The Best Exhaust Systems for the Audi S3 8V — Quattro-Tech Performance Guide

The Audi S3 8V is one of those cars that delivers serious performance for the price — sharp, capable, and effortlessly quick. But if there’s one thing most owners agree on, it’s that the stock exhaust doesn’t quite live up to the car’s potential. 

That’s where an upgrade makes all the difference. At Quattro-Tech Performance, we specialise in supply + fit performance parts for the full VWG range, so we know what works, what fits, and how to make your S3 sound and perform like it should. 

Whether you’re chasing a deeper tone, sharper throttle response, or just a cleaner look at the back, here’s our expert breakdown of the best exhaust options for the Audi S3 8V.

Understanding Your S3 8V Variant 

Before choosing your exhaust, it’s important to know which version of the S3 8V you have. 

The headlights are usually the quickest giveaway — slimmer and more angular for the facelifted cars. 

You’ll also want to confirm your body style: 

• Sportback (5-door) 

• Saloon (4-door) 

Each has unique fitment requirements, so a system for the Sportback won’t fit the Saloon. When we supply & fit at Quattro-Tech Performance, we ensure your kit matches your car precisely before your order is placed. 

What an Exhaust Upgrade Brings 

Swapping your OEM system for a performance exhaust transforms more than just the sound: 

• Deeper, more refined tone — or full-on aggression if you prefer 

• Improved flow for sharper throttle response 

• Reduced weight in many premium systems 

• Smarter aesthetics with new tailpipe styles 

• Optional valved setups for adjustable noise control 

Even a resonator delete is a good first step if you’re not ready for a full system. It opens up the note, improves flow, and can be fitted across the 8V range — including GPF cars.

Our Expert Picks: Milltek, Scorpion & Cobra Sport

We’ve tested and installed hundreds of systems across the S3 8V range. These are our go-to exhausts from Milltek, Scorpion, and Cobra Sport — brands we trust for their build quality, fitment accuracy, and unbeatable tone.

🟢 Best Exhausts for Audi S3

Milltek Sport GPF-Back System – https://qtperformance.co.uk/product/milltek-sport-audi-s3-8v-cat-back-exhaust-system/

• Designed specifically for post-2019 models with a Gasoline Particulate Filter

• Retains GPF functionality while improving exhaust flow

• Offers a refined yet assertive tone

Scorpion GPF-Back System – https://qtperformance.co.uk/product/scorpion-exhaust-audi-s3-8v-cat-back-exhaust-system/

• Hand-crafted in the UK with perfect fitment

• Valved and non-valved versions available

• Delivers a clean, deep sound with no annoying drone

Cobra Sport GPF-Back – https://qtperformance.co.uk/product/cobra-audi-s3-8v-cat-back-exhaust-system/

• Great value system for GPF-equipped cars

• Louder and sportier tone without being overbearing

• Ideal for daily-driven S3s

Why Choose Quattro-Tech Performance

At Quattro-Tech Performance, we’re not just fitters — we’re VAG specialists with decades of experience in Audi tuning, upgrades, and performance builds.

When you book with us, you get:

• Professional supply & fit service

• Perfect fitment guaranteed

• Tailored advice for your goals and budget

Contact us today so we can get your Audi S3 8V exhaust upgrade underway!