After all, the difference sometimes reaches 7500 - 15 000 USD! What is the reason? Let's look into it.
On the one hand, everything is very strange, because the diesel is relatively badly updated, the old technologies of 20 years ago are used in the building (a large number of manufacturers). No, I'm not saying it's all there, but most of the time it is.
I would also like to note that now it is mainly a TURBODIESEL and to compare it with turbocharged cars, and not with ordinary ATMO.
But despite all this, the price tag is often just over the top! I have an explanation for this, which consists of 4 points ...
POINT 1 - Didn't make it easy
Diesel engines are built mainly on old technologies, on the one hand, it may seem bad, but on the other hand, it is very good.
Gasoline units are constantly being lightened, cylinder blocks, pistons, rings (oil removable and compression), connecting rods, crankshafts, necks, etc.
Diesel engines often lack all this - cast iron blocks, connecting rods, pistons, rings, crankshafts - all of which are massive and designed for high resources and pressure.
You see, what kind of thing, if you make a diesel engine with a thin block, that is, it will just tear from the high pressure inside.
That's why even now diesel engines can walk for a long time, even 500 000 km can.
Although for the sake of fairness, it is worth noting that diesel units with aluminum blocks began to appear, which certainly does not add a resource.
PUNKT 2 - Fuel equipment
In gasoline engines, injection is based on two main technologies: MPI or GDI.
There are three types of injection:
Simultaneous. Previously, in the 70s and 80s, nobody cared about the price of gasoline (it was cheap), and nobody thought about the environment. That's why fuel injection into all cylinders at once, with one rotation of the crankshaft. It wasn't very practical, because usually (in a 4-cylinder engine) - two pistons work on compression, and the other two drains the exhaust gases. And if you supply gasoline to all "pots" at once, the other two will simply throw it into the silencer. Extremely expensive for gasoline and very harmful for the environment.
Pair-parallel. This kind of distribution injection, as you probably already guessed, took place in two cylinders in turn. That is, the fuel came exactly where it is now being compressed.
Phased type. This is the most perfect method at the moment, here each nozzle lives "its own life" and is controlled separately. It delivers gasoline just before the intake stroke. The mixture is saved as much as possible here, and the environmental component is high.
GDI has a high-pressure fuel pump, and there are also injectors, but they are not standing next to the diesel fuel pump (high-pressure fuel pump) and its injectors. They work under very high pressure and all the equipment is much more complicated and expensive.
By the way, many modern diesel engines use the Common Rail system.
As you understand, it adds to the cost of the car, and significantly.
PUNCH 3 - Suspension
Heavy fuel ICE weighs about 40 - 50% more than a similar gasoline engine. Again, due to old technologies in the building (cast iron in the block, more pistons, etc.).
Accordingly, it is necessary to correctly calculate the front suspension, namely, to install reinforced shock absorbers, springs, silent blocks, ball, steering, levers, etc. As you have understood the cost here is much more expensive, which gives a plus in the price of a car.
PUNCH 4 - automatic transmission
Well and last, but perhaps the most important reason why a diesel engine is more expensive, is an automatic transmission (automatic or variable speed gearbox - not important).
A simple example is KIA OPTIMA (maximum) or KIA STINGER (minimum), both have a turbo gasoline unit, usually 2.0 liters (247 hp) (353 Nm - torque).
The diesel that goes to KIA SORENTO PRIME has a volume of 2.2 liters (200 hp), but it has a torque of 441 Nm, which is almost 100 Nm more! For this car, you need another automatic transmission, more powerful (which will digest such a moment), and more expensive. If you put it from OPTIMA or STINGER, it will simply "roll-up" (break the shafts), it should be understood.
It is all these points that give a big price to the diesel version of this or that brand, I think, put everything on my fingers.
