Carbon fiber is good? it is good. Good things should not be expensive? The. Costs of about 16 euros per kilogram of carbon fiber, while the same ordinary steel is less than 1 euro. Therefore, in the face of profit, BMW also had to be defeated.
BMW's latest release in the main models of the BMW 5 Series, no longer use carbon fiber as the main component, mainly because the cost is too high, squeezing the profit margins. Instead, it is cheaper and lighter materials, such as aluminum and steel. In the more high-end models BMW 7 Series, only part of the parts using carbon fiber.

In the introduction of electric cars BMW i3 and plug-in hybrids BMW i8, in order to reduce body weight, in order to achieve the purpose of a longer life, the BMW body in the two large-scale use of carbon fiber. The latest analysis, said BMW i3 poor sales part of the reason, it is because the excessive use of carbon fiber, making the vehicle too expensive. With the opponent Tesla Moldel 3 price of $ 35,000 compared to the current price of BMW i3 45,000 euros.
In the plan to expand the electric version of the Mini and BMW X3 production, the BMW CEO directly denied the carbon fiber in small cars on the proposal, the reason is that the cost is too high, not competitive.