Infiniti QX80 vs Lexus LX600

What's the difference?

The petrol-only QX80, really a Y62 Patrol with shedloads of bling, is a curious beast; a big, bold status-boosting premium SUV, which is much better suited to the US and Middle East markets than ours. However, it has a real premium feel, is very smooth to drive and the exterior and interior changes have improved what has so far been a divisive model for a brand with a small but growing fanbase here. Infiniti sold 83 of the previous QX80 in 2017 and is hoping to move 100 of these new ones in 2018; they have their work cut out for them, but if brand confidence is worth a few sales, who knows, they might even top the ton.

There's absolutely no doubting the new LX's off-road credentials, nor the fact that it takes luxury SUVs to new heights in the four-seat Ultra Luxury model. Do you need a massaging chair and a foot-stool to get to your camping site? Probably not, but globally, there's a distinct market for that sort of decadence.

Closer to the other end of the LX line-up, however, there's a fair bit of cross-over in price and luxury terms with the Lexus' close cousin, the Toyota LandCruiser 300 Series. That suggests there might be a LandCruiser that will do the same job for a little less money and, if that's the case, then the LX loses a little relevance, particularly the petrol-engined version here in Australia. Until, that is, you take into account buyers for whom the Lexus badge infers the bank-vault solidity and prestige that the brand has worked so hard to establish. Which is another way of saying; it all comes down to where you stand on the politics of envy.

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

The bulk of the facelifted QX80’s design changes have been to the exterior and include, most noticeably, new LED headlights with a redesigned, sleeker but more aggressive front end than its predecessor’s softer, more rounded curves.

The new QX80’s bonnet is 20mm higher than before and has been extended 90mm; the side steps have been stretched 20mm wider, and the power tailgate has been re-designed to include sharper, thinner, rear LED taillights and the bumper is visually wider.

The whole body has a higher visual centre of gravity, with this latest raft of design shifts giving the SUV a taller, broader, wider and more angular overall appearance.

The interior includes a bigger, chunkier redesigned centre and rear console and those aforementioned premium touches, such as leather-wrapped heated steering wheel, updated upholstery-stitching, semi-aniline quilted leather patterning on door panels and seats, as well as its stainless-steel sill plates, all add to the premium feel.

The QX80 looks better than it did but, as the previous one was pretty hard on the eyes, the 2018 version may still polarise opinion.

Perhaps the most left-field design element is the way the LX can, depending on trim level, be configured in terms of its seating. In the past, we’ve seen plenty of SUVs available with a choice of five- or seven-seat layouts, but the LX is the first time we’ve seen seating choices range from seven- to five- to four-seat layouts. If nothing else, it illustrates the breadth of applications a modern luxury SUV is expected to cover.

Those who use their four-wheel drive SUVs off-road will also note the shift back to six-stud wheel hubs. Toyota’s (and Lexus’) move to five-stud wheels a few years ago suddenly made the vehicle’s wheels incompatible with owner’s existing caravans and trailers.

The new LX has also become a committed subscriber to the engine-downsizing theory of modern vehicle design. While the previous model was available with a 4.5-litre turbo-diesel and a massive 5.7-litre petrol, the new engine capacities of 3.3 litres for the diesel and 3.5 litres for the petrol represent major philosophy changes. Both the new engines are now V6s, rather than the previous V8 layouts.

And to give the new car a James Bond moment, all models bar the entry-level version feature a fingerprint sensor to control the starter button function. Q would be pleased.

The QX80 is a big unit – 5340mm long (with a 3075mm wheelbase), 2265mm wide and 1945mm high – and, when you’re seated inside it, it feels like Infiniti designers and engineers must have worked hard to maximise the space afforded them for driver and passengers without seeming to have sacrificed any style or comfort.

And that big open space inside the cabin is easy to get comfortable in. There are soft-touch surfaces everywhere – door panels, arm rests, centre-console edging – and the seats are unsurprisingly soft and supportive but tend towards slippery when there are quick changes in speed or direction, or when tackling steep downhills off-road. (It was fun to watch front-seat passengers slip-slide around inside during the 4WD loop)

If you’re up-front you’re well catered for; big glovebox; overhead sunglasses storage; the centre console now has a roomy smartphone storage area; the twin cupholders have been upsized to cop two 1.3-litre cups with handles (up from one 1.3-litre cup and a 950ml container); the USB port has been moved to the other side of the centre console so it’s easier to get to; the storage area under the front passenger arm-rest is now a 5.4-litre compartment, able to hold up to three upright 1.0-litre bottles or tablet devices.

