BMW M5 vs Mazda 6
What's the difference?

BMW M5

—

2025 price

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Mazda 6

$20,850 - $41,995

2023 price

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Maserati Quattroporte

Mazda 6

McLaren Artura

Mercedes-AMG E63

Mercedes-Benz A-Class

Mercedes-Benz A35

Mercedes-Benz AMG GT

Mercedes-Benz C-Class

Mercedes-Benz C43

Mercedes-Benz C63

Mercedes-Benz CLA

Mercedes-Benz CLA-Class

Mercedes-Benz CLS-Class

Mercedes-Benz E-Class

Mercedes-Benz S-Class

Summary

2025 BMW M5

2023 Mazda 6

By John Law

By Emily Agar

Safety Rating

Engine Type

Bi Turbo V8, 4.4L

Turbo 4, 2.5L

Fuel Type

Premium Unleaded/Electric

Unleaded Petrol

Fuel Efficiency

3.0L/100km (combined)

7.6L/100km (combined)

Energy consumption

—

Electric range

67 km

Battery capacity

22.10 kWh

Seating

Likes

Stunning speed
Drive mode customisation
Impressive agility

Interior trims feel plush
Smooth and sporty handling
Solid luxury features

Dislikes

Awkward boot
Brake and steering feel
Low on hooliganism

Leaning more towards old than retro inside
A bit thirsty
Terrible reversing camera

2025 BMW M5 Summary

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?

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2023 Mazda 6 Summary

Has it really been 20 years since the humble Mazda6 station wagon hit our roads? You betcha, but I was more shocked that I remembered when it did!

I have a sudden flashback of questionable fashion choices, glittery butterfly hair clips and how Skipper was making a play at being the coolest 'Barbie' (she wasn't).

I've always had a soft spot for wagons, they are the forgotten heroes for family hauling. It's hard not to glide over them when the market is dominated by SUVs but if you happen to remember they still exist (albeit, barely) you might remember why they were popular back in the day.

Being a 20th Anniversary Edition means there are some nods to the past in this model but unlike the low-slung jeans of my youth, they're stylishly done. With some luxuriously-appointed rivals to contend with, like the Skoda Octavia and Volkswagen Passat, does it offer enough to be considered by a modern family?

My little family of three has been in it all week to find out for you!

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Deep dive comparison

2025 BMW M5 2023 Mazda 6

Verdict

Let’s get one thing out of the way: the new M5 is a very good car. Considering the emissions limitations and size increase of its base model, it is an impressive bit of engineering.

What’s trickier is deciding whether the new car is really better to drive. Less edgy but supremely comfortable and quiet; BMW leaned into the daily usability of the plug-in hybrid M5 rather than amping the petrol-electric system for maximum thrills. And do you know what? That’s fine with me.

The new M5 still performs on road and track and does an incredible job of hiding its weight (most of the time). Perhaps the G90 is a little more Audi RS6 than F90 in its demeanour but some would argue that’s no bad thing.

The concept of the BMW M5 is not static, it evolves with the times, and the G90 is no exception. Expect future Competition and CS variants to unlock some extra lunacy.

Note: CarsGuide attended this event as a guest of the manufacturer, with meals provided.

Verdict

So, what did my family think about the Mazda6 20th Anniversary wagon? Firstly, I like that it drives well and how many luxe features are up front. The trims and body paint look divine but there's a disconnect with family practicality in the back seat. Besides the multimedia system, which 100 per cent needs to be improved, I don't mind the retro-feeling elements in the cockpit but my husband's first comment was that it looked old.

It may be better suited to a smaller and older family that isn't carting around a stack of gear but you get a lot of features for your cash in this model. So, this gets a 7.0/10 from me.

My son didn't spend heaps of time in this one but he liked the colour of it and the seats. He gives it a 7.0/10.

BMW M5 vs Mazda 6 What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

BMW M5 vs Mazda 6
What's the difference?