Lexus GX vs Lexus NX

What's the difference?

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.

The NX 450h+ Luxury combines high build quality and upmarket looks with plug-in hybrid convenience/performance/economy and numerous luxury appointments. It’s a competent all-rounder that's difficult to fault and clearly meets the needs of many prestige mid-size SUV buyers.

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.

The exterior is a sculptured blend of sharp creases and flowing curves which create a sporty and sophisticated appearance that clearly appeals to many buyers.

The interior looks and feels about as spacious and airy as you could realistically expect in a mid-sized SUV, which is enhanced with the roof open and sunshine pouring in.

The boldly contrasting two-tone grey and camel interior trim in our test vehicle adds to its visual appeal although we suspect such a bold colour choice could also be a stain magnet in everyday use, particularly for young families with lots of sticky kids’ stuff onboard.

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.

Its compact dimensions of 4660mm length, 1865mm width and 1660mm height make the usual driving chores in congested urban settings, particularly tight inner-city streets and parking spaces, much easier than a full-size SUV.

With its 2050kg kerb weight and 2540kg GVM, it has a load capacity of 490kg of which up to 75kg can be carried on the roof rails using approved racks.

While almost half a tonne of load capacity may seem ample, keep in mind that the combined weight of five large adults could reach that limit before you could start loading their luggage.

It’s also rated to tow up to 1000kg of braked trailer, which would be ideal for hauling small trailers with a recreational focus like fold-out campers, jet-skis, trail bikes etc. However, Lexus does not publish a GCM figure, so for weekend escapees we don’t know how much it can legally carry and tow at the same time.

There’s more than adequate space for the driver and front passenger, along with storage that includes a bottle-holder and bin in each door, overhead glasses holder and a single glove box.

The centre console has two cupholders and a deep box with padded lid that doubles as a comfy elbow rest. You’ll also find a quartet of USB ports, a 12V socket and wireless phone charging pad.

The rear bench seat is surprisingly accommodating for tall people, given I’m 186cm and when seated behind the driver’s seat set in my position I still have sufficient knee clearance and headroom.

However, with three up, those in the centre must compete for shoulder space plus have their feet either side of the transmission tunnel and knees together between the front seat backrests. So, three adults is okay for short trips but should be capped at two for longer drives.

Rear passenger storage includes a bottle-holder and bin in each door, pockets on both front seat backrests and two cupholders with the centre seat backrest folded forward. The rear of the centre console has adjustable air vents, rear seat heating controls, another 12V socket and a pair of USB ports.

The power tailgate can open by waving your foot under the rear bumper (useful when hands are full) to gain access to the rear luggage area, which provides numerous internal hooks for securing cargo straps or nets plus underfloor storage for the charging cables and more.

This luggage area offers up to 520 litres (more than half a cubic metre) of load volume with the rear seat upright. It expands into what is effectively a small van when the rear seat is folded flat, which can carry everything from a mountain bike to flatpack furniture.

Our test vehicle is the NX 450h+ Luxury (launched late 2025) which sits one rung below the premium 450h+ F Sport on the model ladder. Even though they share the same PHEV all-wheel drive (AWD) underpinnings, the Luxury’s emphasis on providing more affordable luxury at the highest level is reflected in its list price of $84,500, before on-road costs, which is $11,500 less than its F-Sport sibling. Our example is finished in optional 'Graphite Black' prestige paint available at extra cost.

As you’d expect there are plenty of items on the standard equipment list including 18-inch alloy wheels with 235/60 R18 tyres and an inflator/repair kit (no spare), heated door mirrors, tilt-and-slide moonroof, a rear spoiler, roof rails and LED headlights/DRLs to name a few.

Step inside using the smart entry and start function and drivers are treated to luxuries like front seat heating/ventilation with 12-way power adjustment (eight-way passenger), a heated steering wheel with paddle shifters and power height/reach adjustment, digital multi-information display, an electric parking brake, traffic sign recognition, tyre pressure monitoring and active parking aids.

