2019 Winner: BMW X5 3.0L (B58) Turbocharged DOHC I-6 Wards 10 Best Engines This engine’s so good, BMW expects 90% of X5 volume in the U.S. to carry the improved B58. It strikes the ideal balance between power and efficiency, propelling the generously proportioned X5 to 62 mph in 5.5 seconds. Read More |