It’s time for an all-diesel showdown! When it comes to performance you don’t often think diesel, but these three contenders are looking to change your mind! First up is Mat in the BMW, with a 3-litre straight-six that produces 320hp. The Mercedes has the same size engine, although it's up on power, putting down 340hp! Meanwhile, the Audi has a 3-litre V6 engine that can only put down 286hp! So the only question left is, which will be first to the checkered flag - the BMW, Mercedes or Audi? Let us know who your money’s on in the comments below!Instagram – Facebook – Twitter – Refer A Friend – 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 – Oder auch in Deutschland Geld beim Autokauf sparen –