Isuzu NPR vs Lexus GX

What's the difference?

Driving a truck of this size has never been easier than it is with these new Isuzus. Once you’ve worked out how to judge gaps in traffic and have acclimatised to the bulk of a light truck, it’s all pretty straight-forward.

The greater levels of connectivity and safety in this generation of trucks is a big leap on the OH and S front, and there’s no trade-off in terms of the traditional practicalities trucks like these offer.

Our advice would be to option up the suspension driver’s seat and, where possible, look into the independent front suspension, too, as this gives the vehicle a more car-like feel in terms of both steering and ride quality.

Meantime, the option of the ready-to-work packages makes the whole idea of getting into a light truck all the more simple, fuss-free and financially attractive. Which are all things fleet managers around the world can agree on.

Note: CarsGuide attended this event as a guest of the manufacturer, with meals provided.

The new Lexus GX 550 Sports Luxury looks fantastic and has enough mod cons to satisfy a family but it’s not as luxurious as you’d expect from a premium brand and the fuel economy and driving range will turn off some. But if you’re still interested, there’s a lot here that will make you happy and it’s one of the smoothest 4WDs I’ve driven.

While it’s generally agreed that trucks trail cars and utes in terms of safety and connectivity, the latest N-Series trucks are aimed at reversing that trend. Lots of active safety gear has been added to the N-Series in the most recent upgrade and that’s led to a much safer vehicle.

The ability to connect Apple CarPlay and Android devices is also a major bonus this time around.

The other element unique to Isuzu is the ability for customers to order a fully-finished truck, rather than order the basic package from the truck manufacturer and then finding a third-party supplier for the body they need.

Isuzu calls it its ready-to-work option and it spans various types of bodies including a service body, conventional drop-side tray, enclosed van and even a tipper body. As an off-the-shelf alternative to the traditional way of ordering and specifying a truck, it’s a surprise nobody else has done it, although Isuzu’s volumes definitely play a part.

The new GX 550 looks massive and while it shares the same platform as the Toyota LandCruiser 300 series, it doesn't share all of its bulk. They both stand at 1980mm wide but differ on length (5015mm vs 4980mm) and height (1670mm vs 1950mm), respectively.

The new design is fabulously rugged but each body panel looks meticulously crafted and is just the right size. This just means the proportions look right and your eye sort of glides over the big body rather than stopping on any one feature.

But having said that, there are a lot of nice features to focus on, like the long LED headlights and rear strip light, auto-folding side steps, 22-inch alloy wheels and sharply styled rectangular side mirrors.

The tailgate window can also be opened if you need to pop something into the boot but don't want, or have the space, to open the tailgate itself.

The styling takes a minor nose dive once you hit the cabin, though, because it doesn't look as sumptuous as you'd expect in a premium SUV.

I love the utilitarian and military vibe of the vertical dashboard, chunky air vents and relatively small windscreen. It looks great but some trims are plasticky and the touchpoints, while soft, are not Lexus-plush.

However, the technology looks gorgeous with an integrated 14-inch multimedia display and a 12.3-inch digital instrument cluster. The fixed sunroof with its two settings (clear or opaque) is also a lovely feature.

But on a whole, the GX 550's European rivals outclass it with their flashier cabins.

Because they’re made to work first and foremost, the cabins of these 4.5-tonne trucks are roomy and offer plenty of storage space for clipboards, receipt books, Eskies and more.

As a workspace rather than simple transport, plenty of thought has gone into how they function for an eight-hour shift, too, and options like suspension driver’s seats will make a difference.

They’re a bit of a climb up, though, so getting in and out requires at least some measure of dexterity. But once you are in, the view through that huge, panoramic windscreen is fabulous and if you like the seat-height advantage of an SUV, you’ll love an N-Series truck.

Beyond that, the quality of the interior plastics still trails the car and ute world by a margin, and the hard plastic surfaces aren’t great to look at or engage with. By trucks standards, though, they’re on the money.

