Audi Q3 vs Mercedes-Benz GLC-Class
What's the difference?

Audi Q3

$58,700 - $84,327

2026 price

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Mercedes-Benz GLC-Class

$63,419 - $183,541

2025 price

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Land Rover Discovery Sport

Mercedes-Benz G-Class

Mercedes-Benz G63

Mercedes-Benz GLA-Class

Mercedes-Benz GLB-Class

Mercedes-Benz GLC-Class

Mercedes-Benz GLE-Class

Mercedes-Benz GLS

Mercedes-Benz GLS-Class

Mini Countryman

Mitsubishi ASX

Mitsubishi Eclipse Cross

Mitsubishi Outlander

Mitsubishi Pajero

Mitsubishi Pajero Sport

Renault Megane E-Tech

Renault Scenic E-Tech

Summary

2026 Audi Q3

2025 Mercedes-Benz GLC-Class

By Stephen Ottley

Safety Rating

Engine Type

Turbo 4, 1.5L

Turbo 4, 2.0L

Fuel Type

Premium Unleaded Petrol

Premium Unleaded/Electric

Fuel Efficiency

5.8L/100km (combined)

7.3L/100km (combined)

Seating

Likes

Stylish, premium looks
Well-integrated technology
Good active safety calibration

More power and torque
More fuel efficient
Stylish cabin

Dislikes

No PHEV option (yet)
A few rattles in our test car
Small back seat

Misses V8 soundtrack
Big price rise over previous model
Smaller boot, no spare tyre

2026 Audi Q3 Summary

Replacing a popular model is fraught with danger. Existing customers will tell you they love it, while focus groups of non-customers will tell you why they hate it and sometimes carmakers get caught trying to appease both groups.

Sometimes they’ll make it too big or change too much in the search for more sales and ultimately end up removing the elements that made it popular in the first place.

Which is why Audi has been extra careful with some subtle evolution for this new-generation Q3 SUV and Sportback. This isn’t just a popular model for Audi Australia, it has been the best-selling model for the German brand for more than five years, so getting it wrong would be a disaster.

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2025 Mercedes-Benz GLC-Class Summary

Let’s make one thing clear from the very beginning - this new Mercedes-AMG GLC63 S E Performance is technically superior to the model it replaces. Whether it’s actually better or not, is the real question at the heart of the matter.

Why? Because, like the C63 sedan stablemate, AMG has opted to replace the previous model’s 4.0-litre twin-turbo V8 engine with a new 2.0-litre four-cylinder hybrid powertrain. It was a move brought about in part because of increasingly stricter emissions standards in Europe, but also ties-in with the German firm’s success in modern Formula One racing.

While the new hybrid system offers more power, more torque and better fuel economy, as the lukewarm response to the C63 has demonstrated, the hard reality for AMG is that its buyers associate it with V8 and even V12 engines. That emotional pull is hard to replace with logic, even if the new model offers technical superiority.

But how does the new powertrain suit the GLC63 - is it just technically better or is it holistically improved?

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Deep dive comparison

2026 Audi Q3 2025 Mercedes-Benz GLC-Class

Verdict

So is this new Q3 good enough to remain Audi’s number one choice? In a word, yes.

Audi has resisted the temptation that some brands fall into by making too many changes to a proven sales performer. This new Q3 isn’t radically different from the old Q3, but it has improved in almost every way.

It isn’t different enough to widely expand its appeal to a new wave of customers, but there’s no reason it won’t remain Audi’s most popular choice for the foreseeable future.

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

Verdict

Like I said right from the start, this new, hybrid version of the AMG GLC63 is technically superior to the model it replaces in every meaningful way. It is faster, more powerful and more fuel efficient and therefore a better performance SUV than the model it replaces.

Is it a better model than the one it replaces? Ultimately that will come down to how much stock you put into the soundtrack and your feelings on an AMG not powered by a V8 engine.

Because if you can see past that, then the AMG GLC63 is an absolutely fantastic performance SUV. Not only does the new powertrain make it faster in a straight line, but the chassis is very well-balanced, making for an engaging driving experience.

For those who can look past the smaller engine they will be rewarded with an incredibly fast and rewarding-to-drive member of the AMG family.

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

Audi Q3 vs Mercedes-Benz GLC-Class What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Audi Q3 vs Mercedes-Benz GLC-Class
What's the difference?