All videos for the BMW 3er-Reihe 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..This BMW 3er-Reihe G20/G21/G80 320i Touring Sport Line Steptronic costs new 54650 €. From 0 to 100 km/h it accelerates in :car_offers-model-tech_spec-electric_engine-acceleration_0_100 seconds . His top speed is 230 km/h.