'Blue' hydrogen is produced from fossil fuels such as methane or coal into hydrogen, but it is leaky and inefficient. The blue hydrogen process currently being promoted is an environmental con.

How muck cost a kilo of H2?

Toyota already has a hydrogen car out but sales are not very good, in Canada there aren't many locations to be able to fill them.

EV Is way ahead of this and accelerating. EV simplicity and low maintenance is what is fundamental. Then not forgetting, all cars will be driverless in the next 10 to 15 years. You wont own a car, you will not need to. You will be able to hail any type of vehicle you require.

Would the water vapor emissions create black ice during winter? I think with enough vehicles it could be possible. #yikes

The American driving experience. Torque of a gasoline engine is a sad experience compared to an EV. My F150 fill up for $200 compared to $30 for an F150 EV, are you still telling me I'm lucky.

Range? Time required to fill up the tank? Readily accessable fueling stations? Safety?

This concept has been around for decades. I've been waiting and yet it hasn't come to the market.

Toyota destroyed EV... Unless they didn't 😂

The late Eng. Daniel Dingle from the Philippines already made it in 1995....no gov't supported due to effect on national economic revenue.....our loss 😢

Except Hydrogen isn't available at fuel stations

All this tells me is that Toyota has no shot at making EV’s work at a reasonable margin and selling price...and they know it. Hydrogen just isn’t going anywhere, nor are “engines” of any kind; they just can’t compete with motors in performance or in service life.

Water exhaust could be a problem in cold climates. Might be spitting ice cubes in Canada or Alaska Will it start when it's negative forty outside.

How good is the efficiency? Better than something generalized is not a number.

There's no place to refill these. With discounts and rebates. Toyota is basically giving away what's left of the few they built. The only few places left to fill are in SoCal. Worse Idea that batteries. We are all doomed.

Toyota would get Kodak Moment.

Water vapour: Does the mean that the M25, the Peripherique, the Beltway and all rush hour traffic everywhere is going to be travelling on roads that are fog bound and extremely wet. Has anyone asked this question previously?

Toyota you are truly amazing! I hope you achieve all your goals and make this environmentally friendly engine(s) a reality to help save our environment. I just purchased one of your Hybrid vehicles to reduce my carbon footprint and happy to be a small part of the move to be more environmentally friendly on the road. Thank you and the best for your future innovations.

GM was working on this over 15 years ago! The problem with technology is right now it takes more energy to make the usable Hydrogen than using an electric motor which requires much less maintenance and service. Hydrogen is great for large vehicles and vessels, but not best for cars!

From what I’ve heard, it’s not efficient. It takes more energy to produce than you get in return, unless you are Norway with huge hydroelectric production.

That' V8 engine is based on the Lexus 4.3 /4.6 litre quad cam engine that are bulletproof 🙏

Stanley Meyer already did it back in the days ...

The Hindenburg used Hydrogen to stay airborne in early airships, however combustion was actually counterproductive in the overall outcome as a safe method of travel.

Pretty sure this won't fly in the states after all think about the guy that made the car that ran on or the at least the engine that ran on water. He mysteriously died wow. From what I understand the government wasn't real happy with him

They should sound the same because they are the same. Conventional internal combustiom engine.

I love that there will be diversity in eco friendly vehicles. I find it a bit silly to say they will destroy the EV industry though because there are trade-offs that are not really expressed in detail. The complexity of H2O seems greater with some unknowns at scale. Scaling out fuel distribution is described as more intensive electrically at scale. Because these are still piston-driven engines there will be much greater demands for maintenance no matter how well they refine the tech. The driving range is nice, but the use case is fairly limited because both H20 and the EV refueling infrastructures are so immature at this point in time. I think that the refuel is wonderful, but I've down the math for myself for a long commute from Tacoma to Redmond and into Seattle in a day. I am a road dog who enjoys driving (outside of peek hours of course). It seems to me that the day gig and evening gig (musician) can be easily handled by an EV. That equation only changes on really long road trips which are very, very rare. Those anomalies can be handled with short-term rentals frankly. But even a quick charge system could overcome that with just a little bit of extra planning. Pull over for lunch (charge), Bathroom break stop (charge), pull over for a roadside attraction (charge). The only reason it is inconvenient is that we have not built our infrastructure out nearly as robust as it will need to be for either to really replace ICE. I also look forward to battery tech improving right along with Hydrogen. The Lithium requirements are problematic at scale, but what is really silly is projecting that out as a negative on eco-friendliness over time. The lithium extraction is a one-time event whereas going gas-free is a massive win, let alone the super low maintenance cost. I see a future where both these technologies exist side by side. If most families are 2-car families, one might have one of each. The shorter commuter might choose the H20 to minimize maintenance costs, and it is there also for the odd long-range family road trips. One question I have is how we can clean up the electric grid so that either of these platforms can fulfill their environmental promise overall. We have a capacity for wind to offset a fraction of the main sources. Solar combined with battery tech can handle nearly 100% of a two (2) EV car home. And all of these technologies are all so damn young. We all just need to keep on pushin' (Curtis Mayfield).

