The 2020 BMW Z4 is a third-generation, two-door sports roadster with a near 50/50 weight distribution. It has a more angular appearance than its predecessors and more power to boot. It is powered by a standard 255-hp, turbocharged 2.0-liter four-cylinder engine mated to an eight-speed sport automatic transmission and rear-wheel drive. The soft-top closes in ten seconds at speeds up to 31 mph.