Porsche Cayenne vs Ram 2500

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.

The RAM 2500 Laramie 4x4 is designed primarily as an extreme duty tow vehicle, and in that role it excels. So if you've got something really big to tow like a multi-axle caravan, horse float, boat trailer or other type of trailer up to 7.0 tonnes, you'd be hard pressed to find a more effortless and luxurious way to move it than with one of these jiggers.

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.

With a granite-crushing 3577kg kerb weight (by comparison Ford's top-shelf Ranger Wildtrak dual cab ute is 'only' 2250kg) the RAM 2500's architecture is tailor-made for heavy towing with a massive ladder frame chassis and expansive 3797mm wheelbase (Ranger 3220mm) providing rock-solid towing stability.

Front and rear suspension is via multi-link coil-sprung live axles (LSD rear), with four wheel disc brakes inside 18 x 8.0-inch polished alloy wheels and Michelin LT265/70R18E all-purpose tyres. Plus there's a full size spare.

ASV prefers to use the word 're-manufacture' rather than 'conversion' when describing its extensive body-off-frame RHD engineering process. We can vouch for that, having inspected the company's ISO quality-certified Melbourne production line, which turns out about 40 vehicles a month and employs 28 full-time staff in a dedicated factory right next door to HSV in Clayton. The end result is OEM standards in parts supply, engineering quality, standard of finish and driving performance.

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 RAM 2500's payload capacity of 913kg might seem conservative compared to smaller dual cab utes with one-tonne payloads, but drill down further into its huge tow ratings and that 913kg (say 5-6 occupants and all their gear) looks mighty impressive.

Why? Because on a 50mm ball it can tow up to 3500kg with a full payload (7990kg gross combined mass), on a 70mm ball it can tow up to 4500kg with a full payload (8990kg GCM) and with a gooseneck and ring connection (aka pintle) it can tow up to 6989kg – and still with a full payload. That's a whopping 11,479kg GCM or just under 11.5 tonnes. Try doing that with a one-tonne ute!

The heart of this power giant is a Cummins 6.7 litre inline six cylinder turbo-diesel with 276kW at 2800rpm and a towering 1084Nm of torque at only 1600rpm.

The big cargo box, which is protected by a spray-in bedliner, is 511mm deep with a load floor that's 1939mm long and 1687mm wide with 1295mm between the wheel arches. That means it can take a standard 1160mm x 1160mm pallet, or a couple of dirt bikes with the tailgate up and heaps of room left for your gear and tools.

The cabin offers numerous storage options with bottle holders and twin storage pockets in the front doors, a huge centre console (which pivots into an upright position to serve as the centre seat backrest when required) with internal storage and three more cup/bottle holders, twin glove box compartments, rear door storage pockets, a central floor-mounted twin bottle holder and deep in-floor storage bins hidden under the carpet mats on either side. The rear seat can also be quickly reconfigured into a convenient flat-floored cargo area when required.

ASV offers a choice of 2500 and 3500 (larger GVM) models, with the 2500 attracting the vast majority of local sales as it has a higher peak tow rating and can be driven with a standard driver's licence.

Our test vehicle was the RAM 2500 Laramie Dual Cab 4x4 which starts at $139,500. That's a lot of money but not unreasonable when compared to the $120,000-plus you'll pay for Toyota's local towing hero, the 200 Series Land Cruiser in premium Sahara spec, with 'only' a 3.5 tonne tow rating.

The ASV RAM is supplied in top-shelf Laramie grade which includes a sumptuous six-seater leather interior with more features than you could ask for. These include all the usuals like multimedia interface, dual-zone climate control, sunroof, sliding rear window and power everything, plus some not-so-usuals like remote starting using the key-fob (great on cold mornings before you leave the house), a high-mount cargo camera to keep an eye on your payload, a heated steering wheel and power adjustable pedals to name a few on a very long list.

Further proof of its intended role in life is a seven-pin wiring harness, heavy duty receiver hitch and electric trailer brake control. In simple terms, it's fully loaded.

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.

