If there was ever an SUV that wanted to be a sport sedan, it's the BMW X5. And now that the second-generation X5 has a 350-horsepower, 4.8-liter V-8 and revised high-tech suspension, it may be one ...

Although the engine is the same size as the previous 4.4-liter V-8, the new version includes updated variable cam timing and variable-length air-intake runners for better response. The obvious ...