BMW M4

Report: BMW M4 CSL is happening, will have 540 HP, rear-wheel drive

Video: BMW M4 Competition hops on dyno and scale

Video: BMW M4 Competition hops on dyno and scale

As usual, when BMW launches a new car, people want to see just how the real-life results measure up to the claims made by the manufacturer. Most German manufacturers underrate their power figures, leading to…