The heart of this power giant is a Cummins 6.7 litre inline six cylinder turbo-diesel with 276kW at 2800rpm and - most importantly in this context – a towering 1084Nm of torque at only 1600rpm. It's also equipped with a very effective exhaust brake with a choice of settings.

Chrysler's equally robust and well-proven (68RFE) six-speed automatic transmission with driver-adaptive shifting is purpose-built for extreme duty. The 4x4 drivetrain features a dual-range Borg Warner transfer case with electronic shift-on-the-fly control and a 2.64:1 low range reduction, which with the 3.42:1 final drive results in a 29.2:1 crawl ratio. Ideal for towing a heavy load out of a rugged worksite or a campground turned boggy by overnight rain.

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.

We conducted two tests based on fuel bowser and trip meter readings. The first, which mostly comprised heavy towing, resulted in 20.14L/100km compared to 16.6 on its instrument display. The second was a mix of city, suburban and highway driving with no towing which returned 15.08 litres/100km compared to 14.0 displayed.

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 strong whiff of leather is a nice way to start each journey. The full-length side steps and grab handles are required for every climb in and out of the elevated cabin which provides a commanding view of the world, even though the outer edges of its vast bonnet and front mudguards disappear from view.

The front seats are wide and comfortable with good lateral support and rear seat passengers have generous head, shoulder and legroom as you would expect. Although it feels huge when you first climb aboard, the RAM starts to shrink around you the more you drive it, aided by front and rear parking sensors and a reversing camera for tight parking situations (which is most of the time).

Its height of 1974mm (Ranger 1848mm) will still clear most undercover car parks (usually 2100mm limit) and its 2009mm width is only 150mm wider than a Ranger, so it will also fit within most car parking spaces. The biggest parking handicap is its oil tanker-like 6030mm length which is 675mm longer than the Ranger, so you need plenty of room for reversing.

On the highway it has a remarkably quiet cabin environment thanks to substantial ASV-added sound insulation, low wind noise and minimal tyre roar.

Ride quality when empty is generally good, although you do notice the firmness of the heavy duty spring rates over larger bumps. Acceleration is spirited, too, with an unbridled 1084Nm shoving you in the back and the steering is nicely weighted and relatively direct for an old-school steering box set-up.

The quartet of disc brakes, though, do not have the bite relative to pedal effort one might expect. ASV engineers claim it's the result of pad compounds which have to withstand the heat of up to 7.0 tonne towing loads, so they tend to be relatively hard.

On the highway it has a remarkably quiet cabin environment thanks to substantial ASV-added sound insulation, low wind noise and minimal tyre roar. At 100km/h with no payload, the 6.7 litre Cummins barely ticked over at 1400rpm and that hardly changed when we hooked up a dual axle New Age Caravan with a 3270kg tare weight.

Given that was less than half of its peak towing capacity, the big RAM barely noticed it was there. The engine's massive 1084Nm of torque at only 1600rpm was most impressive on long gradual climbs, allowing the truck and caravan combo to squash each hill in top gear with minimal throttle.

Each time you ease off the accelerator, too, the exhaust brake provides more than enough retardation (and Kenworth sound effects) to ensure you rarely need to push the brake pedal. And when you do, the electric trailer brake control provides powerful and sure-footed stopping power. The door mirrors were also wide enough to see along each side of the van and approaching rear traffic.

Currently no ANCAP rating but ASV subjected one to a full frontal barrier crash under Australian Design Rule 69/00 which it passed, thereby becoming the first locally converted (oops, re-manufactured) vehicle to be crash tested.

It's loaded with passive and active safety features including driver and front passenger airbags, front seat-mounted side airbags and front and rear side curtain airbags, electronic stability control, front and rear parking sensors, tyre pressure monitoring display and reversing camera. The rear seat has three headrests and three lap-sash belts plus anchorage points to secure up to three child seats.

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).

RAM Trucks Australia provides a three year/100,000km warranty plus national Roadside Assistance for the duration of the warranty period.

Service intervals of six months/12,000km whichever comes first. ASV has a 30-strong Australian dealership network providing full sales and after-sales service.