Used 2019 BMW Z4 Convertible Trims Comparison

The sDrive 30i is powered by a 2.0-liter turbocharged four-cylinder engine (255 horsepower, 295 lb-ft of torque). An eight-speed automatic is the only transmission offered and drives the rear wheels. The sDrive M40i steps up to a 3.0-liter turbocharged six-cylinder (382 hp, 369 lb-ft).

Standard sDrive30i features include 18-inch wheels with performance run-flat tires, automatic LED headlights, auto-dimming driver-side and rearview mirrors, rain-sensing wipers, a black fabric folding roof, a wind deflector, keyless ignition, selectable drive modes and cruise control.

On the inside, you get automatic climate control, a virtual instrument panel, 14-way power sport seats with memory functions, SensaTec simulated-leather upholstery, a center trunk pass-through, interior ambient lighting, a 10.25-inch touchscreen, BMW's iDrive infotainment system, emergency telematics and remote control via smartphone app, a rearview camera, voice control, a navigation system, Bluetooth, Apple CarPlay, two USB ports, HD radio, and 20 GB of multimedia storage. Advanced safety features include frontal collision warning/mitigation and a traffic sign reader.

The sDrive 30i is eligible for the Convenience package (smartphone key integration, an automated parking system, additional lumbar adjustments, satellite radio, and rear cross-traffic alert) plus a dark gray fabric top, leather upholstery, an automated parking system and adaptive cruise control.

Other bundled options include the Driving Assistance package (blind-spot monitoring and lane departure warning); the Premium package (heated seats, a wireless charging pad, a Wi-Fi hotspot and a head-up display); and the Executive package (premium leather upholstery, adaptive headlights, automatic high beams, and a 12-speaker Harman Kardon surround-sound system).