Audi S8 vs Mercedes-Benz CLA-Class
What's the difference?

Audi S8

—

2021 price

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Mercedes-Benz CLA-Class

$66,500 - $91,300

2026 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

2021 Audi S8

2026 Mercedes-Benz CLA-Class

By Peter Anderson

By James Cleary

Safety Rating

Engine Type

Twin Turbo V8, 4.0L

Turbo 4, 1.5L

Fuel Type

Premium Unleaded Petrol

Fuel Efficiency

10.2L/100km (combined)

5.4L/100km (combined)

Seating

Likes

Technical extravaganza
Elegant looks
Punchy V8

Refinement
Efficiency
Safety

Dislikes

Tricky to find a space big enough
Pricey
Short warranty

Pricey servicing
Modest road feel
No physical spare tyre

2021 Audi S8 Summary

Big sedans are not in vogue at the moment and huge luxury sedans were on the way down before the humble Commodore and Falcon departed the upper end of the sales charts. The Germans, who have always done a spectacular job of these flagship sedans, cheerfully persist with these cars.

Absolutely loaded with fascinating technology that bleeds its way down to the more mainstream models, they represent the zenith of the brand's innovation and style. The A8 is certainly that.

What it isn't, is particularly sporty, but after two years since its launch, V8 power has reached the fourth-generation super-sedan to deliver the latest iteration of the iconic S8.

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2026 Mercedes-Benz CLA-Class Summary

Mercedes-Benz has shifted its CLA compact coupe-style sedan from support player to headline act with the introduction of this all-new, third-generation version.

It exemplifies the German giant’s multi-powertrain approach with an expansion of the local line-up from two pure-combustion variants to a five-model range comprising three hybrid and two pure-electric options.

CarsGuide was invited to sample the hybrid version of the newcomer (the EVs arrive in July), so stay with us to see if this sleek four-door is your kind of premium European compact sedan.

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Deep dive comparison

2021 Audi S8 2026 Mercedes-Benz CLA-Class

Verdict

The S8's existence is a source of joy for me because it's not a huge SUV. Yes, it's a huge sedan but it's a reminder that the technological flagship is alive and well, at least in Germany. And the important thing about these cars is the way the toys filter down through the rest of the range. That used to take years but we're seeing this cool stuff a lot more quickly, right down to the A1.

The S8 punches, and punches hard in this rarefied part of an already shrunken section of the market - the twin-turbo V8 matches its German rivals, it's lighter and it's as well-stacked as any of the three. What it doesn't do, however, is shout about itself the way the other two do. It's the incognito choice.

Verdict

The broadening of the CLA’s scope in this third-gen version puts it a step ahead of key rivals and raises the compact sedan’s prominence in the three-pointed star’s local line-up. Its combination of quality design, performance and efficiency is compelling. And we’ll drive the battery-electric version as soon as it lands.

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

Audi S8 vs Mercedes-Benz CLA-Class What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Audi S8 vs Mercedes-Benz CLA-Class
What's the difference?