BMW is producing some incredible engines at the moment. You want fuel efficiency without sacrificing economy? No problem.

The M Performance TwinPower Turbo engine is a great example, as this video shows. It delivers 381hp and 44.8mpg; supercar performance and supermini economy in one incredible package.

Those figures apply to the M550d xDrive. We’d love to see that model in our Elms BMW showrooms, but unfortunately it’s not being sold in the UK. Still, the 535d has 313hp and achieves 52.3mpg, so we’re not missing out too much…