Infiniti QX30 vs Lexus LS500H

What's the difference?

Even though it’s almost identical to the Q30, the QX30 manages to feel sufficiently different in suspension tune and cabin ambiance to be considered different.

It’s a disappointing oversight, though, by Infiniti to deny the base GT such basic safety fundamentals as a rear view camera (which Infiniti assures us is being worked on).

The Lexus LS 500 and 500h are both exceptional cars. The ‘obnoxious’ styling especially to the grille makes the offerings from BMW, Benz and Audi look bland and overly corporate inside and out. It’s really in the dynamics department that the LS falls short of its rivals and only the LS 500 is enjoyable if you like to drive with a degree of conviction. 

Both the LS500 and 500h, though, have wonderfully comfortable rides and this together with those sumptuous interiors makes these the perfect place to be if you’re in the back being swiftly and quietly taken to you next meeting.

For me the sweet-spot pick would be the LS 500 F Sport for its value and dynamic ability.

The QX30 is one of the first projects to result from a technology partnership formed between the parent company of Mercedes-Benz and the Nissan-Renault Alliance.

In a sign of how worldly the car industry is becoming, the QX30 is built in Nissan’s Sunderland plant in the UK, using the German Mercedes-Benz A-Class platform and powertrains, all under Sino-French ownership via the Nissan-Renault Alliance.

On the outside, the design that first aired on the Q30 is pretty unique. It’s not a subtle car, with deep crease lines along its sides that, according to Infiniti, is an industry first in terms of manufacturing complexity.

When it comes to differences between the two vehicles, it’s minimal at best. There is a 35mm increase in height (30mm from taller springs and 5mm from roof rails), an extra 10mm in width, and extra trims affixed to the front and rear bumpers. Aside from the all-wheel-drive underpinnings, that is pretty much it for the exterior.

The same black plastic overfenders that are fitted to the Q30 are present on the QX30, with 18-inch rims on both the base model GT and the other variant, the Premium.

The dimensions of the QX30 are also an exact match for those on the Mercedes-Benz GLA, with the long front overhang acting as the main visual connection between the two cars.

“You’re either going to love them or hate them.” You can bet that whenever you’re told this just before being introduced to somebody then that somebody is going to be downright obnoxious. The same goes for the LS, well it’s face anyway, because those are the kinds of statements made about that grille.

The thing is, the LS needs an obnoxious face because its up against The Establishment -  the Mercedes-Benz S -Class, BMW 7 Series and Audi A8, and given there’s no way they’ll ever let Lexus into their little ‘club’ it’s good that the LS has steered clear of imitating them and is boldly different.

This was also the type of thinking which inspired the grille’s creator, Tokuo Fukuichi. The so called ‘spindle grille’ first appeared in 2010 on the CT200h before rolling out to the rest of the Lexus line-up. The look polarised the opinions of fans and even executives inside Lexus. But Fukuichi was adamant the key to the brand’s survival and success was to not to be boring.

That massive gaping mouth is anything but boring, and for this new-generation LS the spindle grille has been overhauled. Yes, some car companies might make a few tweaks to a grille, but not Lexus. Using a CAD computer program, it took designers six months to refine each of the 5032 surfaces on the F-Sport’s grille and the more than 7000 on the Sports Luxury’s. If only you didn’t have to slap a number plate on these exquisitely spun net-like structures.

New LED headlights and the ‘Zorro blade-slash’ LED running lights are equally obnoxious and therefore perfectly suited for the LS’s face. So too are the enormous air inlets below them in the bumper. If only the rest of the car’s exterior was as wild and not mild and milder the further you get from the grille. The rear looks stately, modern and sleek but could have done with something more adventurous (similar to IS’s taillights).

But the LS’s insides make up for that dullness, with a cabin that’s decadent and alien at the same time. A dash which sweeps from door to door features asymmetrical string-like design elements which are a theme carved through wood and glass and stitched into leather throughout the cabin. The quality is superb, while the fit and finish is better than I’ve seen on some of its competitors.

There are four no-cost interior packages on the Sports Luxury ranging from 'Moon White' trim with walnut decorative inlays to black trim with 'Crafted Latte' inserts. But it’s the $9800 optional 'Black with hand-pleating' and 'Kiriko' glass which is a stand out. It’s an intriguing look, the pleated fabric which cascades around the hand-cut Japanese glass.

The F Sport’s cabin is less decorative with seats that hold you tighter in three no-cost option leathers from 'Moon White' to 'Flare Red' with aluminium door and dash decorative elements.

Both cabins are sumptuous, although they fall a little short in gob-smacking tech like those amazing, expansive, floating dash screens and the virtual instrument cluster in the S-Class. Yes, there’s the large screen up front and the seat-back screens in the rear but the styling of the graphics and typeface reveal the Toyota DNA.

The LS has the presence a prestige brand’s flagship car should - imposing, long and wide. Look at the LS’s dimensions. At 5235mm end-to-end and 1900mm across, the LS is longer and wider than a Mercedes-Benz S-Class, but swoops in lower at 1450mm. The LS’s wheelbase is longer than a regular S-Class’s at 3125mm, too.

