Audi A4 vs Audi RS6

What's the difference?

VS
Audi A4
Audi A4

$31,444 - $49,969

2021 price

Audi RS6
Audi RS6

$252,600 - $399,000

2026 price

Summary

2021 Audi A4
2026 Audi RS6
Safety Rating

Engine Type
Diesel Turbo, 2.0L

Twin Turbo V8, 4.0L
Fuel Type
Diesel

Premium Unleaded Petrol
Fuel Efficiency
5.2L/100km (combined)

11.8L/100km (combined)
Seating
5

5
Dislikes
  • Space-saver tyre
  • Short warranty
  • Paying extra for driver-assist tech

  • Unbelievable price over standard RS6
  • You probably won’t ever see one
  • Everyone will look at you
2021 Audi A4 Summary

The Audi A4 allroad is the off-roader of the A4 line-up. I’m using the term ‘off-roader’ loosely here because this wagon is obviously best suited to daily duties in a city and suburbs, with perhaps an occasional foray into very light off-roading, i.e. driving on a well-maintained gravel or dirt road with few, if any, corrugations, and in dry weather only. 

But that’s not a negative factor because the great thing about adventures is that they can be scaled to suit you, your lifestyle and your vehicle of choice.

However, is this allroad your best option for a comfortable, nice-driving all-rounder? Read on.

View full pricing & specs
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
View full pricing & specs

Deep dive comparison

2021 Audi A4 2026 Audi RS6

Change vehicle