All videos for the BMW Z4 with driving report, buying advice, long term test and 0-100km/h acceleration test. These facts you should know before you buy or lease the car..The BMW Z4 G29 Roadster M40i Steptronic Sport has a gross list price of 72849 €. From 0 to 100 km/h it accelerates in :car_offers-model-tech_spec-electric_engine-acceleration_0_100 seconds . His top speed is 250 km/h.