High school students know H2O made up of hydrogen and oxygen. But how do we set up an entirely new hydrogen production and logistics infrastructure from scratch, around the world. EV is successful, partly because of the battery technology, but more importantly it leveraged on an existing global infrastructure of electricity generation and transmission.

The cost of hydrogen and safety are the major drawbacks to this technology. Storage of hydrogen is a major safety concern. One leak, and you can be blown to bits. How would this engine cope with a crash? Would it explode?

Interesting, I'm confident that Toyota will be successful with this innovation and initiative considering carbon free environment.

All said and done, still this Hydrogen engine has a gazillion moving parts, needs plenty of consumables such as seals, gaskets, all, increasing maintenance costs. Whereas an electric motor has so few moving parts, no need for an engine, gearbox, differentials etc, which contribute to the mass of the vehicle. All controlled by wire.

And so begins the downfall of Toyota... Hydrogen is not the same as petrol. It evaporates at incredible rates - imagine leaving your car for a few days and it's lost 30% of its fuel - that's hydrogen. It still requires a lot of moving parts and servicing - hence far more unreliable than an EV.

This is why you let the industry experts find the solutions and not let a bunch of politicians mandate solutions. They never do proper problem solving and pick whatever feels good, is PC, or WOKE. EVs can be a great city niche vehicle if made smaller like 4 seat golf carts allowed ion more city roads.

I'm not paying $36/Kg of H2 that can only go for 60 miles. For that money, I can fill up my Prius tank with gasoline and go for 500 miles.

Electrify water and H separates from O. .... A highly electrified charge spewed into the combustion chamber of water would negate need for fuel other than distilled water.

Hydrogen has zero use in most places at anything. Certainly not road cars. Some few existing Hydrogen fuelling stations that were set up have been closed.

What about the safety of Pressure & Hydrogen Tanks, Collision test / Impact / Survive rate ?

We heard this statement so many times, still didn’t see anything real. This is absolutely not the future.

the problem with hydrogen is storage. When the needed storage system is heavier than batteries- there is no point.

There is no adequate supply of Hydrogen. In California, where we introduced a few of these cars, the cost of hydrogen, which was already expensive, skyrocketed to 3x gasoline and 17x electric (equivalent). So basically, yeah you can produce a very expensive car that is very expensive to drive around and has no infrastructure. Unlike electric, which you know, is already everywhere and even that is still having distribution issues.

Downside is it’s carbon footprint is huge compared to EV and fossil fuel energy due it being very expensive and hard to produce, they is plenty in the universe just not earth perhaps was used up in passed civilisation that came before us and now long gone

If we look back in history, Stan Myers, who produced this years and years ago and was murdered for this why is Toyota just coming up with it? Big question And when the model T was built years ago, they built it with a little mason jar and ran a one piston in the model in T Ford ?????

Auto makes DON'T WANT machinery to warrantee any more. EV = battery and motors. This thing looks like it'll be a headache to repair, the opposite of where the industry is going.

Just like battery and hydrogen, where do you go to fill it up. Also what is the useful life of batteries and hydrogen cells?

Today I was curiously looking at my wifes sisters car as I've never seen a Toyota Corolla Cross until today. It's not the one mentioned in this video because her's is a HYBRID. I was curious because a Corolla I'm use to seeing in Canada looks nothing like her car. We are also in Thailand and I've yet to see Hydrogen at any station. I have seen them in the USA. Seeing how much Toyota spends on research kind of explains why the vehicles are very expensive.

Simply question or two, has these H2 cars been tested in sub-zero temperatures yet ?? What about adding a regular water tank, to create H2 through electrolysis, if a fueling station isn't available??

Future will combine both types of cars,and hybrids of many,but none will dominate.Some people will prefer electric for in town trips,and hydrogen for road trips,and own both I believe,just as having a sports car and and an SUV in the family portfolio.

All the people who oppose new technologies will not be opposing it when that oil goes up to 10$/gallon in the near future. All the companies will raise oil prices to used all that monies for investing into new infrastructure charging stations etc. Saudi Aramco already sees and knows oil will not be forever so even they investing into new technologies.

Has anyone mentioned the safety of having compressed hydrogen in the car when there is leakage or accident? Anyway, I think hydrogen engine only fits to Japan's energy agenda.

You don't get into the chemistry, but that's what i want to hear. I already understand a huge impact globally etc... but thank you for creating more awareness for this.

This is definitely a game changer. Great work, Toyota. I hope this comes to fruition.

We need this invention to save more money because it's getting too much expensive to live.

FYI，Toyoto is partering with a Chinese auto company to produce EV in China.

What is the operation cost per mile vs Gasoline and Electric?

How much does it cost to drive 100mi. vs a gas vehicle?

so its byproduct is fresh water or salt water? would it be drinkable?

I'll just keep driving my 20 year old Prius.

Why can we not simply use Atmospheric (+) and earth's (-) to easily electrolysis water from H2O to O2 and H2 fuel for these smart hydrogen cars?? ..oh, yeah then it would be free and cheap so that the "royal" controllers would have to earn an honest living. Not sure Hydrogen storage is improved to a fully practical level, yet.

A water powered engine a real pipe dream...