If you mean "dangerous" as in "more flammable" the carbon chains that make up petrol are shorter and that makes it easier to set alight than diesel.
However, both substances contain benzene which is very toxic, incerasing the risk of cancer and other serious illnesses, so both can be considered "dangerous".
Petrol, it has a lower flash point and is more flammable than diesel
Petrol is far more comustile compared to Diesel
diesel is usually more expensive but diesel cars usually have more mpg than petrol cars
Petrol is and bit more vicous and that diesel is a lot darker than petrol. Petrol burns quicker when set alight, however diesel burns more brightly!
diesel is more expensive
How many petrol diesel...What? More information is needed.
diesel is more efficient
petrol has a lower flash point and is more volatile than diesel.
because petrol is easer to burn than diesel
The difference is that diesel is more oily than petrol, and is cheaper to produce.
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.
Produce more petrol than diesel. :P