Engineering Explained
Automakers cut more fleetwide emissions and safeguard profit margins by improving internal combustion engines across entire lineups than by diverting finite capital to low-volume electric models.
AI-assisted summary of Why Gas Engines Are Far From Dead - Biggest EV Problems — original source. Check the original for full context.
Source published:
Key ideas
- Internal combustion remains far superior in physical energy density: a single gallon of gasoline contains 33.7 kWh of energy, which is roughly 13 times more volumetrically dense and 50 times lighter than top 2018 lithium-ion battery cells. (1:21)
- Automakers face steep financial hurdles with electrification, as long-range EV powertrains cost about $16,000 to manufacture compared to $6,500 for internal combustion engines, requiring an average sale price near $48,000 to achieve profitability. (7:05)
- For automakers with constrained R&D budgets, achieving a modest 10% emissions reduction across an entire gas fleet cuts corporate lifecycle emissions by 10%, doubling the environmental benefit of releasing an EV that only captures 10% of sales. (9:45)
- Global EV market share sat at roughly 2% across 2018 and 2019, held back by infrastructure gaps for street and apartment parkers and consumer tendencies to purchase for rare edge cases like remote road trips. (11:32)
Detailed notes
## Background Published by Jason Fenske on the YouTube channel Engineering Explained on February 5, 2020, this video explores why automakers are continuing to develop internal combustion engines despite the industry's shift toward electric vehicles. The description outlines how the presentation breaks down scientific hurdles, environmental trade-offs, manufacturing profitability, and consumer behavior to explain why combustion technology remains vital.
## TL;DR Host Jason Fenske provides an engineering and economic defense of continued internal combustion engine development, despite owning and appreciating electric vehicles himself. He highlights that gasoline holds dramatic volumetric and gravimetric energy density advantages over current lithium-ion batteries, which impose severe packaging and weight penalties on heavy or long-range transport. From a business and environmental standpoint, EV powertrains remain expensive to manufacture, and automakers with finite R&D budgets can often achieve greater fleetwide emissions cuts by improving all combustion cars rather than selling a low volume of clean EVs. Finally, practical consumer realities—including street parking, road-trip edge cases, and current low EV adoption—demonstrate that combustion engines remain necessary for decades to come.
## Atmosphere & style The presentation carries the clear, analytical feel of an engaging engineering lecture, balancing whiteboard math and technical citations with casual humor. Fenske uses relatable visual props, such as cans of sparkling water and gallon jugs, to make abstract energy density metrics immediately tangible. The tone remains measured, pragmatic, and refreshingly devoid of partisan EV-versus-gas hostility, presenting a candid look at technological and economic compromises.
## Bulletin - [01:21](https://www.youtube.com/watch?v=Hatav_Rdnno&t=81s) Internal combustion remains far superior in physical energy density: a single gallon of gasoline contains 33.7 kWh of energy, which is roughly 13 times more volumetrically dense and 50 times lighter than top 2018 lithium-ion battery cells. - [07:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=425s) Automakers face steep financial hurdles with electrification, as long-range EV powertrains cost about $16,000 to manufacture compared to $6,500 for internal combustion engines, requiring an average sale price near $48,000 to achieve profitability. - [09:45](https://www.youtube.com/watch?v=Hatav_Rdnno&t=585s) For automakers with constrained R&D budgets, achieving a modest 10% emissions reduction across an entire gas fleet cuts corporate lifecycle emissions by 10%, doubling the environmental benefit of releasing an EV that only captures 10% of sales. - [11:32](https://www.youtube.com/watch?v=Hatav_Rdnno&t=692s) Global EV market share sat at roughly 2% across 2018 and 2019, held back by infrastructure gaps for street and apartment parkers and consumer tendencies to purchase for rare edge cases like remote road trips.
