The new 2025 BMW 4-series is coming closer to a reality, and BMW has divulged more details closer to its launch this March. The most important bit of information is the introduction of a 48-volt mild hybrid system on both the four-cylinder and inline-six powered models.  BMW says that the 48-volt system allows the car to be a little more responsive and efficient, as well as boosting the horsepower slightly. The 2-liter four cylinder engines in 430i models generate
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