Mercedes-Benz A45 vs Infiniti Q30

What's the difference?

Driving the first-generation Mercedes-AMG A 45 in 2013 was an intense, noisy, brutal experience and I loved every bone-shaking, ear-bleeding moment of it.

But I’m older now, married and have children, and while this is also an intense, noisy, brutal experience I now prefer cars to be less like a 24-hour, seven-day-a-week continuous cage fight. So, I was surprised to find the new-generation A45 S has grown up a bit, too.

So, like me, is the new Mercedes-AMG A 45 S 4Matic+ not as quick as it used to be, and does it have a dad bod, now, too? Far from it. If anything, it’s matured into the serious weapon of a hot hatch it was always supposed to be.

Welcome to the future - where your Mercedes-Benz is a Nissan and your Nissan is a Mercedes-Benz. 

Lost already? Let me catch you up. Infiniti is the premium arm of Nissan, in much the same way Lexus is the premium arm of Toyota, and the Q30 is Infiniti’s hatchback. 

Thanks to the state of various global manufacturing alliances the Q30 is mechanically, largely a previous-generation Mercedes-Benz A-Class, with a similar arrangement seeing the new Mercedes-Benz X-Class ute comprised largely of Nissan Navara underpinnings.

Recently, the Q30 has had its range of variants trimmed from a confusing five down to two, and the one we’re testing here is the top-spec Sport.

Make sense? I hope so. The Q30 Sport joined me on an 800km trip along the east coast in the height of summer. So, can it make the most of its German/Japanese roots? Read on to find out.