2024 Porsche Cayenne vs 2021 BMW X5

What's the difference?

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.

There is no doubt that BMW seriously stepped up its game with the fourth-generation X5, raising its levels of luxury and technology, all the way to that of the flagship 7 Series.

The X5’s mix of imposing looks and relatively well sorted dynamics is complemented by the xDrive30d’s brilliant engine and transmission.

It’s no surprise, then, that the X5 continues to be its best in xDrive30d form. There really is no need to consider any other variant.

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.

Few SUVs are as imposing as the X5 xDrive30d. Simply put, it commands attention on the road, or even from across the road. Or a mile away.

The sense of commanding presence starts at the front, where the first signs of its sports body kit are. As impressive as the trio of large air intakes is, it’s the engorged version of BMW’s signature kidney grille that gets people talking. It’s simply appropriately sized for a vehicle this big, if you ask me.

The adaptive LED headlights integrate hexagon-style daytime running lights, which look the business, while the LED foglights below also help to light the way.

Around the side, the X5 xDrive30d is also pretty slick, with our test vehicle’s optional bi-colour 22-inch alloy wheels ($3900) filling its wheelarches nicely, with blue brake callipers tucked behind. The ‘air curtains’ also look sporty alongside the high-gloss Shadow Line trim.

At the rear, the X5’s three-dimensional LED tail-lights look superb, combining with the flat tailgate to deliver a strong impression. Then there’s the chunky bumper, with dual exhaust tailpipes and a diffuser insert. Not bad at all.

Step inside the X5 xDrive30d and you’d be excused for thinking that you’re in the wrong BMW. Yes, it could very well be a body-double for the 7 Series luxury sedan. In fact, in many ways, it’s just as luxurious as BMW's flagship model.

Granted our test vehicle had optional Walknappa leather upholstery covering its upper dashboard and door shoulders ($2100) , but even without that it is still a seriously premium affair.

Vernasca leather upholstery is the X5 xDrive30d’s standard choice for seats, armrests and door inserts, while soft-touch materials are pretty much found everywhere else. Yep, even on the door bins.

The ambience is further heightened by the Anthracite headliner and ambient lighting, which makes things feel even sportier.

Speaking of which, while it might be a large SUV, the X5 xDrive30d still has a genuinely sporty side, as exhibited by its chunky steering wheel, supportive front seats and grippy sports pedals. They all make it feel that bit more special.

The X5 also has cutting-edge technology, highlighted by the pair of sharp 12.3-inch displays; one being the central touchscreen, the other a digital instrument cluster.

Both are powered by the now-familiar BMW OS 7.0 multimedia system, which was a stark departure from its predecessor in terms of layout and functionality. But that’s no bad thing, as it still raises the stakes, especially with its always-on voice control.

Users will also be stoked by this set-up’s seamless support for wireless Apple CarPlay and Android Auto, with the former connecting with ease upon re-entry, although it does consistently dropout if the iPhone involved is placed in the cubby directly beneath the dash...

That said, the instrument cluster is fully digital, having abandoned the physical rings of its forbear, but it looks dim and still lacks the breadth of functionality that some rivals offer.

And let’s not forget the brilliant windshield-projected head-up display, which is large and crisp, giving you few reasons to look away from the road ahead.

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.

Measuring 4922mm long (with a 2975mm wheelbase), 2004mm wide and 1745mm, the X5 xDrive30d is a large SUV in every sense of the term, so it’s no surprise that it does practicality very well.

The boot’s cargo capacity is generous, at 650L, but it can be expanded to a very helpful 1870L with the 40/20/40 split-fold rear bench stowed – an action that can be taken via the boot’s manual-release latches.

The split power-operated tailgate ensures that access to the wide and flat rear storage area couldn’t be any easier. And there are four tie-down points and a 12V power outlet on hand.

There are plenty of genuine in-cabin storage options, too, with both the glovebox and central bin on the larger side, while the front door bins can carry a stunning four regular bottles. And don’t worry; their rear counterparts can take three apiece.

Better yet, two cupholders are located at the front of the centre console, while the second row’s fold-down armrest has a pair of pop-out cupholders as well as a shallow tray with a lid.

The latter joins the small driver's side cubby and the two trays at the rear of the centre console as the most random storage spaces on hand, while map pockets are attached to the front seat backrests, which integrate USB-C ports.

Speaking of the front seats, sitting behind them, it becomes apparent how much space there is inside the X5 xDrive30d, with oodles of legroom available behind our 184cm driving position. We also have about an inch of headroom, even with the panoramic sunroof fitted.

What’s really impressive is how well the second row accommodates three adults abreast. There’s enough room on offer that a fully grown trio could go on a long journey with few complaints, partly thanks to the almost non-existent transmission tunnel.

Child seats are also easy to fit, thanks to the three top-tether and two ISOFIX anchorage points, as well as the generous aperture of the rear doors.

Connectivity-wise, there’s a wireless smartphone charger, a USB-A port and a 12V power outlet ahead of the aforementioned front cupholders, while a USB-C port is found in the central bin. Rear occupants also get a 12V power outlet below their central air vents.

Priced from $121,900 plus on-road costs, the xDrive30d slots between the xDrive25d ($104,900) and xDrive40i ($124,900) at the lower end of the X5 range.

Standard equipment in the X5 xDrive30d that hasn’t been mentioned yet includes dusk-sensing lights, rain-sensing windshield wipers, power-folding side mirrors with heating functionality, roof rails, keyless entry and a power-operated tailgate.

