It's time for Mat to swap his BMW 840d for... an all-new M850i!

The question is, will the petrol version of the new high-performance 8 Series prove oh-so-much better than the diesel version? Well, there's only one way to find out... By driving all the way to the south of France in his 840d to swap the cars himself!

Stick with Mat for his latest long-term test car review as he puts the M850i's glorious 4.4-litre twin-turbo V8 to the test on his journey back to the UK!

......................................................................................................

Instagram –   / carwowcars  

Facebook –   / carwowuk  

Twitter –   / carwowuk  

Awkward haggling is a thing of the past with carwow. Choose your perfect car with our configurator tool and let the country’s best dealers compete over you. Compare the five best offers by price, location and dealer ratings and choose the one that’s right for you – no hassle, no haggling, just a great deal.

Visit our site to save money on your new car – http://bit.ly/carwow-UK

Oder auch in Deutschland Geld beim Autokauf sparen – http://bit.ly/carwow-DE