## Key takeaways - [00:00](https://www.youtube.com/watch?v=Hatav_Rdnno&t=0s) Despite widespread EV optimism, continuing to refine and develop internal combustion engines remains an essential scientific, economic, and environmental strategy. - [01:21](https://www.youtube.com/watch?v=Hatav_Rdnno&t=81s) A single gallon of gasoline contains 33.7 kWh of energy, holding more total energy than the complete battery pack of an original first-generation Nissan Leaf. - [02:08](https://www.youtube.com/watch?v=Hatav_Rdnno&t=128s) Gasoline is roughly 13 times more energy dense by volume than the best-performing 2018 lithium-ion production cells, which maxed out at 684 Wh/L. - [04:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=245s) At the cell level, lithium-ion battery storage weighs approximately 50 times more than an equivalent amount of gasoline, while complete packs can exceed a 100-to-1 mass penalty. - [05:44](https://www.youtube.com/watch?v=Hatav_Rdnno&t=344s) Severe battery weight penalties render heavy transport, long-distance aviation, and freight impractical for full electrification under current chemistries. - [07:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=425s) Electric cars carry an average initial purchase premium of roughly $12,000, creating an adoption barrier despite lower lifetime fuel and maintenance costs. - [08:30](https://www.youtube.com/watch?v=Hatav_Rdnno&t=510s) An EV powertrain costs roughly $16,000 to produce versus $6,500 for an ICE equivalent, forcing EVs to hit an average selling price of $48,000 before automakers become profitable. - [09:01](https://www.youtube.com/watch?v=Hatav_Rdnno&t=541s) Because mass-market $30,000 combustion vehicles deliver far healthier profit margins, legacy manufacturers rely on gas platforms to sustain their core business operations. - [09:45](https://www.youtube.com/watch?v=Hatav_Rdnno&t=585s) A 10% efficiency improvement across a 100% combustion lineup yields twice the fleetwide emissions reduction of launching an EV that achieves 10% of sales with half the lifecycle footprint. - [11:32](https://www.youtube.com/watch?v=Hatav_Rdnno&t=692s) Global market share for EVs remained at approximately 2% through 2018 and 2019, meaning 98 out of 100 car buyers still walked away with an internal combustion engine. - [12:17](https://www.youtube.com/watch?v=Hatav_Rdnno&t=737s) Charging convenience heavily favors homeowners with private garages, leaving millions of apartment dwellers and street parkers without practical charging access. - [12:45](https://www.youtube.com/watch?v=Hatav_Rdnno&t=765s) Consumers routinely buy vehicles for the '5% mentality'—rare edge cases such as hauling or spontaneous road trips to remote areas where charging networks are nonexistent. - [13:56](https://www.youtube.com/watch?v=Hatav_Rdnno&t=836s) Advanced internal combustion engineering concepts like pre-chamber ignition and gasoline compression ignition remain rational, high-impact paths to lowering global transportation emissions.
## Detailed walkthrough ### [00:00](https://www.youtube.com/watch?v=Hatav_Rdnno&t=0s) Introduction: Why Internal Combustion Still Matters
Jason Fenske opens by observing that the automotive industry, having generated massive wealth from internal combustion engines (ICE), claims the combustion engine is far from dead. While cynics might dismiss this as self-serving corporate talk, he believes the industry is entirely correct. He clarifies his stance right away: he is not advising anyone against buying an electric vehicle—he owns an EV himself and thinks they are great. Instead, the video aims to provide concrete evidence showing why continuing to develop and refine combustion engines remains essential.
A persistent frustration prompts this breakdown: viewers often comment on engine tech videos asking why automakers waste capital refining gasoline engines when the future belongs to electricity. As Fenske notes, creating this resource has a personal motive: “so a big part of this video is for selfish reasons so the next time that someone in the comments is bashing combustion engines i can say hey you know there still are good reasons why they exist here's the link”. He establishes four broad categories to evaluate the issue: science, environment, cost, and the consumer.
[01:21](https://www.youtube.com/watch?v=Hatav_Rdnno&t=81s) The Science: Energy Density by Volume
Turning to physics, Fenske explains that the single greatest scientific hurdle facing electric cars is energy density—the amount of energy that fits into a given physical space. Using a gallon jug of water as a visual prop, he cites the EPA standard stating that a single gallon of gasoline contains 33.7 kilowatt-hours (kWh) of potential energy. That lone gallon stores more total energy than the complete battery pack found in the first-generation Nissan Leaf.
