In Europe, automobiles are classified by grades. The reference standard for classification is basically the wheelbase (that is, the distance between the front and rear axles) ~ ~ A (the wheelbase is less than 2.6m ~ among which Grade A is further divided into A00, A0 and A), B (2.6 ~ 2.8m), C (2.7 ~ 2.9m) and D (2).

Generally, American cars are divided into six grades, which are classified after considering the size, displacement, equipment, price and other factors. They divided the cars into: Mini ~Small ~LowMed ~ intermediate ~ UPP-med ~ large/lux.

The current domestic standard has fallen behind ~ it is estimated that it will be updated soon ~

The difference between BMW 5 Series and BMW 7 Series is two different levels ~5 Series is a C-class car in Europe, just like Audi A6 and Mercedes-Benz E-class car ~ ~ while 7 Series is a D-class car, and its competitors are Audi A8 and Mercedes-Benz S-class ~ ~

As for the displacement ~ due to the current sports trend of the automobile industry ~ many levels of cars have large displacement and high performance versions ~ such as BMW 330Ci~ Although it is only a B-class car ~ it has a 3-liter engine ~ Compared with the D-class car BMW 728i, it has only a 2.8-liter engine ~

In fact, the level of the car can be seen from the manufacturer's production ~ the products of the three major luxury car manufacturers in the world can be seen ~ ~ Audi's A2~A4~A6~A8~ and BMW's MINI (and later 1 series) ~3 series ~5 series ~7 series ~ and Mercedes-Benz's A ~C ~E class S class are inextricably linked in the market ~

So the level of the car is ultimately divided according to different consumers ~ ~

Z9 is the new engine of V 12 in 2006, which should be regarded as the most expensive in the car, but we still have to remind everyone that the most expensive one in the real sense should be the BMW concept car.