The cabin of the new GX 550 is fairly practical with plenty of head- and legroom in each row (yep, even the third!). When you first hop in, it can feel a big snug on elbow-room but this feeling quickly dissipates.

Despite a 215mm ground clearance, access is pretty good for the front and middle rows due to the wide door apertures and side-steps. Third row access is a bit awkward for an adult but my eight-year old loved scampering back there this week.

The electric front seats are comfortable with their extra functions and I like the way the massage feature extends to the seat cushion as it limits fatigue on longer journeys. However, you sit on top of them rather sink into them which makes it feel a little trucky at times.

The wide middle row has a bench seat that will be comfortable for kids but an adult might get a sore behind on a long trip. The transmission tunnel also compromises foot room for adults but the seat is wide enough to make use of all three top-tether anchor points (there are ISOFIX mounts too).

It was a little bit of an effort to lift my big booster seat into the back because the GX 550 sits so tall but otherwise, there's plenty of room around a child seat for them not to feel like a sardine.

Individual storage is made up of a glove box that fits an owner's manual, a small shelf in the dashboard and a middle console that doubles as a cool box (mini fridge) and can fit up to four cans or bottles in it.

Each row gets four drinkholders and two USB-C ports but the front also enjoys a 12-volt socket and wireless charging pad. There's a 220V domestic plug port in the boot for larger appliances, too.

It's sometimes awkward to use the wireless charging pad because it's easy for your phone to slide around on it and it quite often disengaged from charging.

My son enjoyed all of the other amenities in the middle row, like the reading lights, climate control, two USB-C ports and retractable sunblinds and I applaud carmakers when they position rear directional air vents in the pillars and/or roof. It just makes it so much easier to cool down sweaty kids!

The 14-inch multimedia display has clear graphics and a responsive touchscreen. The layout is easy enough to get used to after spending some time with it and the sat nav is simple to use.

I like that the sat nav directions can be pulled into the 12.3-inch digital instrument cluster and head-up display.

There is a Lexus connected services app, which you get a three-year subscription to. It's easy to connect to the wireless Apple CarPlay and there is also wireless Android Auto.

The system also has Bluetooth and digital radio, which is a delight to use through the 21-speaker Mark Levinson sound system.

The cabin is rounded out by the well-shaped boot which has a massive 1063L of capacity when the third-row is folded. That's been more than enough for my family's needs this week and my German Shepherd was pretty comfy back there, too. The powered tailgate has a kick-function and there is a full-size spare wheel underneath the car.

The Lexus GX 550 shares the same platform as the recently introduced Toyota Prado but both models are now based on the same 'body-on-frame' platform shared by the beastie Toyota LandCruiser 300 Series. So it's bigger and features a more rigid chassis than before.

Surprisingly, that hasn't translated to a massive price tag for the GX 550 and you can pick up the flagship grade on test for this review for $128,200, MSRP.

Which sounds inexpensive when you compare it to the BMW X7 xDrive 40i M Sport which is priced from $171,300 MSRP but the Land Rover Defender 110 P400 X-Dynamic HSE is a lot closer at $128,815 MSRP.

The only issue here is that shared platform, because while they don't share the same powertrain, the flagship Toyota Prado Kakadu ($99,990 MSRP) is still almost $30K more affordable and boasts a similar equipment list. So, ask yourself, is it the brand and engine you're after or the new good looks?

The standard equipment is well-rounded with a 14-inch touchscreen media display with satellite navigation and wireless Apple CarPlay and Android Auto.

A fully digital 12.3-inch instrument cluster, colour head-up display, three-zone climate control and a 21-speaker Mark Levinson sound system round out multimedia requirements.

Other technology includes a digital rear view mirror, two USB-C ports in each row, a 12-volt socket, a 220-volt domestic outlet and a wireless charging pad.