There are nine cupholders and two bottle-holders in total in the QX80.

There’s a sunroof if you get the urge for natural light from above.

Second-row passengers now get 8.0-inch entertainment screens (up from 7.0-inch) and two additional USB ports.

The tip-up second row seats are easy enough to operate and the third row is power 60/40 split-fold-to-flat and reclining.

The QX80 is available with both seven- and eight-seat configurations, with the back seat in a two- or three-seat formation.

There is a 12V outlet in the cargo area.

The practicality of each variant of the new LX is dependent entirely on how many people you need to move. The base-model version has seven seats with a two-three-two layout, while the Sport Luxury and F Sport feature five conventional seats in two rows.

The Ultra Luxury’s four individual seats obviously make it the variant of choice for the buyer who doesn’t need the extra seats, but clearly limit its appeal for families. But if luxury is your aim, the rear passenger seat in particular is the one to be in as it can be configured to offer up to a metre of legroom and even features a footrest when the front passenger’s seat is moved all the way forward. Both rear seats are also heated and cooled and reclinable to an angle that NASA has calculated offers the maximum support for the human body.

Vents in the rear seat area allow for an air-shower (of cool air over the passengers) or an air-curtain (a blanket of warm air at shoulder height).

The seven-seat versions have a third row of seats that folds flat into the floor (a major improvement over the old fold-up third row) and the second row folds and tumbles into the footwell. There’s a 220-volt outlet in the luggage compartment, too.

Cargo space is slightly less than the old model, but with second and third row seats folded, the LX has cargo space of up to 1871L.

The single-piece tailgate of the new Lexus won’t win as many friends as the old, split tailgate design which formed an impromptu kitchen bench or covered picnic seat. But the single rubber seal of the new design may be an advantage in keeping dust out on outback roads.

Much has been made of the Toyota LandCruiser’s $90K starting price in LC300 form, so it will come as no surprise to learn the new LX is likewise bold when it comes to the sticker on the windscreen.

The range kicks off in seven-seat form with the entry level LX600 (petrol) and LX500d (diesel) priced at $152,300 and $148,800 respectively. Of course, at these price points, entry-level is a relative term, and the list of standard features is a long one, indeed.

Lexus has gone for a tech-heavy look and feel here, with a 12.3-inch main display, a 7.0-inch lower screen as well as 8.0-inch multi-function display screen and even a colour head-up display for the driver. Lexus’ latest generation multi-media system is used, but may require some familiarisation for some owners.

The entry-level car also gets 20-inch alloy wheels, heated and powered front seats, leather-accented upholstery, a premium 25-speaker stereo system, LED headlights and active height control of the suspension via hydraulically-adjustable dampers.

Lexus has also fitted 'Multi-Terrain Select' and 'Multi-Terrain Monitor 2' to allow for different types of terrain and grip conditions as well as giving the driver a 360-dgeree camera’s-eye view of the track and the vehicle crossing it.

If that’s not enough, Lexus also offers what it calls an 'Enhancement Pack' which adds 22-inch alloy wheels, a sunroof and a kick-sensor tailgate for an extra $5500.

The next step up the LX ladder is the Sports Luxury model with a price-tag of $165,800.

For the extra money, you get a premium leather covering for the seats, and the front seats become heated and ventilated. There’s also a heated steering wheel, a cool box (much appreciated in Australia) a split rear-seat entertainment system and specific trim including timber veneer.

The new F Sport is next and adds not just more equipment but more capacity to the car’s off-road aspirations. That’s down to a Torsen rear differential which is torque-sensing in the way it distributes drive to each rear tyre, as well as performance dampers at each corner.

Dark exterior accents and a mesh grille help justify the F sport’s sticker of $171,800, as do interior touches such as seats with extra bolstering and some aluminium trim accents.

Which brings us to the headline act, the Ultra Luxury, which represents a huge price jump to $210,800. As well as extra equipment such as a rear touchscreen for climate control, wireless device charging, the Ultra Luxury is designed as a vehicle where the owner is more likely to be in the rear seat rather than the driver’s seat.

A strict four-seater, the vehicle has a pair of plush rear bucket seats (Lexus calls them captain’s chairs) which recline a full 48 degrees and feature a massage function. The passenger’s rear seat even runs to an ottoman and the entire cabin is trimmed in plush, quilted leather. Surely, with this layout, Lexus has achieved peak oligarch.

