Porsche Cayenne vs Audi Sq8 E-Tron

What's the difference?

The Porsche Cayenne Turbo GT needs a better name. This is the king of Cayennes and quite possibly the ruler of all super SUVs.

Well, the Cayenne Turbo GT is the fastest SUV around the Nurburgring Nordschleife. Not just that, it has such colossal power and torque it'll be side-by-side with a Porsche 911 GT3 RS in a sprint from 0-100km/h. No, a better name for this SUV would be the Cayenne GT3.

Which is perfect for me because I'm at the point in my life where although I love full-on and noisy cars I also have a full-on and noisy family.

We lived with the Cayenne Turbo GT for a week to find out if this super SUV was also a super family car - from practicality to safety.

We're also a family with ridiculously high expectations of luxury SUVs having lived with and tested each of the Cayenne Turbo GT's rivals - from the Lamborghini Urus and Bentley Bentayga to the Aston Martin DBX and Alfa Romeo Stelvio Quadrifoglio.

Late last year, Audi gave its large SUV range a freshen up by stocking its showrooms with the Q8 55 e-tron model; a rebadged, facelifted full-sized electric SUV designed to go head-to-head with things like the Mercedes-Benz EQE.

As it turned out, the Q8 55 was destined to become the mid-spec model and now Audi has book-ended the Q8 range with the entry-level Q8 e-tron 50 and the flagship SQ8 e-tron.

And while the previous 55 model was available in Sportback and SUV (station-wagon) forms, the latter has now been dropped.

That leaves the 50 model as an SUV only, while the headline act – and the vehicle we’re testing here – the SQ8 can be had in either body style.

The reason we’re concentrating on the biggest, baddest, most expensive variant, is that’s precisely what Audi is tipping the Australian market will gravitate towards.

In fact, as many as 70 per cent of Q8-platform sales could be the SQ8. That’s in line with the Australian market’s fondness for spending up big on the sportiest version of many makes and models, but it remains a bit of an anomaly in the rest of the car-buying world. Nevertheless, it remains the reason we’re focussing on that variant here.

Of course, electrification has never been more important for a carmaker operating here since the New Vehicle Efficiency Standard was announced recently, and even though the Q8 range will be a small percentage of Audi’s sales here, any EV represent progress towards meeting corporate targets.