There are two particularly handy features for families, the 'cool box' (basically a mini fridge) middle console and rear retractable sun-blinds.

The fixed panoramic sunroof features two settings allowing you to make it clear or opaque. The electric front seats feature heat, ventilation and massage functions and the rear outboard seats are heated as well. The third row electrically adjusts and there are multiple buttons throughout the car to access this feature.

Upgraded leather-accented upholstery is standard in the flagship grade and is available in three combinations. The Sports Luxury also features 22-inch alloy wheels, a full-size spare wheel and a powered tailgate with kick-function.

The base engine for the N-Series trucks is a 3.0-litre turbo-diesel with 110kW of power and 375Nm of torque. Available across the short and mid-wheelbase N-Series models, the 3.0-litre engine is more or less the same engine as seen in the Isuzu D-Max ute range.

As such, it has a good reputation for durability and although there are some turbocharger and tuning changes compared with the D-Max, the basic engine is very similar.

There’s also a much more heavy-duty, truck-like engine option. That is also a four-cylinder unit, but with a massive 5.2 litres of capacity, it’s a real statement of intent. Although power is only marginally more than the 3.0-litre engine, at 114kW, torque is the big winner with 419Nm at just 1600rpm.

Typically fitted to N-Series models with the wider cabin, the 5.2-litre engine also shifts the GCM up a gear to 9000kg from 8000kg. The braked towing limit of the bigger-engined truck also jumps to 4500kg (from 4000kg).

The 3.0L trucks are fitted with either a conventional five-speed manual gearbox or a robotised six-speed manual (which operates like an automatic and is driven with just two pedals). The bigger engined versions have a choice of six-speed manual or six-speed robotised manual.

All GX 550 grades share the same 3.5L V6 twin turbo-petrol engine which produces up to 260kW of power and 650Nm of torque.

This 4WD has high- and low-gearing, as well as a bunch of driving modes to suit most occasions, like 'Eco', 'Comfort', 'Sport' and 'Sport+'.

The 10-speed automatic transmission shifts through its gears smoothly and it always feels like it's engaged in the right gear. Which isn't always the case for a big SUV!

The Sports Luxury is fitted with a towing hitch and cover but unlike the base Sports grade which has a 3.5-tonne braked towing capacity, this model only has a 3130kg capacity which might not appeal to families with big toys to tow. 

The first thing to know is that vehicles in this weight class – unlike passenger cars and dual-cab utes - don’t have to undergo an official government test for fuel economy. So there’s no simple comparison to be made here.

Also, there are simply too many variables in truck fuel economy to make definitive statements. Unlike cars which are usually loaded to within a few hundred kilograms trip-to-trip, a truck’s mass can vary enormously from empty to fully loaded (and with what) and those circumstances will vary nearly every day.

Then there’s the issue of what body is fitted to the chassis. Obviously, a high van body will contribute a lot more drag at highway speeds than a low-line tray body.

With all that in mind, it’s impossible to generalise although you can expect fuel economy to increase the more you put on board or hitch to the tow-bar.

It’s also worth mentioning that Isuzu’s N-Series engines meet Euro 5 emissions standard for diesel engines. N-Series trucks have fuel tanks ranging from 75 to 100 litres.

I didn’t have high hopes for fuel economy because the official combined (urban/extra-urban cycle figure is a hefty 12.3L/100km but after mostly open-road driving, with some urban stuff mixed in, my real-world average came in at 11.8L.100km! This figure is based on my actual km travelled (358km) and litres of fuel used (42.41L).

While I’m surprised by the fuel usage result, I wouldn’t say this car has good fuel economy compared to its diesel-powered counterparts but it’s not terrible!

The GX 550 has a relatively small fuel tank compared to its Toyota cousins at 80L and based on the combined fuel cycle, you’ll get a theoretical driving range of up to 650km.

Not all that great. Not for a big family mover and not if you’re typically driving in the city, where fuel usage will be a lot higher.

