BMW M5 vs Subaru Liberty
What's the difference?

BMW M5

—

2025 price

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Subaru Liberty

$9,990 - $22,990

2018 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

2018 Subaru Liberty

By John Law

By Peter Anderson

Safety Rating

Engine Type

Bi Turbo V8, 4.4L

Inline 4, 2.5L

Fuel Type

Premium Unleaded/Electric

Unleaded Petrol

Fuel Efficiency

3.0L/100km (combined)

7.3L/100km (combined)

Energy consumption

—

Electric range

67 km

Battery capacity

22.10 kWh

Seating

Likes

Stunning speed
Drive mode customisation
Impressive agility

Roomy interior
Apple CarPlay and Android Auto
Well-equipped

Dislikes

Awkward boot
Brake and steering feel
Low on hooliganism

Hoplessly grainy reversing camera
Run-of-the-mill warranty and steep servicing
No parking sensors

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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2018 Subaru Liberty Summary

Subaru's Liberty is probably one of the most recognised badges in the country. Talk to anyone outside of Australia, though, and unless they know their cars, they haven't the faintest idea what you're talking about. It's a mark of Subaru's respect of the Australian market - the company renamed it from Legacy for local consumption - and the power of a brand that's approaching 30 years old.

Just about every Australian reading these words has been in a Liberty of one age or another. Some even remember it for Colin McRae's heroics at the wheel of the blue-and-yellow machine in the early '90s before the switch to another famous Subaru, the Impreza.

The Liberty is now well into its sixth iteration which means time for a mid-life nip and tuck. Subaru has worked above and below the skin to breathe a bit of life into its mainstay sedan.

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Deep dive comparison

2025 BMW M5 2018 Subaru Liberty

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

The Liberty has a lot going for it - a great reputation for reliability, it isn't terribly priced (although servicing is a little steep) and has that signature all-wheel drive. While I've complained about the ride and handling, apart from STi and RS-badged versions, that has never been the Liberty's strong suit.

While it might be a shrinking part of the market - and Subaru is a founding architect of the modern SUV cult - Subaru and its competitors still care. The Liberty, like Forester and Outback, remains a stand-out in the sector with a boxer 2.5 and all-wheel drive. Sometimes that kind of individuality is enough.

BMW M5 vs Subaru Liberty What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

BMW M5 vs Subaru Liberty
What's the difference?