Acknowledging that battery chemistry has advanced since the early Leaf days, Fenske references a 2018 study benchmarking eight different lithium-ion battery manufacturers. The absolute best volumetric density recorded was 684 watt-hours per liter (Wh/L). To visualize this disparity, Fenske arranges cans of LaCroix sparkling water on his desk to represent battery volume, jokingly adding that this was “more than just an elaborate plan to make my groceries tax deductible”. The math reveals that packing 33.7 kWh of energy at 684 Wh/L requires 139 individual cans. Gasoline boasts roughly 13 times the volumetric energy density of 2018's best production lithium-ion cells.
While critics might point out that liquid fuel sits in a uniform container while cans are separate objects, Fenske stresses that real-world batteries consist of thousands of individual cells that inherently waste space. Furthermore, the 139 cans account strictly for cell volume without including wiring, cell interconnects, thermal management channels, or the structural casing that forms an automotive pack. With packaging included, or if comparing against the study's worst-performing cell (which exhibited under half the density and would require nearly 280 cans), the space penalty grows even larger.
```mermaid flowchart TD accTitle: Volumetric Energy Comparison for 33.7 kWh accDescr: Visualizing the volume needed to store 33.7 kilowatt-hours of energy in gasoline versus lithium-ion cells.
subgraph Fuel["Gasoline Solution"] A["1 Gallon of Gasoline<br/>(33.7 kWh Energy)"] end
subgraph Cells["Lithium-ion Cells (2018 Best)"] B["139 Cans of Volume<br/>(684 Wh/L Cell Density)"] C["+ Structural Pack Hardware<br/>+ Cooling & Wiring Channels"] B --> C end
Fuel -. "13x more compact by volume".-> Cells ```
- 1 gallon of gasoline holds approximately 33.7 kWh of energy. - First-generation Nissan Leaf battery capacity was smaller than the energy contained in 1 gallon of fuel. - Best 2018 lithium-ion cell density measured was 684 Wh/L. - Matching 1 gallon of gasoline required 139 12-oz cans of volume in pure cell form.
[04:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=245s) The Science: The Extreme Weight Penalty
While volumetric constraints force engineers to sacrifice cabin space or design larger vehicles, weight imposes an even harsher limitation on electrification. A single gallon of gasoline weighs roughly 6 pounds. Drawing from the same 2018 research data, the highest gravimetric energy density observed was roughly 240 watt-hours per kilogram (Wh/kg).
Holding up a can of grapefruit (Pamplemousse) LaCroix, Fenske illustrates that an equivalent amount of stored electrical energy in lithium-ion form weighs roughly 50 times more than gasoline at the cell level, with structural packaging adding even more bulk. When looking at full assemblies, the original Nissan Leaf pack weighed in excess of 600 pounds to supply less energy than a 6-pound jug of fuel, marking a greater than 100-to-1 mass discrepancy:
> “so if you were to look at a gallon of gasoline that weighs six pounds this has more energy in it than the original leaf's battery pack which weighed over 600 pounds over a hundred times heavier for less energy”
This mass difference dictates where electrification works. In stationary home backup systems, weight and volume are largely irrelevant. For passenger cars, current battery weight fits in a workable "sweet spot." However, heavy commercial transport, aviation, freight trains, and heavy towing struggle under current battery chemistries. An electric airliner would require so much battery mass to achieve range that it could carry no passengers or cargo. While densities will steadily improve, Fenske argues that until batteries reach parity, refining combustion engines remains essential: “well if there are applications today that currently require combustion engines we might as well make those combustion engines as clean and as good and as good and as efficient as possible while we still need them”.
[07:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=425s) The Cost: Purchase Price vs. Automaker Profitability
Fenske divides the economics into consumer expenses and manufacturer margins. An issue of SAE's *Automotive Engineering* magazine notes that an electric car carries an average upfront premium of around $12,000 compared to an equivalent combustion vehicle. Lower scheduled maintenance and cheaper fueling offset this over time, but the high initial sticker price remains an entry barrier. This dynamic breeds a classic chicken-and-egg dilemma: low sales volume prevents economies of scale from driving prices down, yet high prices keep sales volumes depressed.
