Why is a petrol better than a diesel car

Fumes from a autocar

The issues with fuel

At the beginning, I must say that my mum is driving a diesel car and I am a bit ashamed, because diesel is not the clearest fuel in the world. Of course, it depends at first, from which petrol station you get your diesel from. Like the Jet station or the Roth one, some of them sell unclean petrol or diesel. So, that the mixture does not fit with the regulations from the European union. Or they get rid of old, -unclean, -dirty petrol rather than diesel. And of course, this fuel is cheap, cheaper than getting good fuel from OMV or bp, where you could be sure that your fuel is more clean. But if you filling in old or dirty diesel rather than petrol your emissions are higher rated and your particle filter suffers from this, so maybe it blocks up the fuel and your engine stops. To mend those issues, you need more money to fix it than to buy a high-quality propellant. I can understand, if your car or rather your engine is thirsty, the fuel should be quite cheap. But think on the health of your car and the health of your lungs.  

Money money money

The next point is of course the money. Money is a very important point on this comparison. Diesel is cheaper than Petrol but it´s more difficult to inflame, so the piston gets less power for more horses. The point is of course that diesel needs less fuel but more power from the batteries. We must see it in this way: All parts from the diesel engines are more expensive, for example the engine needs more power to fire it up because of the diesel; its, as I said, less flammable and that’s the reason it needs glow plugs. Glow plugs are for diesel engines and if you have a cold engine you need a big amount of electricity for the preheat. It is heating up until 55-75 degrees. Diesel is only flammable when the glow plug is in that temperature that the diesel can vaporize. This steam is now flammable plus the diesel which had not vaporized yet in the inside of the cylinder. So, a Diesel engines has got less rounds per minute and it´s not as thirsty as a Petrol car because the vaporized diesel do not need a big amount of fuel to fire up. So, the alternator must be more powerful and the battery bigger. All in all, is diesel cheaper than petrol but it´s “producing” a big amount of bad emissions and your lungs suffer from this.