Apart from the grille you can tell an F Sport from a Sports Luxury by its black brake calipers and black elements in the front bumper, boot lid and sill.

To tell a 500 from a 500h, the difference is subtle. There are the badges, of course, but the 500's rear bumper also has a different design with chrome exhaust surrounds.

The QX30 is obviously very similar to the Q30 in many respects, but the interior is slightly different, with larger, less cosseting seats up front and slightly higher seats in the rear.

The cabin is also lighter in overall appearance, thanks to a paler colour palette.

There are plenty of neat inclusions, including a pair of USB ports, plenty of door storage, a space for six bottles and a sizable glove box.

A pair of cupholders resides up front, along with a pair in the fold-down armrest in the rear.

There is no particularly logical location for the storage of smartphones, though, and the lack of Apple CarPlay or Android Auto is down to Infiniti opting for its own phone connectivity suite.

A decent 430 litres of luggage space behind the rear seats is contrasted by a cramped rear area for all but the smallest of passengers, while sharply shaped rear door apertures making getting in and out a bit of an ask.

There are two ISOFIX baby seat points and a 12-volt socket in the rear, as well.

Anything with a 3.1m wheelbase has to be practical right? Well, legroom in the back is excellent, but I can’t properly stretch out in that reclining rear seat with the ottoman without my feet hitting the seatback.

Headroom is also a bit a restricted in that rear row for me, too. That’s something to keep in mind for taller passengers (I'm 191cm tall).

A cargo capacity of 480 litres is 30 litres shy of the Mercedes-Benz S-Class, while the cooler box in the rear (that comes with the Sports Luxury trim) eats into the boot space and drops the total to 440 litres.

The LS is a five-seat sedan, but that centre rear seatback folds forward to become the armrest and houses the controls to the massage and reclining functions, plus two cupholders.

There’s another two cupholders up front and pockets in all the doors. While the storage area under the centre console armrest in the front and back is good – that’s about it for storage.

An access mode will raise the car by 30mm when getting in and lower it by 10mm when getting out. Those wide opening doors also make entry and exit easier.

The line-up is simple. There are two powertrains: the turbo-petrol V6 LS 500, and the petrol-electric LS500h hybrid, and there's no price difference between them. Then, there are two trim levels: the F Sport for $190,500 and Sports Luxury for $195,500. 

Coming standard on the F Sport are 'F Sport' seats with leather upholstery, heated front and rear seats, dual-zone climate control, 28-way power adjustable front seats and head-up display. The multimedia system comes with a 12.3-inch screen, sat nav, DVD player, DAB+ digital radio, Bluetooth connectivity and a 23-speaker Mark Levinson sound system.

There’s also LED headlights, 20-inch alloy wheels and a kick-open tailgate. While the F-Sport misses out on some of the plush features of the Sports Luxury it does get hardware for better on-road dynamics which you can read about in the driving section below.

The Sports Luxury has that large screen, those power adjustable front seats and the multimedia system with that Mark Levinson stereo, too, but adds much more. The front passenger seat slides and folds itself forward to allow the seat behind it to recline and extend its ottoman-style leg rest. 

Both rear seats are 22-way power adjustable and heated. If you’re lucky enough to be lounging back there, you’ll also two 11.6-inch seat-back screens with a DVD player. Plus, there’s four-zone climate control, a rear cooler box and power sun shades.

The F-Sport and Sports Luxury have their own choice of no-cost interior options. The Sports Luxury also gives you the option to buy (for $9800) one of four special interior packs – you can read about the standout one with the hand-cut glass below.

There are 11 body colours to choose from: Sonic Quartz, Sonic Silver, Titanium, Liquid Metal, Onyx, Graphite Black, Vermillion, Scarlet Crimson (a dark red), Metallic Silk, Deep Metallic Bronze and Deep Blue.

Just the one engine is used across both cars; the 155kW/350Nm single-turbo 2.0-litre four-cylinder petrol engine from the Q30 and A-Class.

It’s backed by a seven-speed transmission and wired into an all-wheel-drive system that is biased towards a front-drive configuration.

Sourced from Mercedes-Benz, up to 50 per cent of drive can be sent to the rear wheels, according to Infiniti.

Let's talk engine specifications .The LS 500 has a 3.5-litre twin-turbo petrol V6 making 310kW/600Nm, with drive being sent to the rear wheels via a 10-speed automatic transmission. That's impressive horsepower, but this car is heavy is a weight of about 2.3 tonnes.

The LS 500h has a 220kW/350Nm 3.5-litre V6 (a different engine to the 500’s) plus two electric motors driving the rear wheels. The total power output is 264kW. Shifting gears in the 500h is a continuously variable transmission (CVT). Just a reminder, too, the LS 500h is not  a plug-in hybrid. Regenerative braking re-charges the lithium-ion batteries.  

If you're looking for a diesel, you won't find one here. Same goes for a manual gearbox. And, while buyers can choose an all-wheel drive (awd) Lexus LS in other markets around the world, ours are all front-wheel drive.  

