Hi Richard, as far as I was aware the engines are now 178PS for the 2.0 petrol, my dealer wasn’t aware of this when I asked him. the November 2021 brochure I had definetely shows the output as 178PS and not 192PS that showed in the April 2020 brochure. BMW genius confirmed this to me before I took delivery on the 1st March. (enquired to see if I would be getting the 2021 model). The emissions is now lower on the new engine, 0-62 now 7.3 as opposed to 7.4 for the 192PS engine.
Model, 0-62, Combined MPG, Combined MPG l/100km, Combined emissions
xDrive20i xLine 192 (7.4) (37.2-38.2) (7.6-7.4) (172-167)
xDrive20i xLine 178 (7.3) (39.2-40.4) (7.3-7.0) (165-160)