The GX 550 only accepts premium unleaded petrol (95 RON), too.

Although the sheer size of the Isuzu can be a bit daunting at first, once you’re in with the excellent side mirrors adjusted, it’s vastly less confronting.

The view to the front and sides is brilliant thanks to the deep glass and the high-and-mighty seating position is terrific for finding the corners of the vehicle, too.

You still need to understand that the length of the truck imposes some unconventional lines through corners, and leaving plenty of space between yourself and the insides of corners soon becomes second nature.

The seating position itself offers up a classic truck-like set-up with an upright seat-back and an almost flat steering wheel. It sounds terrible to car drivers but it’s not. It’s actually very comfortable for long stints at the helm.

Ride quality is compromised to an extent by the N-Series’ role as a hauler (and spring rates to suit that role) but the optional independent front suspension makes it a lot more comfy.

And even with the more traditional front suspension fitted, the fast steering makes the truck a lot more manoeuvrable than you might have imagined.

The biggest gripe for us was the transmission, specifically, the optional robotised manual six-speed. This unit really does hark back to the very early days of the technology (before the dual-clutch layout arrived) and the shifts are slow and stilted with a distinct lurch as the transmission swaps gears and engages the clutch.

You can improve things by lifting off the accelerator to initiate each shift, but fundamentally, modern dual-clutch transmissions do a much better job.

The other issue will be for drivers who like to left-foot brake in any vehicle with two pedals.

Unfortunately for them, the Isuzu places both pedals to the right of the big, almost vertical steering column with neatly cleaves the driver’s footwell in two, making left-foot braking impossible.

Oh my goodness the Sports Luxury is a masterclass on 4WD refinement! You never feel the bulk or weight of this massive SUV when you’re driving it. The power delivery is effortless and there’s lots of grunt available when you hit hills.

The handling is also very good with responsive steering and enough road feedback as a driver to make you feel comfortable with what the car is doing. There is some roll in corners but it can tackle more corners at speed than I thought it would. 

The high driving position makes me feel like I can see a long way ahead yet while visibility is mostly good, it can be compromised when you have the side window shades and the third row headrests up. Which is why I love the digital rear view mirror.

Overall, ride comfort is good with forgiving suspension and low cabin noise, even at higher speeds. It’s pretty easy to chat with all rows and there’s not a lot of engine noise which adds to the refinement. I do like hearing a V6 rumble but that’s just a personal preference. 

I was a little worried about hitting my local Westfield car park but this is a nimble SUV to manoeuvre and parking it is a breeze with the 360-degree camera system and parking sensors. 

The new GX 550 hasn’t been tested by ANCAP and is unrated but its cousin, the Toyota Prado, which shares the same platform just achieved a maximum five-star rating from assessment in 2024. It's fair to expect a good result for this model.

Overall, the Sports Luxury has a long list of standard safety equipment and features nine airbags which is good for a family SUV. 

Safety equipment includes adaptive cruise control, lane departure alert, lane keeping aid, traffic sign recognition, emergency steering assist, driver monitoring, safe exit assist, emergency call functionality, blind-spot monitoring, rear cross-traffic alert and tyre pressure monitoring.

The GX 550 has autonomous emergency braking (AEB) with pedestrian, cyclist, motorcyclist and junction turning assist.

Because trucks are designed to be used day in, day out, the warranty reflects that. In this case, it’s six years and 250,000km of factory cover for any two-wheel drive N-Series.

The four-wheel-drive variants are, due to the tasks they’re usually put to, covered for three years or 150,000km.

Isuzu also provides six years of roadside assistance. There’s also capped-price servicing on a pay-up-front basis although the cost varies between models. 

Lexus offers the GX 550 with a five-year/unlimited km warranty, which is fairly standard compared to its Euro rivals.

You get five years capped-priced servicing which costs $5950 but the servicing schedule is a bit of a bear at every six months or 10,000km, whichever occurs first.