This is the all-new BMW M3 CS. It takes all of the best bits of the M3 Competition Package and adds power, increases grip and trims the weight - all in the name of a more exciting drive. Here's. Here's a first look at the 2018 BMW M3 CS, the most hardcore M3 yet. The M3's S55 inline-6 cylinder engine is uprated to 453 hp (compared to the standard M3's 425 hp and the competition pack's. More at: The all-new BMW M3 CS is the most powerful standard production vehicle of all time in the M3 model series. Best time of 7 minutes, 38 seconds on the legendary.