Land Rover Discovery vs Porsche Cayenne

What's the difference?

The Land Rover Discovery D300 S is a great family-friendly 4WD wagon.

It’s quiet, refined, and supremely well appointed; it’s also very nice to drive on-road and it’s a lot of fun – and very capable – off-road. 

It’s packed full of driver-assist tech and its Pivi Pro system is a real treat to use once you’ve mastered the art, which doesn’t take long.

But you could say all of those same things about the new Defender. 

So, is the Discovery still relevant? I reckon it is … at least for the time being.

Of all the super SUVs I've piloted, the Porsche Cayenne Turbo GT is the best all-rounder in terms of performance, comfort, cabin technology and style.

As a family car it's roomy, practical and easy to use and drive daily.

As a performance car the Turbo GT is stupidly quick, with the agility of a sports car. Sure, a 911 would leave it behind on a twisty race track, but this SUV is close to having that sportscar experience and keeping your family, as well.

As always, I’ll avoid waxing lyrical about the styling of a vehicle – suffice to say, it looks good.

In terms of dimensions, this Discovery is 4956mm long (with a 2923mm wheelbase), 2220mm wide and 1888mm high.

It has a listed kerb weight of 2437kg.

This might be a personal thing but to me nearly all Porsches look better from the back than the front.

It's the wide stance and powerful haunches, the hunkered down suction-capped-to-the-road look that does it for me and the Cayenne Turbo GT, despite being an SUV, passes this important Porsche checklist item.

The GT aero kit only serves to make this SUV look more of a beast, and the gold-bronze looking satin Neodyne wheels are a Porsche theme that I've not always been a fan of, but I get the historic connection.

If only the Turbo GT could look a little less like other Cayennes from the front. This is the king of the SUV range and despite the apron and bumper already being exclusive to this model, there should be more.

Vents in the wheel arches, carbon bonnet with nostrils GT3-style perhaps? Or is that going too far? If you do want something more lairy then there's always the Urus.

The Cayenne Turbo GT's cabin is stunning in its plushness and modern surprises such as the passenger display, the hoodless instrument digital cluster, the lashings of Race-Tex upholstery everywhere. It's perfectly Porsche. High-performance meets high-end.

It's also highly practical. Let's talk about that.

The interior has a real premium feel about it, but it still serves as a very practical space.

In terms of cargo space, there is 2391 litres with the second and third row stowed away; 1137 litres with the third row stowed away; and 258 litres with all rows in use.

The third-row seats can be either manually folded down into the floor to use that area as cargo space, or lifted up into a seating position.

There is a load-space cover, light, luggage tie-downs, bag hook and 12v in the rear, and two USB charging sockets for the third-row passengers.

The second row is a 60:40 electric-folding set-up with manual slide and powered recline, centre headrest and armrest, as well as map pockets, and door-moulded recesses. Second-row passengers get two USB C and one USB A charging points, air vents, air-con controls and more.

The front seats are 14-way electrically-adjustable with captain’s armrest, grained leather seat facings with Ebony interior; the Pivi Pro 11.4-inch touchscreen with digital radio, Apple CarPlay and Android Auto; as well as one USB A and three USB C points.

The Discovery has a fixed front and rear panoramic roof.

The Porsche Cayenne Turbo GT only makes one compromise on practicality and that's the removal of the middle seat in the back, which, with just two kids isn't used all the time but on average we might need it once a week for school mates and cousins.

Instead of a middle seat there is a shallow tray, which will fit a phone or in our case leaves and rocks found at the park.

So, yes, the Turbo GT is a four-seater only, but this is a spacious, large SUV with good head and legroom, wide-opening doors for easy entry and exit, and air suspension which can raise and lower the height for easy access.

Storage is excellent with enormous door pockets in the front and back and there are four cupholders.

There's a wireless phone charger in the front and two USB-C ports as well, plus two USB-C sockets in the back.

Four-zone climate control means the kids in the back can set their own temperatures. They also have heated seats.

I was disappointed to see there aren't sunshades for the rear windows - pretty vital in Australia where it feels like we're only about 50 metres away from the sun.

The Turbo GT's 576-litre boot just managed to fit our pram and a week's shopping, which is our minimum standard for living. Any more space is a bonus.

