Mercedes-Benz C300 vs Mercedes-Benz CLA250

What's the difference?

Australia's relationship status with the Mercedes C-Class has long been… complicated.

Over 40 years and five generations, the German midsized luxury sedan has been a paragon of efficiency and safety on one hand, but on the other, well, the quality and ride comfort haven't lived up to brand expectations.

Now the completely redesigned version has landed in Australia, with shrunken S-Class limousine styling to take on not only the BMW 3 Series, Audi A4 and Genesis G70, but rivals as disparate as the Hyundai Ioniq 5 and Tesla Model 3.

The question is? Is this latest, sixth-generation, new-from-the-ground-up C-Class good enough to take on all those and more? Let's find out.

If you're after a hot hatch with a boot, you can't have one because it wouldn't be a hatch anymore.

What you can have is this little beast - the new, second-generation Mercedes-AMG CLA 45 S, a small coupe-style sedan sharing its high-performance DNA with the hot as bubbling lava A 45 S hatch.

Packing 300kW – that's just over 420hp – and 500Nm its 2.0-litre engine is claimed to be the most powerful series production turbo four ever made.

And Australian deliveries are scheduled for early 2020, with a likely price tag in the mid-$90k bracket.

Mercedes-AMG invited us to the car's global launch in Madrid, Spain, where we got behind the wheel on road and track.