Mercedes-Benz S 420 CDI
Mercedes-Benz put on sale a version of the S-Class with a diesel-engined eight-cylinder 4.0 litre engine capacity and maximum power of 320 hp, is the engine of the E 420 CDI.
There are many models on the market of similar characteristics to S 420 CDI. With a size and maximum power are like the Audi A8 4.2 TDI and the Volkswagen Phaeton V10 TDI. As can be seen in the data sheet comparison, the Audi is the one with better relationship between consumption and benefits, spends the same as the Mercedes-Benz but is faster. The Volkswagen, which weighs 2,454 kg, is the worst in benefits and consumption.
In the card’s comparative price and equipment can also see that the Mercedes-Benz is in an intermediate position between the Audi and Volkswagen. The A8 costs less and takes some series of elements that are optional on the S 420 CDI (xenon headlamps or charger discs, for example).
Mercedes-Benz S 420 CDI
The Phaeton is the most expensive of the three, partly because it has more standard equipment, some of the elements that have serial and are optional in the other two are the seats with massage function, the leather upholstery or Metallic paint (which costs € 1,245 in the A8 and € 1,345 in the S 420 CDI).
The S 420 CDI is available with the two bodies of the Class S (regular or elongated), only to pull back (no 4Matic version) and the automatic transmission speeds of seven forwards (and two backwards). In the test of S 500 there on the Class S ratings that are applicable to the S 420 CDI (except those of the dynamic qualities), such as night vision system or the programmer speed active.
The engine bearing the S 420 CDI is similar to the E 420 CDI. It is an eight-cylinder with two turbocharger feeding through common. As the angle of the cylinder is 75 º instead of 90 degrees, you need a balance shaft to keep the vibrations below a certain threshold.
This engine gives high values of maximum power and maximum torque, compared with its engine capacity. His actual average pressure is very high: 22.9 bar (19.7 in the engine of A8 and 19.1 in the Phaeton) and surge pressure reaches 175 bar. In the first information on the range there is a description of the mechanical elements characteristic of Class S.