The Turbo GT is the king of Cayennes, so it shouldn't surprise anybody that it's also the most expensive with its list price of $364,700.

Lamborghini's Urus lists for $409,744  and is the Cayenne Turbo GT's not-so-subtle Italian cousin, sharing the same platform and engine.

Both are in my mind the best performance SUVs on the planet. It just depends how conspicuous you want to be.

Then there's Bentley's V8 Bentayga which isn't blessed with the Porsche's good looks but would still be all over the Cayenne if the two happened to meet at a race track.

So, why is the GT Turbo the king of the Cayennes? What makes it better? For all the reasons you'd think - it's the fastest, most powerful, most luxurious and most equipped Cayenne in the range.

We'll get into mind-bending engine and performance specs soon, but first let me take you through the standard features on a car that's anything but standard.

Coming standard and exclusively to the Turbo GT are 22-inch 'GT Design' wheels in satin 'Neodyne' with full-colour Porsche centre caps, an active rear spoiler, Turbo GT front apron, dual titanium exhaust, rear apron with diffuser, 'SportDesign' side skirts, wheel arch extensions, a lightweight carbon roof and tinted LED HD-matrix headlights.

Inside, and also exclusive to this grade, is the 'GT Interior Package' with 'Race-Tex' upholstery throughout with 'Deep Sea Blue' stitching on the front seats and centre console and the armrests and dashboard.

There's also the 'Carbon Interior Package' which includes dashboard and door trim elements.

Race-Tex trim is applied to the 'GT Sports' steering wheel, roof lining and gearshift, too.

The adaptive active air suspension, which can lower the car by 15mm, is standard and only available on the Turbo GT, too.

The soft-close doors are standard (a cost option on lower grades), as are the stainless steel pedal covers.

The rest of the features are also found on lower grades and include the 12.65-inch digital instrument cluster, head-up display, proximity unlocking, 12.3-inch multimedia touchscreen with sat nav, wireless Apple CarPlay and Android Auto, digital radio, a 10-speaker Bose sound system, heated front seats, rear privacy glass and an auto tailgate.

Four-zone climate control is standard on the GT Turbo, too, and so are heated rear seats.

Our car had several options fitted such as the front passenger display ($2860) and the Deep Sea Blue Accent Package.

The passenger display is a crowd pleaser, but as a family car my kids felt like they were missing screens in the back seats, too. Well, in my day...

The Discovery has a 3.0-litre inline six-cylinder twin-turbo-diesel engine – producing 220kW at 4000rpm and a whopping 650Nm at 1500-2500rpm – working with a mild hybrid system. 

Those impressive power and torque figures don’t tell the whole story of just how well the Disco’s engine is able to punch this big unit along the road at a comfortable clip and – bonus – its chunk of torque, useable across a decent rev range, comes in very handy when off-roading.

It has an eight-speed automatic transmission and an all-wheel drive system.

As a middle-aged parent with two children, a Porsche that I don't have to crawl into and out of like a cubby house is a great thing.

What's even better is that this ‘easy access' Porsche is every bit as brutally powerful and fast as the quintessentially ‘pure' Porsche, the 911. Actually, it's more powerful and faster.

The Turbo GT's twin-turbo 4.0-litre V8 petrol engine makes 485kW and 850Nm with drive going through an eight-speed transmission to all four wheels.

In comparison, a Porsche 911 GT3 RS, arguably the most brutal and anti-social 911, has 386kW/485Nm.

I haven't made a mistake. Those are the real numbers. And it's only when you step on the accelerator in the Cayenne Turbo GT, and it feels like somebody's sat down on your chest, that you realise what a big deal this is.

That is such a colossal amount of oomph that this 2.2-tonne family SUV can accelerate from 0-100km/h in 3.3 seconds.

The 911 GT3 RS can do it in 3.2 and it has a roll cage and a fixed rear wing the size of a bedroom door.

And yes, we're now coming into a digital age where Teslas and other electric SUVs are quick, too, but can they go around corners like a Porsche Cayenne Turbo GT?

Do they have the same rumble and roar as a twin-turbo V8 that's terrifying and enticing at the same time.

The correct answer is, absolutely not.

