Audi Q3 vs Mercedes-Benz AMG GT

What's the difference?

Replacing a popular model is fraught with danger. Existing customers will tell you they love it, while focus groups of non-customers will tell you why they hate it and sometimes carmakers get caught trying to appease both groups.

Sometimes they’ll make it too big or change too much in the search for more sales and ultimately end up removing the elements that made it popular in the first place.

Which is why Audi has been extra careful with some subtle evolution for this new-generation Q3 SUV and Sportback. This isn’t just a popular model for Audi Australia, it has been the best-selling model for the German brand for more than five years, so getting it wrong would be a disaster.

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.