Modern research states that if you are owning a diesel car expecting to save some money in the bargain, you are doing a great disservice to the country. You are polluting the environment four times more (4x) than a petrol car and doing a great disservice to your society and surroundings.
|Ships too need to control their pollution|
Contrasting with earlier reports which found CO and CO2 to be detrimental to human health, recent research points to NOx emissions which are the main culprit in deaths related to automobile emissions.
Click on this Guardian newspaper link to read of how almost 38,000 people across the world (mainly from China, Europe and India) die every year to diesel pollution (or diesel vehicles failing to meet pollution regulation standards). These studies also point to the fact that excess NOx (having escaped regulators' lenses) will still be responsible for about 70,000 deaths annually by 2040 AD.
Another link stressing on airquality is here ..
A BBC report on Diesel vehicles and their emissions
Studies point that For unit pollution, every diesel-km is equivalent to four petrol-km.