Essentially a carbon copy of the X5, but with a more streamlined exterior, the 2019 BMW X6 is built on the last-generation X5. BMW is already working on a new generation, but it won't be ready for the 2019 model year. As a result, the X6 is temporarily distancing itself from its twin brother. The xDrive35i and xDrive50i versions are back with six- and eight-cylinder engines, respectively. The X6 M also remains in the picture with its powerful 567-horsepower V8.