What’s faster, 135i or 140i?
The differences between the M135i and M140i models in terms of performance are minimal, because they’re both a lot faster than any regular car. Verdict. The BMW M135i xDrive is one of the most well-rounded daily driver performance cars out there. Effortless speed and genuine practicality come together to create a highly versatile package.The differences between the M135i and M140i models in terms of performance are minimal, because they’re both a lot faster than any regular car.