Lexus LX vs Lexus GX

What's the difference?

Huge specification in terms of convenience and safety gear are matched by an equally huge range of abilities in this vehicle. As well as rock hopping with the best of them, this is also a phenomenal touring rig and a more-than-capable off-roader. Of course, whether you can see yourself clambering up the side of a muddy creek crossing in $202,000 worth of vehicle is a personal matter, but rest assured, the Lexus will do it if you ask it to.

In the case of the hybrid LX, however, the vehicle now has an extra dimension to cover off, and from what we can see, it does take the efficiency and running costs of the big wagon to a new, better place. Mind you, that may only be the case if diesel continues to cost a dollar-a-litre more than petrol at the bowser.

The shift to petrol power also brings with it a level of mechanical background noise that we’re not entirely sure fits the Lexus legend, while additions such as the camera-based rear-view mirror system seems to be a conversation starter rather than an actual improvement.

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.

In a styling sense, that big, bold, deep grille at the front won’t be to everybody’s liking, but we reckon it’s pretty well matched with the otherwise taut skin of the LX’s body.

Inside, the plush look and feel is the dominant factor, but if you look really closely, there’s a fair bit of generic Lexus stuff on show. Is that a criticism? Hardly. The leather looks and feels luxe and only some hard plastics (such as on the door cappings) belie the car’s LandCruiser origins.

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.

Like many hybrids, cargo capacity takes a bit of a blow. In this case, placement of the battery under the cargo floor means a reduction in luggage capacity from 1109 litres to 899 litres. In the seven-seat variant, capacity is 883 litres with the rearmost row folded flat. The rear seat folds 60:40 and there are good, solid tie-down points in the rear. There’s no under-floor storage, however, apart from a small compartment just behind the rear seat which locates the tools and safety triangle.

The tailgate is powered (if a bit slow in its action) and there are cup-holders atop each suspension tower, clearly a hang-over from the seven-seat variant which is not available in F Sport trim. The cargo blind is a good addition, as is the 1500-Watt power socket in the cargo bay.

In the cabin, there are plenty of grab handles and the side steps give shorter folk a leg up when entering or leaving. Once you’re in, the front seats are terrifically comfortable as well as featuring a massage function on top of the heating and cooling functions. The steering wheel is also heated.

Paddle shifts might seem odd in a vehicle like this, but they are brilliant in off-road situations, although you need to first select manual mode on the shifter to have the paddles hold each gear for more than a few seconds in most of the on-road driving modes.

Speaking of the shifter, Lexus has seen fit to once again reinvent this simple control. You now need to pull the handle towards you and up for Reverse, across and down for Drive while Park remains a separate button even though it looks like just another icon on the lever.

A pair of cup holders live over to the passenger’s side of the centre console, and there are a pair of USB charge ports as well as an HDMI port in the dashboard. But the switches for the power windows are located almost directly under the driver’s interior door pull, forcing some unorthodox wrist geometry.

At least the buttons for the climate control and off-road functions such as diff locks and ride height are, indeed, buttons and not menu items. The simple knob to control the stereo on-off and volume is a great touch, too. So is the cooled centre console under a cover that opens from either side.

The rear seat is big and wide but the high floor dictated by the body-on-frame construction means those with long legs will have their knees bent while ever they’re in the back seat. The seat cushion itself is pretty flat, too, but the backrest does recline through a wide range of angles.

Reading lights, lots of air vents and a full set of climate controls ease the pain of riding in the back, but if you want cup holders, you need to keep the centre rear seat free so the armrest that houses the holders can be lowered and snapped open. Adding to the impression that plenty of thought has gone into the rear seat environment are the pull-up sun blinds on each window. Why don’t all cars have these?

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 hybrid driveline of the vehicle we’re looking at here marks a further expansion of buyer choice when it comes to how their Lexus LX is powered. The twin-turbocharged petrol and diesel variants will continue alongside the newcomer, although you can bet Lexus (and Toyota) will be watching the sales charts closely to see where consumer tastes fall.

The hybrid set-up here starts with the twin-turbocharged 3.4-litre petrol V6 (a lot of people - Toyota included - are calling it a 3.5, but at 3445cc, it’s not) from the Lexus LX600.

But instead of bolting directly to the 10-speed transmission, in this case, there’s a single electric motor and clutch unit sandwiched between the engine and transmission. That means the Lexus retains mechanical four-wheel drive, while the electric motor can provide extra urge for acceleration or towing as well as offering EV-only operation when it’s required (mainly in stop-start traffic).

Crucially, it also means the vehicle retains those traditional off-road qualities of low-range gearing and permanent four-wheel drive. The electric motor also contributes torque to the equation when the driver selects either Rock, Dirt or Deep Snow modes to maintain a steady flow of Newton metres.

The petrol V6 contributes a healthy 305kW and 650Nm to the picture, while the electric motor adds a further 36kW and 250Nm. When all that’s harnessed up, there’s a total of 341kW of power and 790Nm of torque on tap, allowing for a braked towing capacity of 3500kg. It also makes this variant the torquiest Lexus LX ever.

