The Audi A6, S6 & RS6 sit right in the sweet spot of Audi’s incredible lineup, with executive style comfort, yet genuine supercar pace at the same time. The RS6 in particular has become one of the most loved performance cars on the road, with the A6 and S6 sharing the same clean body, ready for some adjustments.
If you own any of these models, you probably want to search for something more, knowing stock just doesn’t quite hit the right spots.
Maybe you want the full RS6 look on your A6 or S6. Maybe you've got the RS6 and you want it louder and faster. Either way, the right mods take this platform from sharp to unforgettable.
We’ve got the best mods for your Audi A6, S6, and RS6 listed below, so you can upgrade your car with confidence.
Exterior Mods for the Audi A6, S6, & RS6
The 2019+ Audi C8 body already looks the part, but a few well-chosen upgrades help push it from understated to aggressive without ever looking overdone.
Here are some of our favourite exterior modifications for the Audi A6, S6 & RS6 range.
RS6 Style Honeycomb Grille
Nothing changes the face of an A6 or S6 faster than the front grille. A RS6 style honeycomb grille swaps the softer factory slats for the aggressive honeycomb mesh look that makes the RS6 so recognizable.
It's the single biggest visual upgrade you can make up front, and it instantly gives earlier models that newer appearance. Options are available with and without front camera and ACC cutouts, so it fits cleanly no matter how your car is equipped.
RS6 Style Fog Light Grilles
The RS6 style fog light grilles are one of those small details you don't notice until they're on your own car.
Paired with the honeycomb grille, they tie the whole front end together and complete that uniform RS look across the bumper. They’re a relatively cheap & fast upgrade that punches well above its price.
Carbon Fiber Mirror Caps
Carbon fiber mirror caps are the easiest way to add a sleek motorsport touch to your A6, S6, or RS6.
They're lightweight, hold their gloss finish through weather and wash cycles, and tie in beautifully with other carbon pieces like a spoiler or diffuser. A super quick attachment that can change your car's look within minutes.
Carbon Fiber Trunk Spoilers
A spoiler is the classic rear-end upgrade, and there’s a couple of styles you can choose from for these cars. The V style carbon fiber spoiler adds a sharper, more aggressive lip, while the OEM style carbon fiber spoiler keeps things subtle with a factory-inspired shape.
Both are made from real carbon fiber, making them light, strong, and an easy way to lift the back of the car without going over the top.
Carbon Fiber Rear Diffuser
For one of the biggest visual changes to the rear of your car, the aggressive KB style carbon fiber diffuser is hard to beat. It drops the visual height of your backend, sharpens the whole stance, and comes with an integrated LED brake light for a finished, custom look.
Performance Mods for the Audi A6, S6 & RS6
The S6 and RS6 are seriously quick straight from the factory, but there's still some real performance and sound left on the table. These are the upgrades that you'll feel and hear every time you drive.
Valved Sport Exhaust System
If you own an RS6, a valved sport exhaust system is the upgrade that will transform your car. That twin-turbo 4.0L V8 has a monster of a voice, and a valved system lets it out properly.
The valves let you keep it civil for the daily commute, then open everything up when you want the full V8 roar, all with the click of a button.
On top of the sound, the freer-flowing design improves exhaust flow and throttle response. It's available in stainless steel or titanium, with a range of tip finishes to match your build.
Downpipes & Front Race Pipes
Downpipes are where the real performance gains hide. Replacing the restrictive factory units frees up exhaust flow, sharpens turbo spool, and adds a noticeably more aggressive tone.
There’s no shortage of downpipes on the market, including RS6/RS7 downpipes for the V8 cars, and S6/S7 downpipes for the 2.9L twin-turbo V6. Both come with catted and catless options depending on how far you want to push it.
Paired with a valved exhaust, downpipes give you a deeper note, faster response, and a real bump in power delivery. Just keep in mind that catless race pipes may affect emissions compliance, so check your local regulations before installing.
So, Which Mod Should You Start With?
That ultimately depends on what you’re trying to achieve with your build. The Audi A6, S6, and RS6 are all excellent cars straight from the factory, but there’s definitely ways you can make them truly unique.
If you want some quick visual wins, starting with a honeycomb grille or carbon fiber mirror caps are some high impact modifications you can make. They both are easy to fit, only take a short amount of time, and will make your car stand out from a stock version.
If you’re chasing performance, it’s hard to go part a downpipe and valve exhaust combo. This is where performance really comes to life, and you’ll notice it on every drive with the amount of power you have off the line and at speed.
At German Car Accessories, every part we stock is built for precise fitment, premium quality, and a difference you can actually see and feel, so you can build your A6, S6, or RS6 your way, with confidence.