Fenske pushes back on the idea that purchase price alone stalls mass adoption, arguing that vehicle purchases are rarely strictly analytical:
> “reason being is that if the only thing people were concerned about when buying a new car was total cost of ownership we'd all just be driving old 90s honda civics and we're not”
Automobile buying is deeply emotional; otherwise, luxury brands and performance vehicles would not exist. Instead, the true economic headwind lies in manufacturer profitability. Citing data from AlixPartners, Fenske notes that an EV typically needs to command a $48,000 price point to yield a profit. The powertrain components of a long-range EV cost roughly $16,000 to produce, compared to only $6,500 for a conventional ICE powertrain. Consequently, on an entry-level $30,000 vehicle, an automaker clears a far healthier margin selling an ICE model over an electric one. Because businesses are driven by profits, legacy carmakers will continue refining combustion platforms to safeguard their bottom line. Turning toward the third pillar—the environment—Fenske sets up the sheer scale of the global vehicle fleet, which is projected to grow to two to three billion vehicles worldwide.
- Electric vehicles carried roughly a $12,000 initial purchase price premium over comparable gas cars (per SAE). - EV profitability threshold required an average transaction price of around $48,000 (per AlixPartners). - Long-range EV powertrain production costs stood near $16,000, versus $6,500 for an ICE powertrain.
[09:45](https://www.youtube.com/watch?v=Hatav_Rdnno&t=585s) The Automaker's Dilemma: EV Math vs. ICE Improvements
With an enormous volume of internal combustion engine (ICE) vehicles projected to be sold between now and 2045, making those engines as clean as possible is an environmental necessity. Jason pulls out his whiteboard to analyze the problem from the perspective of an automaker with finite capital. He sets up a hypothetical case study using a smaller manufacturer—naming Mazda as the prime example—that operates with limited research and development funds and wants to lower its fleetwide lifecycle emissions. The automaker faces a strategic fork in the road: pour all available R&D capital into developing a brand-new battery electric vehicle, or invest that money into improving the efficiency of its existing internal combustion engines.
```mermaid flowchart TD accTitle: Automaker Fleet Emissions Comparison accDescr: Comparing the fleet emissions reduction of developing an EV versus improving internal combustion engines.
subgraph PathA["Option A: Develop Electric Vehicle"] A1["Allocate R&D to EV"] --> A2["EV captures 10% of total sales"] A2 --> A3["EV is 2x cleaner on lifecycle (50% reduction)"] A3 --> A4["Overall fleet emissions reduced by 5%"] end
subgraph PathB["Option B: Improve Combustion Engine"] B1["Allocate R&D to cleaner ICE"] --> B2["Achieve 10% emissions reduction"] B2 --> B3["Applies across 100% of vehicle sales"] B3 --> B4["Overall fleet emissions reduced by 10%"] end ```
Under the first scenario, if the company builds an electric car and achieves an optimistic 10% share of total sales with an EV that is twice as clean over its full lifecycle compared to an ICE model, the math only yields a modest outcome. Because the remaining 90% of the fleet remains untouched, the company's overall emissions drop by just 5%. Conversely, if that same budget is spent developing a cleaner combustion technology—such as a system that cuts emissions by 10% across the board—that benefit applies to 100% of the fleet, yielding an overall 10% fleetwide emission reduction. As Jason argues, “It was actually cleaner and likely much more profitable for your business to develop a new internal combustion engine technology than to go the EV route.”
- Projected combustion engine sales through 2045 provide strong justification to continue optimizing the platform. - An EV accounting for 10% of sales with half the lifecycle emissions cuts corporate fleet emissions by only 5%. - A 10% emissions reduction applied across an entire 100% combustion lineup delivers double the net impact (a full 10% reduction).
