Gas vs. Petrol: Know the Difference
By Shumaila Saeed || Published on December 26, 2023
Gas (short for gasoline) is a liquid fuel used in internal combustion engines, while petrol is the British term for the same substance.
Key Differences
Gas, commonly known as gasoline, is a primary fuel used in internal combustion engines, predominantly in vehicles across North America. It's derived from petroleum and consists of hydrocarbons. Petrol, on the other hand, is simply the British English term for the same substance. In the UK and many Commonwealth countries, "petrol" is used in the same context as "gas" in American English.
Shumaila Saeed
Dec 26, 2023
The term "gas" can sometimes cause confusion, as it may also refer to gaseous fuels like natural gas or LPG (liquefied petroleum gas). However, in the context of automotive fuel, it specifically denotes gasoline. Petrol, in contrast, has a more unambiguous meaning, universally understood to refer to the liquid fuel used in cars and motorcycles.
Shumaila Saeed
Dec 26, 2023
In terms of chemical composition, both gas and petrol are similar, being refined from crude oil and containing a mix of hydrocarbons. The difference lies mainly in the regional terminology. Americans go to a gas station to fill up their cars with gas, while Britons visit a petrol station to refill their vehicles with petrol.
Shumaila Saeed
Dec 26, 2023
Octane ratings, which indicate the fuel's ability to resist engine knocking, are important for both gas and petrol. In the U.S., regular, mid-grade, and premium gas are classified by octane levels. Similarly, in the UK, petrol types like regular unleaded and premium unleaded are differentiated by their octane ratings.
Shumaila Saeed
Dec 26, 2023
Environmental concerns and fuel economy are relevant to both gas and petrol. Advancements in refining processes and additives aim to make both types of fuel cleaner and more efficient. The terms might differ, but the global effort to improve fuel efficiency and reduce emissions is a shared objective.
Shumaila Saeed
Dec 26, 2023
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Comparison Chart
Terminology
American English term for vehicle fuel.
British English term for the same substance.
Shumaila Saeed
Dec 26, 2023
Usage
Used in the United States and some other countries.
Commonly used in the UK and many Commonwealth nations.
Shumaila Saeed
Dec 26, 2023
Other Meanings
Can also refer to gaseous fuels (e.g., natural gas).
Specifically refers to liquid automotive fuel.
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Dec 26, 2023
Refinement
Derived from crude oil, contains hydrocarbons.
Same chemical composition, derived from crude oil.
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Dec 26, 2023
Environmental Impact
Subject to regulations for emissions and efficiency.
Similar regulations and efforts to reduce emissions.
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Dec 26, 2023
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Gas and Petrol Definitions
Gas
A fuel derived from petroleum, used in motor vehicles.
The price of gas has a significant impact on transportation costs.
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Dec 12, 2023
Petrol
The British term for a liquid fuel used in vehicles.
In the UK, petrol prices fluctuate frequently.
Shumaila Saeed
Dec 12, 2023
Gas
A liquid hydrocarbon fuel for engines.
High-performance engines often require premium gas.
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Dec 12, 2023
Petrol
Automotive fuel used in internal combustion engines.
The new model is more efficient in its petrol consumption.
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Dec 12, 2023
Gas
A combustible fuel used in cars and motorcycles.
His motorcycle ran out of gas halfway through the journey.
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Dec 12, 2023
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Petrol
A refined petroleum product for powering engines.
Most family cars in the UK run on unleaded petrol.
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Dec 12, 2023
Gas
The state of matter distinguished from the solid and liquid states by relatively low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, the ability to diffuse readily, and the spontaneous tendency to become distributed uniformly throughout any container.
Shumaila Saeed
Dec 10, 2023
Petrol
A term in British English for gasoline.
Petrol stations in London are easy to find.
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Dec 12, 2023
Gas
Any of various mixtures of flammable gases used for lighting, heating, or cooking.
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Dec 10, 2023
Petrol
Petroleum, a fluid consisting of a mixture of refined petroleum hydrocarbons, primarily consisting of octane, commonly used as a motor fuel.
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Dec 10, 2023
Petrol
(informal) A motor vehicle powered by petrol (as opposed to diesel).
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Dec 10, 2023
Petrol
A volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
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Dec 10, 2023
Petrol
A liquid hydrocarbon mixture used in cars.
She prefers to use premium petrol for her sports car.
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Dec 12, 2023
Gas
(Slang) Someone or something exceptionally exciting or entertaining
The party was a gas.
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Dec 10, 2023
Gas
Matter in an intermediate state between liquid and plasma that can be contained only if it is fully surrounded by a solid (or in a bubble of liquid, or held together by gravitational pull); it can condense into a liquid, or can (rarely) become a solid directly by deposition.
A lot of gas had escaped from the cylinder.
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Dec 10, 2023
Gas
(uncountable) A flammable gaseous hydrocarbon or hydrocarbon mixture used as a fuel, e.g. for cooking, heating, electricity generation or as a fuel in internal combustion engines in vehicles, especially natural gas.
Gas-fired power stations have largely replaced coal-burning ones.
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Dec 10, 2023
Gas
A chemical element or compound in such a state.
The atmosphere is made up of a number of different gases.
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Dec 10, 2023
Gas
(countable) A hob on a gas cooker.
She turned the gas on, put the potatoes on, then lit the oven.
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Dec 10, 2023
Gas
(uncountable) Methane or other waste gases trapped in one's belly as a result of the digestive process; flatus.
My tummy hurts so bad – I have gas.
