BMW X4: BMW has a new competitor in the red-hot small SUV segment. The X4, dubbed a "sports activity coupe," sits slightly longer and lower than its sister vehicle, the X3, and has a slanted, coupe-like roof. New features include a standard power tailgate that lifts if the driver waves a foot under it. The X4, which goes on sale this spring, starts at $45,625 for the xDrive28i, which has a 2.0-liter, 240-horsepower four-cylinder engine. The top-of-the-line xDrive35i starts at $48,925 and has a 3.0-liter, 300-horsepower V6. Both models have an eight-speed transmission and all-wheel-drive.