Audi Q7 vs Mercedes-Benz S450

What's the difference?

VS
Audi Q7
Audi Q7

$75,880 - $129,990

2025 price

Mercedes-Benz S450
Mercedes-Benz S450

2021 price

Summary

2025 Audi Q7
2021 Mercedes-Benz S450
Safety Rating

Engine Type
Turbo V6, 3.0L

Twin Turbo V6, 3.0L
Fuel Type
Diesel/Electric

Premium Unleaded Petrol
Fuel Efficiency
7.0L/100km (combined)

8.4L/100km (combined)
Seating
7

5
Dislikes
  • Thirst for fuel
  • Lack of front row storage
  • Occasional drivetrain hesitation

  • Price of entry prohibitive for most
  • 3D instrumentation can make you woozy
  • A tad conservative in design
2025 Audi Q7 Summary

The updated Audi Q7 is a bit of a game of ‘spot the difference’ - but even though it’s far from a new generation, the update is more than just some shiny new bits.

While the brand’s first SUV is still in its second generation, a bit of modernised design and some tech tweaks are aimed at keeping it in line with rivals, even as it nears a decade on sale. 

As well as the new features, there’s also a new variant bound for Aussie showrooms. So, is it still up to the task?

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2021 Mercedes-Benz S450 Summary

It's only in the running for the title of world's best luxury car. No biggie here, then.

Like Rolex and Concorde, S-Class has become a byword for ultimate, and deserved or not, the Mercedes-Benz defines its segment despite the best efforts of the BMW 7 Series, Audi A8, Lexus LS and (sadly now-defunct) Jaguar XJ, as well as pointing the way forward with new technologies that eventually trickle down to more proletarian models.

Replacing the half-million selling W222 unveiled in 2013, the W223 is the latest in a long line since the first W187 Ponton debuted in 1951, and includes the famous ‘Finnies' and Stroke-8 models that followed immediately afterwards, but it is the 1972 W116 that really set the template.

Now, seven generations in, the 2021 S-Class is all-new again, with progressive safety and interior features that should help keep it Australia's bestselling full-sized upper-luxury sedan.

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Deep dive comparison

2025 Audi Q7 2021 Mercedes-Benz S450

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