Audi’s Biggest, Baddest RS Machine Has Something BMW’s M5 Can’t Match

- Audi’s RS6 e-tron wagon has been spotted testing in prototype form.
- The most hardcore take on today’s S6 e-tron could have up to 800 hp.
- Don’t worry, ICE fans; Audi is also developing a new combustion RS6.
A blend of punishing acceleration, all-wheel drive security, thug-in-a-suit good looks, versatility and practicality has made the Audi RS6 super wagon a dream daily for many of us for more than two decades. But starting next year, potential buyers will, for the first time ever, be able to choose between combustion and electric power.
Late last month we published spy shots of the petrol RS6 Avant Audi is currently developing and will reveal in 2026. This week we’ve got images of its sister model, which is entirely electric and could be even more powerful.
Related: Audi RS6 E-Tron Avant Promises Super Wagon Thrills In A Zero-Emission Package
What Lies Beneath
Though both combustion and electric models will wear RS6 badges and have similar sporty wagon silhouettes, they’re very different under the skin. While the ICE car rides on a conventional combustion platform, this time (for the first time on an RS6) equipped with plug-in hybrid tech, the EV is based on the same VW Group PPE platform already found under models like the A6 and S6 e-trons, the Q6 e-tron and the Porsche Macan Electric.
Audi hasn’t dropped any tech-spec nuggets, but considering the S6 e-tron makes 543 hp (405 kW / 551 PS), we could be looking at around 805 hp (600 kW / 816 PS) for the RS version. But even that kind of output would appear modest, given that top versions of electric sedans like the Xiaomi SU7 and Porsche Taycan are now pushing out up to 1,527 hp (1,139 kW / 1,548 PS). BMW doesn’t make an electric M5, at least not yet, and the i5 M60 only cranks out 593 hp (601 PS / 442 kW).
We expect the petrol-powered RS6 to generate less power than its electric brother, perhaps 750 hp (760 PS / 560 kW) or so, but it won’t necessarily have a performance disadvantage because it will weigh several hundred pounds less than the e-tron, which could tip the scales at around 2,500 kg (5,510 lbs) due to its hefty battery pack.

Electrifying Looks
Both versions will get wider fender flares than their regular A6/S6 brothers, and the fronts on each appear to have a vent ahead of the doors. But there are some major design differences that aren’t simply limited to the EV missing out on the ICE model’s huge twin oval tailpipes.
The EV has a split headlight treatment and blanked grille, whereas the combustion RS6 has a conventional grille and lights, but much bigger outer air intakes, which of course the e-tron doesn’t need. But at the back, the combustion car’s moustache-shaped taillights make it more distinctive.
Our money’s on the RS6 e-tron arriving first and the combustion car following later in 2026. Both cars will be available in liftback sedan and wagon body styles. We’ve added a gallery of images of the combustion car at the bottom of this post so you can spot the visual differences between the two.