The previous generation’s 5.6-litre V8 petrol engine (298kW@5800rpm and 560Nm@4000rpm) remains, as does the seven-speed automatic transmission with adaptive shift control. It also has Infiniti’s all-mode 4WD system, which offers Auto, 4WD High and 4WD Low settings and it has terrain appropriate modes (sand, snow, rocks) able to be dialled in.

While the Toyota LandCruiser 300 Series is a diesel-only proposition, the Lexus LX takes a broader view of what its buyers will want in such a vehicle.

As a result, there’s a choice of petrol or diesel power for the LX range, with both engines covering all variants apart from one. To add weight to the theory that the Ultra Luxury model is for people for whom fuel costs really don’t matter, it’s available only as a petrol vehicle.

The turbo-diesel engine is the 3.3-litre V6 twin-turbo unit we see in the 300 Series. It’s unusual in that it uses hot-side-in technology where the exhaust system and turbochargers live inside the vee of the engine, rather than hanging off each side as is much more common. Lexus claims greater efficiency from this layout with less plumbing between the cylinder head and turbo units as well as a more compact design.

Outputs for the turbo-diesel are 227kW of power, with an impressive 700Nm of torque produced anywhere between 1600 and 2600rpm, which is where the engine will spend most of its operating life.

The petrol engine is also a V6 and also twin-turbocharged. It measures 3.5 litres and, again, features a design that allows a smaller capacity engine to exceed the outputs of the physically larger, previous model. To that extent, it makes 305kW of power and 650Nm of torque; both impressive figures.

There’s only one transmission available on the LX, and that’s a 10-speed conventional automatic. To compliment that rugged, ladder-chassis design, the LX also has a transfer-case with proper off-road gear ratios. This is what gives the vehicle its rock-crawling and river-crossing abilities, while permanent four-wheel drive and the Multi-Terrain Select system mean no-fuss operation.

The QX80 is claimed to use 14.8L/100km. We reckon that fuel-consumption figure is very optimistic and if QX80 owners are partial to towing boats – as Infiniti reckons they are – or if they tackle some 4WDing, then that figure is going to climb much higher quite swiftly.

Much has been made of the new LandCruiser’s fuel-tank reduction to its new total of 110 litres. The LX follows suit with an 80-litre main tank and 30-litre auxiliary tank, but it’s worth remembering the improved efficiency of the new drivelines will maintain the range to a useful total. The base-model diesel version also misses out of the second tank for an 80-litre total.

Toyota claims a combined figure of 8.9 litres per 100km for the diesel and 12.1 litres for the petrol. On the open road, both variants will get pretty close to those targets (even though they’re a combined urban-highway figure) so the touring range remains useful and better than 1000km for the turbo-diesel with the twin tanks.

In the world of luxury SUVs big is king and this thing is definitely on the chunky side of big, but it doesn’t often feel too cumbersome for its own good, or too bulky to steer in and out of Melbourne’s bustling morning traffic with precision.

During this event, we did a fair chunk of driving – highway, country roads, gravel roads and a decent bit of 4WDing – and, surprise, surprise, it did pretty well, especially when things of this ilk usually exhibit the ride and handling of an old poorly-sprung couch on wheels.

It did, however, feel top-heavy at times and revealed substantial body-roll when pushed around corners at speed or even during some sections of slow, bouncy off-roading, so I’d be reluctant to experience what it would be like without hydraulic body motion control. However, we were willing to forgive it any rocking-and-rolling when that healthy V8 growl kicked in as we gave it the boot.

The 22-inch tyre-and-wheel combination is not the way I’d go if I was going to use the QX80 for any off-road forays but, having said that, we did fine on them, at road tyre pressures, over a decent off-road loop.
It has 246mm of ground clearance and 24.2 (approach), 24.5 (departure) and 23.6 (ramp-over) angles.

The QX80 has coil springs all-round and it was only ever caught out when it thumped through a couple of surprise potholes along a dirt road.

This Infiniti model has a claimed tare mass of 2783kg, but you wouldn’t have known it was that many kegs because it powered up steep and slippery bush tracks, through deep muddy ruts, over greasy rocks and through a few knee-deep mud holes with ease. It was as easy as pulling up, switching your terrain modes and dialling in your setting: 4WD High, 4WD Low or Auto. It has a locking rear diff and very capable hill descent control, which we tested on a few rather steep sections of track.

