Chas Hallett.:Why don't you take a deep breath and go and read the story? Unless I'm going completely mad I can't see any reference to a 286bhp diesel in the 7-series. p.s do you actually like anything?
from original article:
"The big seller will be the 730d, powered by a twin-turbo version of BMW’s 3.0-litre six cylinder diesel engine, producting 242bhp..." Autocar.
"...a twin-turbo version..."
That is wrong. It is single-turbo - the same brand-new engine in the 330d, not the existing twin-turbo in the 335d . Hence airgith76's comment over a possible typo.
Before you jump down someone's neck for pointing out a blatant mistake in your magazine's writings make sure you read the article first, the subsequent comments and properly understand them! Have the grace to correct it and move on, that's all.