Mercedes-Benz AMG GT vs BMW 320d

What's the difference?

Once upon a time, people would dream about owning a Mercedes-Benz 450SLC – the C107 sports/luxury coupe flagship of the 1970s.

Sexy, stylish, secure and incredibly solid, it embodied the brand’s ‘Engineered Like No Other Car' mantra of the era.

Today’s all-new, second-generation, C192 AMG GT Coupe is something of an indirect descendant of this sort of thinking, changing tack from its supercar-esque 2014 C190 predecessor, with more space, more seats, more sensibility and, conversely, even more steak and sizzle from its glorious V8.

A modern-day SLC? The Porsche 911, Aston Martin DB12, Maserati GranTurismo and Bentley Continental GT’s worst nightmare? Or something else entirely?

These questions and more are answered below.

Over 44 years BMW has produced more than 15 million examples of the 3 Series. That's roughly one every minute and a half... for over four decades.

And the latest, seventh-generation version of what the famous German maker defines as the "heart and soul" of its brand has landed in Australia.

The new '3' is longer and wider. It's also claimed to be slicker aerodynamically, up to 55 kilos lighter, more fuel efficient, and faster.

And it'll need every advantage it can muster to take a chunk out of its arch rival, the all-conquering Mercedes-Benz C-Class.