It’s nice to see vehicle manufacturers unafraid to put their off-roaders, even their pricey luxury ones, through a decent off-road loop at launch because it shows they have confidence in its capabilities.

The QX80 has a maximum braked towing capacity is 3500kg and 750kg (unbraked).

Lexus surprised us a bit with its choice of test roads for the LX’s launch. As well as some twisty bitumen which might not, on the surface, have seemed the most LX-friendly terrain, the launch also threw in some steep if not otherwise too taxing off-road work.

The steep downhill section highlighted the fact that the LX has probably the best hill-descent control we’ve sampled. Not only is it simple to use with speed variation via the rotary knob that otherwise controls the drive modes, it’s also consistent and doesn’t stumble or lock-up wheels and bang brake calipers intermittently.

The second surprise was how well 2.6 tonnes of luxury off-road SUV handled the winding blacktop. It’s no performance-oriented SUV with its live rear axle and off-road-worthy suspension settings, but it can be hustled along in a pretty tidy manner if you concentrate and keep it flowing.

Beyond that, it was pretty civilised at everything else, too, and although it’s not a compact vehicle by any means, the cameras and sensors ensure that it’s not too much of a brain-teaser to park.

The LX seems to have slightly better noise suppression than the LandCruiser on which it’s based and the diesel version doesn’t seem quite as vocal under load. That said, it’s still very quiet and when rolling along at highway speeds and low engine revs, even the diesel is tomb-like in its silence.

But the petrol is next-level refined. There’s a small degree of engine raspiness when you rev the petrol V6 hard (and you won’t mistake it for a V8) but it’s a sophisticated soundtrack and, at a steady throttle, the petrol LX is even more silent.

The two engines have vastly different torque curves, but the 10-speed transmission is so on top of things that it can tailor its shift-pattern to make the absolute most of whatever torque and power are being produced. You can just feel the transmission holding a gear a little longer when the driver dials up max thrust, but in the interests of getting a heavy vehicle moving swiftly, using a clever transmission is the smart, modern way to do it.

Steering is a fraction light to be completely tactile, but that’s a function of the off-road abilities, and we’re pleased to report that the turning circle is very good given the exterior dimensions and makes tight city work much easier.

The shift paddles are, ironically, likely to be of most benefit when off-road and it’s here that the LX lays the SUV pretenders to waste. With low-ratio gears in the transfer case and that clever 10-speed, the LX will climb up some amazing places. It’s fair to say that, like all good off-roaders, you’ll run out of brave pills before the LX runs out of talent.

And while the suspension does a good job off-road, the live rear-axle and independent front suspension also combine pretty well on the blacktop. There’s some initial thump on pattery bumps that are felt more than heard. But as the bumps get bigger, the LX gets even better at dispatching them.

The variable ride height feels like air-suspension but is actually a clever hydraulic adjustment to the dampers to increase their length and, therefore jack the vehicle up for off-roading. Strangely, the ride seems to become a fraction firmer (and we mean a fraction) as the height cranks up, but most owners will never notice it.

What they will notice is the composure that the LX has in most settings. No, it’s not the fastest or tidiest handling SUV out there, but it’s well beyond good enough. And off-road? Very, very little is likely to touch it.

Lexus’ latest safety innovations have made it on to the new LX, and as well as the now-usual driver aids and passive safety gear, there are fitments such as an autonomous braking system that can identify cyclists in daylight hours and pedestrians any time of the day or night.

There’s also intersection turn-assist which minimizes the chances of a crash when turning across oncoming traffic, as well as emergency steering-assist to help with fast inputs in a crash-avoidance situation.

The adaptive cruise-control now also features curve-speed reduction if the car thinks a corner is being tackled at too high a velocity. Along with that is road-sign recognition, blind-spot monitoring, tyre-pressure monitoring, 10 airbags (12 in the Ultra Luxury) and Multi-Terrain Monitoring which allows for a transparent on-screen outline of the car, allowing the driver to see what’s around and even underneath the vehicle.

It has a four year /100,00km warranty. Service intervals are scheduled at 12 months/10,000km. The total cost for three years is $1346.11 (GST included). 

Lexus Australia recently upgraded its factory warranty to five years/unlimited kilometres (up from three years). That’s better, but by no means a real advantage over most of its competition.

Capped price servicing is available at $595 per service for the first three years. The catch there is that servicing is every six months or 10,000km, an area in which Lexus trails its main competitors.