Audi RS6 vs Mercedes-Benz G63

What's the difference?

When I say this is a rare review, I’m talking about the kind of rare that means you can’t even buy the car you’re reading about.

The 2026 Audi RS6 Avant GT you’re looking at in the pictures around this story is number 248 of 660. That’s six-hundred and sixty worldwide.

In Australia, there are only 22 RS6 GTs, and they’re all sold - at exorbitant prices, mind you, but we’ll get to that.

The RS6 GT is essentially a production version of the Audi RS6 GTO concept, built in 2020 and inspired by the Audi 90 quattro IMSA GTO race car, which means the RS6 GT carries a lot of ‘90 GTO’ in the way it looks. More on that shortly.

Aside from its extremely limited availability and its design package, there are some mechanical changes to increase the appeal of the RS6 GT, though whether any of its owners will put the on-road (or on-track) ability of this special wagon from Ingolstadt to the test remains to be seen.

A couple of days to live with one of the few RS6 GTs in Australia should reveal how special this car feels, and result in at least one example of the rarity being driven good and proper.

Everything you need to know about the Mercedes-AMG G 63's personality pokes out from underneath the polished alloy steps running down each of its flanks. Side pipes… no one does side pipes.

A colleague was pulled over in a G 63 because the cops thought the '60s muscle car-style exhaust was after-market and illegal. But it's not, and it's brilliant.

Launched globally in early 2018, this brutal take on the second-generation Mercedes-Benz G-Class might look the same as the G 63 it replaces, but under the skin it's a whole new ballgame.

The first-gen was like grandpa's axe, regularly updated but underneath it all the same basic framework. This is a whole new axe, including a fresh drivetrain, suspension set-up and interior treatment.