Fuel consumption is listed as 7.5L/100km on a combined cycle. 

Fuel consumption on this test was 9.8L/100km. That’s sound considering I did a lot of high- and low-range 4WDing on this test and the Disco is quite a hefty unit.

The Land Rover Discovery D300 S has an 89-litre fuel tank, so, going by those fuel-consumption figures, I’d expect an effective touring range of about 860km, but remember that figure includes a built-in 50km safe-distance buffer. 

Seriously? This is a 2.0-tonne twin-turbo petrol V8 with a 90-litre fuel tank. Even the Porsche specs sheet doesn't understand the question because in the column for fuel efficiency there are three letters - tbc.

My own testing saw me record 22.5 L/100km at the fuel pump, which means I enjoyed driving the car very much.

A little digging around reveals Porsche globally claims the Turbo GT will use 12.6L/100km, over a combination of open and urban roads.

You might not have as much fun as I did but easing back a little might get you closer to the 700km of range this more frugal consumption figure appears to offer.

While efficient it isn't, I'm not going to mark the Turbo GT too much here because compared to its petrol rivals the fuel consumption is what I'd expect from such a high-output heavy SUV.

The Discovery is very impressive on-road. No surprise really as it has always had a reputation as a comfortable on-road cruiser – and it's lost nothing in this latest iteration. 

It is a smooth driving experience: quiet, refined and you suffer little to no noise from outside intruding into the cabin. 

The seats are very comfortable and supportive, and that makes it perfect for long-distance trips. 

The straight-six engine and eight speed auto are a nice combination, quietly effective, and well-managed. 

Acceleration is good with sharp throttle response, so you can crack on the pace when you need to, say, for instance, from a standing start or when you need to overtake a vehicle. 

In terms of overall driving experience, there’s nothing too outrageously exciting or dynamic on offer here, because this is a large SUV, but it’s always comfortable and it’s lively enough if you want to give it the boot. There are paddle shifters if you want to get fancy with your up- and down-shifting.

It’s not all good news: visibility from the driver’s seat is a bit pinched out the rear of the Discovery (due to its styling); there is pronounced body-roll through corners; the brakes are quite spongy, with a real delayed-action feel about them; ride is a tad harsh because you are rolling along on 20-inch tyres and rims, which is something I’m not so used to; and, the steering column is manually adjustable only, which I reckon is a bit slack for such a pricey vehicle.

Never have I met a car this powerful and superbly athletic that is as pleasurable to drive alone on great, fast roads as it is to pilot at 50km/h in the suburbs with a family on board.

It exceeds my understanding of engineering that something this large can move so quickly. That in an instant can turn and tip into a corner with such precision and effortlessness.

Yet it can switch seamlessly and happily to coping with speed bumps and potholes, delivering a ride so comfortable it'll send babies off to sleep. And it did.

The only issue, and this is such a tiny thing, is the dash-mounted gearshift, which means having to reach up and select Drive or Reverse or Park, which, when executing a three-point turn, is necessarily frustrating.

Still, I'm giving the Turbo GT a 10 out of 10 for driving under all conditions, and we didn't even go off-road, which of course you can do, as long as it's not too wild.

The Porsche Cayenne Turbo GT hasn't been locally crash tested and so doesn't have an ANCAP rating.

That's quite normal for super high-end cars. But, when this third-generation model first arrived in 2017 it was tested by ANCAP's European equivalent, Euro NCAP, and was awarded the maximum five stars.

There's AEB which operates at city, urban and highway speeds, and lane keeping assistance, and lane change assistance which is a form of blind-spot warning, and adaptive cruise control. You can option rear cross-traffic alert, as well.

A space saver spare wheel is under the boot floor.

The Discovery has a five year/unlimited km warranty with five years roadside assistance.

The service plan applies over five years/130,000km (whichever occurs first) with a cost of $2650.

The Cayenne Turbo GT is covered by Porsche's three-year, unlimited kilometre warranty, which is lagging behind in terms of duration even compared to other luxury brands such as Mercedes-Benz, which offers five years.

Servicing is recommended annually or every 15,000km, although there isn't a capped price maintenance plan with final costs determined at the dealer level (in line with variable labour rates by state or territory).