There’s also outer rear seat heating, dual-zone climate control, wireless phone charging, multiple USB ports, 10-speaker premium sound, a 14-inch multimedia touchscreen with multiple connectivity including wireless Apple CarPlay/Android Auto and lots more.

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 sophisticated PHEV drivetrain with electronic AWD comprises a 2.5-litre four-cylinder petrol engine that delivers 136kW of power and 227Nm of torque to the front wheels through a Continuously Variable Transmission (CVT).

There’s also electric motors front and rear, fed by an 18.1kWh lithium-ion traction battery that can provide limited electric-only driving range.

The front electric motor, which assists with driving the front wheels through the CVT, produces 134kW/270Nm while a smaller one exclusively drives the rear wheels with 40kW/121Nm. Although the combined output from these three power sources is 310kW, Lexus claims a total system output of only 227kW to optimise efficiency and reliability.

The petrol engine and electric motor outputs are electronically synchronised and traction is continuously monitored to automatically vary the amount of power being sent to the front or rear wheels to optimise stability and traction in all conditions.

There’s also a choice of drive modes comprising 'Normal', 'Sport' and 'Eco' and paddles on the steering wheel allow manual shifting of the CVT 'ratios' for a more engaging drive, or to increase the regenerative braking effect (like using lower ratios on descents etc).

Several operational modes can also be selected including electric-only driving (we covered 60km on one full charge and 56km on another) and two modes of hybrid driving, plus battery charging while driving courtesy of the petrol engine which during our test charged the battery from near zero to 100 per cent in 56km.

There’s also external plug-in charging of course. At home we used the three-pin domestic wall socket compatible 10A charger/AC Type 2 cable supplied with the vehicle, which took about six hours (at a tiny 2.3kW) to charge from 35-100 per cent.

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.

Lexus claims average combined consumption of only 1.3L/100km, achieved in ideal lab conditions which is largely irrelevant. When we stopped to refuel after 424km of real-world testing, which included our usual mix of suburban, city and highway driving and switching between the different modes (including 116km of electric-only driving), the dash display was showing 5.7L/100km.

That was close to our own figure of 5.4 calculated from fuel bowser and tripmeter readings, so based on our test consumption and depending on the mix of drive modes used, you could expect a realistic driving range of up to 1000km from its 55-litre tank which prefers 95RON premium petrol.

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 cabin is what you might call ‘cosy’ for tall people like me (186cm) but there’s still adequate room to find a comfortable driving position.

The ride quality is noticeably firm, which contributes to its sporty feel. The steering is nicely weighted with good response and braking is reassuringly strong.

Acceleration in full-electric and hybrid modes is brisk but not exceptional and about what you’d expect from this powertrain, which engages the rear electric motor for standing starts and other situations to ensure all-wheel drive traction is being deployed when you need it most.

We sampled the different drive modes, with 'Sport' providing a more engaging feel (particularly when manual shifting using the paddle shifters), 'Eco' producing a more subdued response to optimise range and the default 'Normal' providing a pleasant compromise.

Even so, despite its technical wizardry and generous choice of driver preferences, we reckon most daily driving owners would simply plug-in and charge each night, start off in electric-only mode and if needed continue in ‘Normal’ hybrid mode.

The NX has a maximum five-star ANCAP rating (awarded 2022), eight airbags and a suite of active safety features including AEB with pedestrian and daytime cyclist/motorcycle detection, steering assist, lane-keeping, safe exit assist, rear cross traffic alert, blind-spot monitoring, traffic sign recognition, LED DRLs, tyre pressure warning and lots more. The rear seat is equipped with two ISOFIX child seat anchorages and three top tethers.

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.

Comes standard with a five years/unlimited km warranty. Same applies to the lithium-ion traction battery, which is eligible for additional warranty coverage of up to five years (so 10 years in total) based on annual inspections.

Scheduled servicing is every 12 months/15,000km, whichever occurs first. Capped pricing, which applies to the first five scheduled services up to five years/75,000km, totals $3225 or an average of $645 per service.