---
[11:32](https://www.youtube.com/watch?v=Hatav_Rdnno&t=692s) Consumer Reality, Practical Convenience, and the Logic of Ongoing ICE Development
Automakers cannot build in a vacuum; they depend on consumer demand. In both 2018 and 2019, electric cars represented only around 2% of total global market share. Translating that to a showroom floor, out of every 100 customers buying a vehicle, only two walked away with an electric car. While marketing plays a role in driving interest, real-world utility and lifestyle constraints dictate buying behavior. Jason emphasizes human psychology, noting, “Something I've always said and will continue to say is that people are lazy.” For an EV to win over average buyers, it must be more convenient than what they currently drive. While an EV is undeniably convenient for a homeowner with a dedicated garage and a Level 2 fast charger, it is far less practical for the millions of drivers who live in apartment complexes or rely strictly on street parking.
Buyers also consistently purchase vehicles sized and equipped for rare edge cases—the "5% mentality." Just as many people purchase full-size pickup trucks simply because they might haul mulch once a year, buyers choose gasoline vehicles because they know they can embark on a cross-country road trip anywhere without charging bottlenecks. Jason relates this directly to his own garage: although he owns a Tesla, he has intentionally left it behind and taken his Subaru Crosstrek on specific road trips because the necessary charging infrastructure simply did not exist along his route.
For multi-car households with a garage, having an EV for local commuting makes complete sense, but single-car households and street parkers face entirely different trade-offs. Returning to the automaker's dilemma: if a smaller manufacturer like Mazda directs all its resources toward an EV that only 2% of the car-buying public actually purchases, the net environmental benefit to their fleet is negligible. Jason concludes by affirming that he loves electric cars and loves his own Tesla, but notes that under current technological, infrastructural, and economic conditions, continuing to engineer novel combustion concepts—such as pre-chamber ignition and gasoline compression ignition—remains both logically sound and essential.
- Global market share for electric vehicles was approximately 2% in both 2018 and 2019. - Vehicle buying decisions are frequently driven by edge-case usage occurring roughly 5% of the time (e.g., road-trip freedom or towing/hauling). - Real-world infrastructure gaps still force multi-car owners like Jason to choose gas vehicles (such as his Subaru Crosstrek over his Tesla) for destinations lacking reliable chargers. - Advanced internal combustion concepts like pre-chamber ignition and homogeneous charge compression ignition / gasoline compression ignition remain vital, rational engineering paths.
## Notable quotes > [09:45](https://www.youtube.com/watch?v=Hatav_Rdnno&t=585s) It was actually cleaner and likely much more profitable for your business to develop a new internal combustion engine technology than to go the EV route. — Jason Fenske
> [07:05](https://www.youtube.com/watch?v=Hatav_Rdnno&t=425s) if the only thing people were concerned about when buying a new car was total cost of ownership we'd all just be driving old 90s honda civics and we're not — Jason Fenske
## Mentioned Jason Fenske, Engineering Explained, Nissan Leaf, Tesla, Subaru Crosstrek, Mazda, Honda Civic, LaCroix, EPA, SAE, Automotive Engineering, AlixPartners
## Video description Why Are Car Makers Still Developing Internal Combustion Engines? Subscribe for new videos every Wednesday! - https://goo.gl/VZstk7 Recommended Books & Car Products - http://amzn.to/2BrekJm
Why are car manufacturers still improving and spending money on combustion engines in the year 2020? Should all development research be going into electric cars and electric vehicle technology? Unfortunate news if you think ICE transportation is going away in the near future to be solely replaced by electric vehicles (EVs).
The internal combustion engine is still incredibly relevant today, and can still use further improvements in order to reduce global emissions. In this video we'll discuss scientific issues facing electric cars, environmental problems with ditching combustion engine research, how cost impacts customer decisions and manufacturer profits, and ultimately how consumer choice plays a large role in this industry. If you've ever wondered why combustion engines are still being developed, this video breaks down all the details.
Related Videos: Are EVs Actually Cleaner? - https://youtu.be/6RhtiPefVzM Are Teslas Green? - https://youtu.be/2rywz73vwKw Are Lithium Batteries Bad? - https://youtu.be/1mXSMwZUiCU Living With An Electric Car - https://youtu.be/cXkRcuwoIm4
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