Best Alternate Fuels to the Petrol and Diesel
                     BEST ALTERNATE FUELS TO 
THE PETROL AND DIESEL
Introduction
Alternative fuels for automobiles are currently a topic of 
growing interest and importance. 
An alternative fuel vehicle may be defined as a vehicle 
that is powered by any fuel other than the conventional 
petroleum fuels (diesel or petrol). 
Source: www.cleverism.com 2
Biofuel
Biofuels such as bioethanol (which can be used instead 
of petrol), are made from corn and sugarcane, whereas 
biodiesel is made from vegetable oils and animal fats.
Both replace non-renewable crude oil-derived fuels.
Source: www.rac.co.uk 3
Electricity
Electric cars have been around a while but so far have 
struggled to enter the mass market. Many hybrid 
vehicles now use electricity to reduce fuel consumption 
and thus reduce fuel costs. 
Source: www.weforum.org 4
Ethanol
Ethanol is an alcoholic renewable that is made of the 
same kind of alcohol you find in alcoholic beverages. 
Ethanol is then mixed in various degrees with traditional 
petrol. The production and use of ethanol could reduce 
greenhouse gas emissions anywhere between 52 and 86 
percent.
Source: www.weforum.org 5
Hydrogen
Hydrogen has virtually no greenhouse gas emissions. 
Power is generated in a hydrogen fuel cell, which will 
only emit water vapor and warm air. 
The difficulty is that hydrogen fuel must be extracted 
from water, hydrocarbons or other organic matter.
Source: www.weforum.org 6
Natural Gas
Natural Gas is already widely used for a number of 
purposes around the world. It is an odorless mixture of 
hydrocarbons, most of which are methane. 
Natural gas is considered a fossil fuel, but an alternative 
known as renewable natural gas does exist. 
Source: www.weforum.org 7
Propane
Propane, or liquefied petroleum gas, is clean-burning 
and high-energy, making it a tempting alternative. 
Propane vehicles are typically more expensive than 
those running on petrol, though inversely propane is 
often cheaper than petrol.
Source: www.weforum.org 8
Steam
Steam cars have been around since the 19th century 
and were replaced by models with internal combustion 
engines. Some say they could now repay the favour.
Source: www.rac.co.uk 9
Heat
Two-thirds of the energy generated by petrol or diesel is 
wasted as heat.
Thermoelectric technology, which converts heat into 
electricity, can help reduce this and is already under 
development by several car makers.
Source: www.rac.co.uk 10
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