Audi RS6 vs Porsche Cayenne

What's the difference?

VS
Audi RS6
Audi RS6

$252,600 - $399,000

2026 price

Porsche Cayenne
Porsche Cayenne

$144,900 - $376,200

2026 price

Summary

2026 Audi RS6
2026 Porsche Cayenne
Safety Rating

Engine Type
Twin Turbo V8, 4.0L
Electric motor type
—
Fuel Type
Premium Unleaded Petrol
Vehicle type
—
Fuel Efficiency
11.8L/100km (combined)
Electric range
—
Energy consumption

—
Battery capacity

—
Seating
5

5
Dislikes
  • Unbelievable price over standard RS6
  • You probably won’t ever see one
  • Everyone will look at you

  • No new petrol or hybrid variant (yet)
  • Coupe bodystyle loses practicality
  • Off-road bodykit looks awkward
2026 Audi RS6 Summary

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.

@carsguide.com.au Hens’ teeth have nothing on the 2026 Audi RS6 Avant GT. #audi #rs6 #audirs6 #cartok #fyp ♬ original sound  - CarsGuide.com.au
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2026 Porsche Cayenne Summary

No good deed goes unpunished.

Porsche, a brand synonymous with petrol-guzzling sports cars, tried to do the right thing and make a nearly wholesale switch to electric vehicles by the end of the decade. The problem was, while this made governments happy, it didn’t sit well with customers.

Porsche’s all-electric Macan is enduring a torrid 2026, with sales down over 75 per cent now that all the petrol-engined options are gone. 

But that hasn’t stopped the German brand trying again with an all-electric Cayenne. However, there are some key differences that mean this latest electric Porsche won’t suffer the same fate.

Namely, the petrol-powered and hybrid versions aren’t going anywhere and new versions are rumoured to be coming in the not-too-distant future.

For now though, we have this all-new electric Cayenne - so how does it stack up to its predecessors as the sports car brand’s big SUV?  And will it be second time lucky for Porsche’s electric transition? Based on two rather unorthodox days of test driving, the verdict might surprise you…

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Deep dive comparison

2026 Audi RS6 2026 Porsche Cayenne

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