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Dec 10, 2023
Gas
An internal virtual currency used in Ethereum to pay for certain operations, such as blockchain transactions.
Gas fee
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Dec 10, 2023
Gas
(transitive) To attack or kill with poison gas.
The Nazis gassed millions of Jews during the Holocaust.
He never fully recovered after he was gassed on the Western Front.
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Dec 10, 2023
Gas
(transitive) To impregnate with gas.
To gas lime with chlorine in the manufacture of bleaching powder
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Dec 10, 2023
Gas
(transitive) To singe, as in a gas flame, so as to remove loose fibers.
To gas thread
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Dec 10, 2023
Gas
(US) To give a vehicle more fuel in order to accelerate it.
The cops are coming. Gas it!
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Dec 10, 2023
Gas
(slang) comical, zany; fun, amusing.
Mary's new boyfriend is a gas man.
It was gas when the bird flew into the classroom.
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Dec 10, 2023
Gas
An aëriform fluid; - a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as oxygen, hydrogen, etc., in distinction from vapors, as steam, which become liquid on a reduction of temperature. In present usage, since all of the supposed permanent gases have been liquified by cold and pressure, the term has resumed nearly its original signification, and is applied to any substance in the elastic or aëriform state.
Shumaila Saeed
Dec 10, 2023
Gas
A complex mixture of gases, of which the most important constituents are marsh gas, olefiant gas, and hydrogen, artificially produced by the destructive distillation of gas coal, or sometimes of peat, wood, oil, resin, etc. It gives a brilliant light when burned, and is the common gas used for illuminating purposes.
Shumaila Saeed
Dec 10, 2023
Gas
Same as gasoline; - a shortened form. Also, the accelerator pedal of a motor vehicle; used in the term " step on the gas".
Shumaila Saeed
Dec 10, 2023
Gas
The accelerator pedal of a motor vehicle; used in the term " step on the gas".
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Dec 10, 2023
Gas
An exceptionally enjoyable event; a good time; as, The concert was a gas.
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Dec 10, 2023
Gas
To singe, as in a gas flame, so as to remove loose fibers; as, to gas thread.
Shumaila Saeed
Dec 10, 2023
Gas
To impregnate with gas; as, to gas lime with chlorine in the manufacture of bleaching powder.
Shumaila Saeed
Dec 10, 2023
Gas
The state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
Shumaila Saeed
Dec 10, 2023
Gas
A fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
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Dec 10, 2023
Gas
A volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
Shumaila Saeed
Dec 10, 2023
Gas
Attack with gas; subject to gas fumes;
The despot gassed the rebellious tribes
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Dec 10, 2023
Gas
A volatile fuel used in internal combustion engines.
The car's efficiency depends on the quality of the gas it uses.
Shumaila Saeed
Dec 12, 2023
Gas
A term for gasoline in American English.
She stopped at the station to get gas for her road trip.
Shumaila Saeed
Dec 12, 2023
Repeatedly Asked Queries
Why do Americans call it Gas?
Shortened from "gasoline," it's a historical linguistic evolution.
Shumaila Saeed
Dec 26, 2023
Are Gas and Petrol the same thing?
Yes, they are the same substance, just different regional terms.
Shumaila Saeed
Dec 26, 2023
Why do Britons call it Petrol?
Derived from "petroleum," it's been the term in British English for a long time.
Shumaila Saeed
Dec 26, 2023
What is Gas?
In American English, it's a term for liquid fuel used in vehicles.
Shumaila Saeed
Dec 26, 2023
What's the average price of Petrol in the UK?
Like gas, it fluctuates based on several economic factors.
Shumaila Saeed
Dec 26, 2023
Are there different types of Gas?
Yes, like regular, mid-grade, and premium, based on octane levels.
Shumaila Saeed
Dec 26, 2023
How is Petrol stored and transported?
The same way as gas, ensuring safety and environmental standards.
Shumaila Saeed
Dec 26, 2023
Is Gas only used for cars?
Primarily, but it's also used in other internal combustion engines.
Shumaila Saeed
Dec 26, 2023
Can cars running on Gas use Petrol?
Yes, they are interchangeable as they are the same substance.
Shumaila Saeed
Dec 26, 2023
Is Petrol environmentally friendly?
It's a fossil fuel, so it has environmental impacts, though greener alternatives are being developed.
Shumaila Saeed
Dec 26, 2023
Are there different types of Petrol?
Similarly, there are varieties like regular unleaded and premium unleaded.
Shumaila Saeed
Dec 26, 2023
Are there alternatives to Gas and Petrol?
Yes, like electric vehicles, biodiesel, and hydrogen fuel cells.
Shumaila Saeed
Dec 26, 2023
What's the average price of Gas in the U.S.?
It varies widely based on region and market conditions.
Shumaila Saeed
Dec 26, 2023
Does the quality of Petrol affect engine performance?
Similarly, better quality petrol can enhance engine life and efficiency.
Shumaila Saeed
Dec 26, 2023
How is Gas stored and transported?
In liquid form, via pipelines, trucks, and storage tanks.
Shumaila Saeed
Dec 26, 2023
Does the quality of Gas affect engine performance?
Yes, higher quality can improve efficiency and reduce wear.
Shumaila Saeed
Dec 26, 2023
What future does Gas and Petrol have in energy transition?
They are gradually being supplemented and replaced by cleaner, renewable energy sources.
Shumaila Saeed
Dec 26, 2023
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About Author
Written by
Shumaila SaeedShumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.
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