Audi S3 vs Audi S8
What's the difference?

Audi S3

$73,980 - $98,888

2025 price

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Audi S8

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2021 price

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Aston Martin Vanquish

Mercedes-Benz A-Class

Mercedes-Benz A35

Mercedes-Benz A45

Mercedes-Benz AMG GT

Mercedes-Benz C-Class

Mercedes-Benz CLA-Class

Mercedes-Benz CLA250

Mercedes-Benz CLS-Class

Mercedes-Benz E-Class

Mercedes-Benz E53

Mercedes-Benz EQS

Mercedes-Benz S-Class

Mercedes-Benz SL-Class

Summary

2025 Audi S3

2021 Audi S8

By Emily Agar

By Peter Anderson

Safety Rating

Engine Type

Turbo 4, 2.0L

Twin Turbo V8, 4.0L

Fuel Type

Premium Unleaded Petrol

Fuel Efficiency

7.9L/100km (combined)

10.2L/100km (combined)

Seating

Likes

Athletic and sporty in all the right places
Improved engine outputs
Gorgeous cabin space

Technical extravaganza
Elegant looks
Punchy V8

Dislikes

Tiny back seat
Missing some premium features
Lots of road noise

Tricky to find a space big enough
Pricey
Short warranty

2025 Audi S3 Summary

In a world where car upgrades often feel like saying, “Can I upsize that?”, it’s refreshing to hop into the updated Audi S3 Sportback.

The flagship RS 3 may still be the holy grail of hot hatch dreams, but with boosted engine outputs and upgraded tech, the S3 is stepping up.

Is the S3 Sportback the smarter pick over pricier rivals? It delivers serious performance and polish without stretching into RS 3 territory. With fierce competition in the segment, let’s see what this contender brings to the table.

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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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Deep dive comparison

2025 Audi S3 2021 Audi S8

Verdict

The updated Audi S3 Sportback is a fun-sized dynamo with impressive outputs and athletic road manners. It’s missing a few premium features, but its compact size paired with a gutsy engine makes it a compelling option for drivers who don’t want to compromise on performance (just space).

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.

Audi S3 vs Audi S8 What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Audi S3 vs Audi S8
What's the difference?