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Mercedes-Benz S-Class vs Audi S5

What's the difference?

VS
Mercedes-Benz S-Class
Mercedes-Benz S-Class

$169,800 - $189,800

2021 price

Audi S5
Audi S5

$79,800 - $93,990

2021 price

Summary

2021 Mercedes-Benz S-Class
2021 Audi S5
Safety Rating

Engine Type
Twin Turbo V6, 3.0L

Turbo V6, 3.0L
Fuel Type
Premium Unleaded Petrol

Premium Unleaded Petrol
Fuel Efficiency
8.4L/100km (combined)

8.6L/100km (combined)
Seating
5

5
Dislikes
  • Price of entry prohibitive for most
  • 3D instrumentation can make you woozy
  • A tad conservative in design

  • Still no wireless CarPlay
  • Three-year warranty lags behind cheaper brands
2021 Mercedes-Benz S-Class 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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2021 Audi S5 Summary

Audi would probably prefer you not to realise this, but the five distinct versions of S4 and S5 on the market all pertain to a single performance and equipment formula spread across five different bodystyles. 

Yes five, and this has been the case for more than a decade, with the S4 sedan and Avant wagon, A5 two-door Coupe, convertible Cabriolet and five door liftback Sportback all representing vastly different shapes for you to choose from, with the same underpinnings. This simply echoes the A4 and A5 ranges they’re based on of course, and BMW clearly thought it was a good idea too, given the 3 and 4 Series ranges were split into individual lines at the start of last generation.

Mercedes-Benz offers a similar array, minus the liftback, but is happy to wrap the whole lot under the C-Class label. 

So, given that the A4 and A5 range scored a mid-life update a few months ago, it’s only logical that the changes flow on to the performance S4 and S5s, with the top-tier RS4 Avant following suit. 

We’ve covered the latter in October, and now it’s the turn for the former, and CarsGuide was among the first to drive the updated S4 and S5 ranges at their Australian media launch last week.

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Deep dive comparison

2021 Mercedes-Benz S-Class 2021 Audi S5

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