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It depends on the age of the car. Since 2006, diesel cars are cleaner than gas cars due to federally required smog control equipment and the introduction of the TDI engine. Also, diesel engines emit soot, or heavy particulate matter, like black smoke, that is now nearly 98% removed by control equipment. While gas cars emit hydro carbons, NOX and other chemicals that aren't quite cleaned yet. Diesel engines have been tuned to burn fuel more efficiently than before, thereby producing less pollution, while gas engines rely on after combustion equipment to remove the pollutants.
What else can I help you with?
What is the difference between a Normal diesel and Performance diesel?
The difference between the two is quit small. Normal diesel contains less oil than performance diesel. However, when they are tested side by side, no one can tell the difference of the two.
Are diesel engines more polluted than steam engines?
Of an individual diesel engine and an individual steam engine of the same energy output the diesel engine would be less polluting. It is far more efficient. However, there are far more diesel engines than steam engines in the world today so overall diesel engines pollute more than steam engines.
Why are solar energy cars better than normal cars?
they don't pollute the air
Why diesel gives more milage than petrol and petrol car costly than diesel?
Diesel engines are more efficient and do use less fuel, but they do not cost less than a petrol engine, they cost more. Diesel fuel also costs more. A diesel engine will however last longer.
Why is diesel cheaper than petrol?
cost of refining the crude oil ofcourse... In the UK diesel is more expensive than normal unleaded petrol.
Why does diesel float on water?
Diesel is less dense than water, which causes it to float on the surface. This is because diesel is a hydrocarbon-based liquid that is lighter than water, causing it to be less likely to mix or sink when in contact with water.
What are the advantages in petrol engine?
Cheaper to built and therefore cheaper for the consumer to buy than a diesel. Fuel costs less than diesel.
What are two disadvantages of using biodiesel rather than normal diesel?
its renewable
What are the disadvantages of using biodiesel rather than normal diesel?
it is more expensive
Why is biodiesel less harmful to the environment?
It breaks down 5 times quicker than 'normal diesel and it burns much more cleanly producing very little sulphur dioxide.
Can you use bio-diesel in diesel tractors?
Yes it can. Biodiesel can be used in any diesel engine, but it isn't usually used for tractors because it has a lesser energy yield than normal diesel.
Why does diesel cost more than gas?
It's a supply and demand issue. Demand for gasoline is much greater than that for Diesel. Therefore, the supply of Diesel is less which drives up the price.