Infiniti claims a combined fuel economy figure of 8.9L/100km for the 1576kg QX30 across both the variants; this is 0.5L thirstier than the Q30 version.

Our brief test yielded a dash figure of 11.2L/100km over 150km.

The LS 500 has an official fuel consumption of 9.5L/100km while the 500h’s is 6.6L/100km after open and urban road driving. We drove both cars on mainly country roads and saw an average of 10.1L/100km in the LS 500 and 9.1L/100km in the 500h.

Again, it would be easy to think that the QX30 would feel almost identical to its lower-riding sibling – but that would be incorrect. We criticised the Q30 for being a bit too buttoned down and unresponsive, but the QX30 feels more lively and involving, thanks to its unique spring and damper set-up.

Even though it’s 30mm higher than the Q, the QX doesn’t feel it at all, with a benign, pleasant ride with good body roll control and competent steering.

Our front-seat passenger complained of feeling a little ‘hemmed in’, which is a valid point. The sides of the car are very high, and the roofline is quite low, exacerbated by the steeply raked windscreen.

The 2.0-litre four-potter is smooth and punchy, and the gearbox well suited to it, but it’s lacking in aural character. Luckily the QX30 does a terrific job of suppressing noise before it gets into the cabin, then…

My first experience of the new LS was from the back seat of a 500 Sports Luxury being driven from the airport to the venue where Lexus Australia would deliver the presentation on its fifth generation of the car.

Seat reclined, I was whisked quietly and comfortably through the traffic, barely any road or wind noise, the ride was superb on that air suspension, a little floaty but still damped well enough for it not to become bouncy, with minimal head sway (the movement that makes you car sick).

Cocooned in leather with seat-back screens for audio and DVD the ride and environment was just right for a limousine chauffeuring important business types who need swift and tranquil transportation. Not for weirdos like me who were only interested in the way the front and back multi-link suspension kept a 2.3-tonne car with a 3.1m wheelbase so civilised, even through roundabouts. I wondered if this was actually the best way to experience the LS – from the back seats, being driven?

When I did drive the 500 and 500h in the two trims later it more or less confirmed that first impression. The 500 in F Sport trim was the best to drive, while the 500 in Sports Luxury was the best to be driven in. Why? I’ll explain.

The LS 500’s 3.5-litre twin-turbo V6 makes more power than the hybrid for starters, which is always a good thing when you need to move a car this heavy. Even then the LS 500’s acceleration isn’t super quick, and the engine needs to work hard when asked to get a wriggle on. That 10-speed automatic transmission is excellent though. 

The same can’t be said for the CVT in the 500h which under harder acceleration does what CVTs do in that situation, make more noise without seeming to get the drive effectively to the wheels.

The 500h’s naturally aspirated V6 is a good thing, but it seems the weight of the car and the CVT work against it being exciting to drive. After a couple of hundred kilometres in a 500h blasting through the countryside steering it became tiresome rather than rewarding with the engine constantly kicking in and whining incessantly when asked for more beans, please. 

This car is far better suited to slipping silently through city streets than it is galloping through the bush – that’s where the 500 is a lot more at home.

The 500 and 500h are rear-wheel drive cars, and this, along with an almost 50-50 balance, sets the ground work for good cars to pilot. The F-Sport trim adds an active rear stabiliser bar as standard equipment and brings a more sophisticated version of Lexus’s 'Vehicle Dynamic Integrated Management' (VDIM) – a stability system using data from suspension, ABS, traction control, electric power steering, the stabiliser bar and rear steering. The result is the control of longitudinal, vertical, yaw, roll and pitch movements for better ride and handling.

The F Sport trims adds bigger brakes, too with 400mm x 36mm discs on the front and 359mm x 30mm at the back, plus staggered tyres with 245mm rubber at the front and 275mm at the rear.

The electric steering is light, which makes it easy to manoeuvre in carparks, and an 11.2m turning circle is great for the class. 

On the open road at speed the steering is pinky-finger light even in Sport+ mode, and while it’s smooth and accurate, I want to feel more connected to the wheels and where they’re pointed.

While the LS 500 is more the driver’s car than the 500h neither perform as well dynamically as Benz’s S-Class, but from the back seat the LS feels just as comfortable and even plusher.

The Lexus LS has not been crash tested, but all the signs are there that this is an exceptionally safe vehicle, from the structure of the car to the advanced safety technology such as AEB (forward and reverse) with pedestrian detection, lane keeping assistance and adaptive cruise control.

For child seats there are three top tether anchor points and two ISOFIX mounts across the rear seats.

Both the 500 and 500h are fitted with run-flat tyres.  

The Q30 is offered with a four-year, 100,000km warranty, and servicing is suggested every 12 months or 25,000km.

Infiniti offers a fixed three-year service schedule, with the GT and the Premium both costing an average of $541 over the three services provided.

The Lexus LS is covered by a four-year/100,0000km warranty. Servicing is recommended every 15,000km or 12 months. There is no capped price servicing program. Being a Toyota family product the Lexus LS also comes backed by the same reputation for reliability and you may experience lower maintenance costs than perhaps its German rivals.