BMW G14, F91 2019- 3.0 840i 340bhp / 250kw Petrol Convertible. BMW G14, F91 2018-2020 3.0 840d 320bhp / 235kw Diesel Convertible. BMW G14, F91 2020- 3.0 840d 340bhp / 250kw Hybrid Convertible. BMW G16, F93 2019-2020 3.0 840d 320bhp / 235kw Diesel Gran.