Holden Calais vs BMW M5

What's the difference?

If Holden had a dollar for every time someone had criticised the new and international flavour of Australia’s formerly home-grown hero, it would surely have more than enough spare cash to blow the dust of that vast South Australian factory and restart local Commodore production immediately.

Hell, there’d probably be enough left over to relaunch the Camira while they were at it. And maybe even knock out a new Gemini or two.

So we’re not going to do that again here. The all-new Commodore, in this case the Calais Tourer, is now here - granted having travelled further than the one it replaces - and so we’ll be playing this review with the straightest of bats.

Because the truth is, if you peel the badging - and thus the swirling emotion - off its elongated rump, then you’ll find this German-built Tourer is, really and truly, a very good thing.

Balancing luxury car comfort, hot hatch agility and supercar speed is no easy task, yet that is what made the six previous generations of BMW's M5 so iconic. 

In seventh-generation ‘G90’ guise, the M5 has another skeleton in the cupboard: the toughest emissions regulations that Europe, and now Australia, have ever seen.

A twin-turbo V8 was untenable and going battery electric was not an option. Plug-in hybrid was the only answer. For the new M5, BMW combined a revised 4.4-litre ‘S68’ bent eight with a punchy electric motor for 535kW and 1000Nm. 

Problem is, the G90 is widely acknowledged as one of the greatest BMW M cars of all time, especially in CS trim. And thanks to a circa-600kg weight hike to nearly 2500kg, the new M5's 0-100km/h claim is actually slower than the old 'F90' M5. 

Doesn’t exactly sound like a big leap forward, does it?

A drive through the Central West of NSW and around the iconic Mount Panorama racing circuit gave us answers to two questions. Does the M5 work on Australia roads, and does BMW M's latest super-sedan represent progress?