Interestingly, Lexus says the conventional 12-volt starting system and alternator for the petrol engine, means that unit could continue to operate if any part of the EV system failed.

One of the big questions over hybrid drivelines in off-road conditions is what happens if the vehicle suddenly finds itself partly under water. In this case, says Lexus, there are additional waterproofing measures which should prevent any problems mid-creek.

The F Sport grade gets a Torsen (torque-sensing) rear differential and firmer dampers for an overall sportier feel.

At 2780kg, the LX hybrid is heavy, and is at least 100kg more than the LX600 due to the batteries and other hybrid gear.

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. 

Here’s where the hybrid driveline really comes into its own. On paper, at least.

Despite the added kiloWatts and Newton metres, the 700h manages an official fuel consumption figure of 10 litres per 100km. That compares with 11.9/100km for the 305kW LX600, although it’s still more than the 8.9L of the 227kW diesel-powered LX500d.

But the hybrid’s big advantage will come in city and suburban traffic where the stop-start nature of things will enable the driveline to harvest braking energy and turn that back into electricity for the battery.

Our testing showed an average of 11.2 litres per 100km in mixed conditions which blew out to 13.0 litres with more urban running. That’s pretty handy in the context of a vehicle like this and won’t be far from the real-world numbers of the diesel LX.

The Lexus carries 98 litres of petrol, split between one 68-litre tank and a 30-litre sub tank. That should give it a theoretical range of almost 800km, but again, that will depend largely on where and how it’s used.

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.

At low speeds, threading your way through traffic or parking, the LX feels like it needs a lot of real estate. Which makes sense given the 5.1-metre overall length that puts it on par with a lot of dual-cab utes. The width of almost two metres plays into things, too, and reversing down the average driveway will often have the sensors chirping at you constantly.

What’s interesting, though, is the way the Lexus seems to shrink once you’re up and running in a more open setting. Even a winding road reveals a car that is easy to place in corners and seems to feed back lots of the right sort of information in terms of what the wheels are doing and where they’re placed. The result is that you can actually hustle the LX along quite smartly if you need to.

The ride remains composed yet there’s a level of control that helps keep the big, high LX relatively flat through corners and responding sharply to the helm. Even those huge wheels and tyres and their corresponding unsprung mass don’t intrude. It’s a great trick.

Less easy to appreciate, however, is the driveline, specifically the twin-turbo petrol V6. Frankly, it’s just not as refined as we were expecting. I wouldn’t mind betting Lexus has tuned the exhaust system to make the LX sound like there’s a petrol V8 under that heavily sculpted bonnet. And at low revs, it kind of works with a rhythmic, muted, yet guttural sort of bass coming through.

But rev it harder and the engine soon reveals itself to be a V6 with all the secondary vibration and resonance that implies. Simply, this vehicle is neither as smooth nor as quiet as the Lexus brand would suggest and the harder you rev it, the more it descends into NVH (noise, vibration and harshness) territory. The issue is made worse by the fact that the rest of the package is so darn quiet.

Even the stop-start - a technology that is now well understood - doesn’t seem quite as slick as it should be. Taking off from a green light with the petrol engine stopped, the Lexus often produces a small `sonic bump’ from the driveline as the V6 fires into life. It’s felt more than heard. But it’s still puzzling in the context of this make and model.

The transmission, meantime, is as silky as you’d imagine with upshifts and even downshifts that are barely perceptible. It would be nice, though, if the transmission obeyed the paddles a bit more faithfully. As it is, the chosen gear is only held for a few seconds unless you also pull the shift lever into manual mode.

I’ll also take issue with the rear-view mirror that includes a camera view as well as a conventional mirror option. I can see the point of having a camera-view mirror (when the cargo area is piled high, for instance) but I’ve never yet met one that works properly. The problem is that the camera view that pops up on the mirror’s screen is never as faithful as it should be. Also, if you wear glasses to read, you’ll also need them to focus on the image properly. While a conventional mirror has the same depth of field as looking through the windscreen, the camera-generated view does not. Also, when used through a wet rear window in low light, the camera view is borderline useless. This tech clearly has a ways to go.

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.

Lexus offers a five-year, unlimited-kilometre warranty on its vehicles and throws in three years’ worth of subscription to the Lexus Encore owner privileges and benefits program. Those extras include Lexus on Demand, valet parking, roadside assistance and even complimentary access to Qantas airport lounges.

There’s also five years of capped-price servicing available.

As well as the overall five-year/unlimited kilometre warranty, there’s eight years and 160,000km of cover for the hybrid battery. That can be extended to up to 10 years provided the battery is checked for degradation every year after the fifth year.

Servicing for the LX is every six months or 10,000km which is much more frequent than much of the competition, but reflects the heavy-duty nature of the vehicle.

Lexus has about 30 dealerships in Australia, primarily in urban locations, but for many servicing and repair jobs, a Toyota dealership or service centre should be able to handle things on the LandCruiser 300-Series-based LX.

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.