Audi A8 vs BMW M5
What's the difference?

Audi A8

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2023 price

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BMW M5

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2025 price

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Maserati Quattroporte

Mazda 6

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 E53

Mercedes-Benz EQS

Mercedes-Benz S-Class

Summary

2023 Audi A8

2025 BMW M5

By James Cleary

By John Law

Safety Rating

Engine Type

Diesel Turbo V6, 3.0L

Bi Turbo V8, 4.4L

Fuel Type

Diesel/Electric

Premium Unleaded/Electric

Fuel Efficiency

5.9L/100km (combined)

3.0L/100km (combined)

Energy consumption

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Electric range

67 km

Battery capacity

22.10 kWh

Seating

Likes

Refinement
Quality
Value

Stunning speed
Drive mode customisation
Impressive agility

Dislikes

Big turning circle
No folding rear seat
No front door bottle slots

Awkward boot
Brake and steering feel
Low on hooliganism

2023 Audi A8 Summary

Audi’s flagship is the A8, a long, luxurious sedan where being driven is often as important as doing the driving.

To put this ultra-premium machine in context, it competes with other German heavyweights like BMW’s 7 Series and, of course, the Mercedes-Benz S-Class as well as Porsche’s Panamera. Not to mention the Lexus LS or Maserati’s Quattroporte.

What’s life like at the top of the Audi pyramid? Stay with us to find out.

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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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Deep dive comparison

2023 Audi A8 2025 BMW M5

Verdict

The Audi A8 swims in a luxury car shark tank where those paying the big dollars expect top-shelf everything. It delivers a serene driving experience whether you’re in the front or the back, in a superbly engineered and executed luxury sedan package. Not perfect, but very, very impressive.

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.

Audi A8 vs BMW M5 What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Audi A8 vs BMW M5
What's the difference?