Inside you'll also find push-button start, satellite navigation with live traffic, digital radio, a 205W sound system with 10 speakers, power-adjustable front seats with heating and memory functionality, an auto-dimming rearview mirror and M-branded scuff plates.

In typical BMW fashion, our test vehicle was fitted with several options, including Mineral White metallic paintwork ($2000), bi-colour 22-inch alloy wheels ($3900) and Walknappa leather upholstery for the upper dashboard and door shoulders ($2100).

Rivals for the X5 xDrive30d include the Mercedes-Benz GLE300d ($107,100), Volvo XC90 D5 Momentum ($94,990) and Lexus RX450h Sports Luxury ($111,088), meaning it’s relatively expensive, although specification isn’t exactly like for like.

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.

As its name suggests, the X5 xDrive30d is motivated by the same 3.0-litre turbo-diesel inline six-cylinder engine used in other BMW models, and that’s a very good thing, because it’s one of my favourites.

In this form, it produces 195kW of power at 4000rpm and a very useful 620Nm of torque from 2000-2500rpm – perfect outputs for a large SUV.

Meanwhile, an eight-speed ZF torque-converter automatic transmission (with paddle-shifters) – another favourite – and BMW’s fully variable xDrive system are responsible for sending drive to all four wheels.

As a result, the 2110kg X5 xDrive30d can sprint from standstill to 100km/h in a hot-hatch-like 6.5 seconds, on the way to its top speed of 230km/h.

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 X5 xDrive30d’s fuel consumption on the combined cycle test (ADR 81/02) is 7.2L/100km, while its carbon dioxide (CO2) emissions are 189g/km. Both claims are strong for a large SUV.

In the real world, we averaged 7.9L/100km over 270km of driving that was slightly skewed towards highways over city roads, which is a very solid result for a vehicle of this size.

For reference, the X5 xDrive30d has a large, 80-litre fuel tank.

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.

When it comes to ride and handling, it would be easy to argue that the X5 xDrive30d’s combination is class-leading.

While its suspension (double-wishbone front and multi-link rear axles with adaptive dampers) has a sports tune, it stills rides comfortably, wafting over uneven surfaces with ease and quickly regaining composure over bumps. It all feels suitably luxurious.

However, the optional bi-colour 22-inch alloy wheels ($3900) fitted to our test vehicle often catch sharper edges and spoil the ride over poorer surfaces, so you should probably stick to the standard 20-inch rims.

Handling-wise, the X5 xDrive30d does naturally lean into corners during spirited driving when in its Comfort drive mode.

That being said, overall body control is relatively strong for a large SUV, and the Sport drive mode does go some way towards tightening things up, but the fact is, it’s always going to be hard to defy physics.

Meanwhile, the X5 xDrive30d’s electric power steering is not only speed-sensitive, but its weight is adjustable via the aforementioned drive modes.

In Comfort, this set up is well-weighted, with just the right amount of heft, however, change it to Sport and it becomes heavier, which might not be to everyone’s taste. Either way, it’s relatively direct and offers solid levels of feedback.

That said, the X5 xDrive30d’s sheer size is reflected by its 12.6m turning circle, which makes low-speed manoeuvres in tight spaces more challenging. The optional rear-wheel steering ($2250) can help with that, although it wasn’t fitted to our test vehicle.

In terms of straight-line performance, the X5 xDrive30d has a thick wad of maximum torque available early in the rev range, which means its engine’s pulling power is effortless all the way through to the mid-range, even if it can be a little spiky initially.

While peak power is relatively strong, you rarely need to approach the top end to make use of it, because this engine is all about those Newton-metres of torque.

Acceleration is therefore spritely, with the X5 hunkering down and charging off the line with intent when full throttle is applied.

A lot of this is performance is thanks to the transmission’s intuitive calibration and general responsiveness to spontaneous inputs.

Gear changes are quick and smooth, although on occasion they can be a little jerky when decelerating from low speeds to a standstill.

The five drive modes – Eco Pro, Comfort, Sport, Adaptive and Individual – allow the driver to alter engine and transmission settings while on the move, with Sport adding a noticeable edge, but Comfort is what you'll be using 99 per cent of the time.

The transmission’s Sport mode can be summoned at any time, with a flick of the gear selector leading to higher shift points that are complementary to spirited driving.

The Australasian New Car Assessment Program (ANCAP) awarded the X5 xDrive30d its maximum five-star safety rating in 2018.

Advanced driver-assist systems in the X5 xDrive30d extend to autonomous emergency braking with pedestrian and cyclist detection, lane-keep and steering assist, adaptive cruise control with stop and go functionality, traffic-sign recognition, high-beam assist, driver-attention alert, blind-spot monitoring, cross-traffic alert, park and reversing assist, surround-view cameras, front and rear parking sensors, hill-descent control and tyre-pressure monitoring. Yep, there’s not much missing here.

Other standard safety equipment includes seven airbags (dual front, side and curtain plus driver’s knee), anti-skid brakes (ABS), brake assist and the usual electronic stability and traction-control systems.

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).

As with all BMW models, the X5 xDrive30d comes with a three-year/unlimited-kilometre warranty, which is two years behind the premium standard set by Mercedes-Benz, Volvo and Genesis. It also gets three years of roadside assistance. 

The X5 xDrive30d’s service intervals are every 12 months of 15,000km, whichever comes first. Five-year/80,000km capped-price servicing plans start from $2250, or an average of $450 per visit, which is more than reasonable.