The X-Series is a real success for BMW. For example the new X5 was sold out in Germany a month before it really went on sale and the X3 is selling very well, despite its high price. The X6 launched in December turned out to be a real success among the press. This is a very good reason for BMW to start working on a more compact version of the X-Series. It will be called X4 and like the X6 was inspired by X5, it will be based on the X3.
The X4 will be a pure road car, with sporty design elements: it will feature narrow roof pillars and frameless windows. It is expected to be around 10 cm thinner than the X3 and also 5 cm shorter.
