Lexus Gx550 vs Audi SQ5

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.

Let’s forget the money, for a second, because yes, you’re paying more for the Sportback variant. But if you can afford it, then why wouldn’t you. This is a sleeker, sportier and more stylish answer to the regular Q5, which was already a super-solid offering in the segment. And as far as I can tell, the practicality sacrifices you have to make are minimal at best. 

So why not?

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.

Our adventure began with the SQ5, and, to my eye at least, it looks mean, and more like a jacked-up hot hatch than sportier version of a mid-size SUV.

Speaking of which, it looks bigger than a mid-size, too, as though the flattened roof has pushed the rear out for more length, at least visually.

By far its best angle, though, will be afforded to the people in front of you on the road, with each peek in the rear-view mirror revealing a wide, forward-leaning grille, all black honeycomb mesh, with a cat-clawed bonnet and headlights that sweep back into the bodywork, hinting at speed before it even sets off. 

Side on, the massive 21-inch alloys hide red brake calipers, but it does also reveals a tale of two SUVs, with the front half looking taller and straighter, while the rear roofline is more raked as it flies towards a fairly small rear windscreen with a roof spoiler that juts out over it. 

At the rear, the quad exhaust tips (which sound great), and a boot spoiler moulded into the bodywork complete the package.

But even in lesser lesser Q5 45 TFSI guise, this Sportback looks the business, I reckon. Though a little more premium than performance-focused, perhaps.

As the name suggests, the Sportback version gives you, well, a sportier back, and it all starts at the B-Pillar, with a more raked roofline that gives this version of the Q5 a sleeker, more slippery look. 

But they aren’t the only changes. In Sportback models, the single-frame grille upfront is different, and the grille is also positioned lower, and seems to jut out from the bonnet more, for a lower, more aggressive look. The lights are also positioned a little higher, and those massive air vents on either side are different, too.

The cabin is the usual level of Audi niceness, with a big central screen, big digital screen in front of the steering wheel, and a sense of genuine solidity and quality wherever you look.

There are some questionable materials at work, though, like the door trims and the hard plastic that your knee rubs against when driving, but all in all, it's quite a lovely place to spend time.

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 Q5 Sportback range stretches 4689mm in length, 1893mm in width, and around 1660mm in height, depending on the variant. It rides on a 2824mm wheelbase. 

And remember when I said there were few practicality penalties for the new sportier look? This is what I meant.

Up front, it's basically the same Q5, so if you know that car, you'll know this one, with its spacious and airy feeling front seats.

In the back, though, things are a little different, just not quite as different as I was expecting. The new sloping roofline has actually only reduced headroom by 16mm. I’m 175cm tall, and there was clear air between my head and the roof, and plenty of leg-room, too.

The central tunnel arrangement means you probably don’t want to squeeze three adults across the back, but two would really be no problem at all. That way, you can deploy the back seat divider to uncover two cupholders, use the two USB charge ports or adjust your climate controls, including temperature settings.

In the 45 TFSI and SQ5 models, the rear seats also slide or recline, meaning you can prioritise luggage space or passenger comfort, depending on what you're carrying.

Up front, there’s heaps of little cubby spots, including a key storage spot under the aircon controls, another in front of the gear shift, a phone slot next to the gear shift, two cupholders in the big centre console, and a surprisingly shallow centre console that’s home to a wireless phone charger and a USB port, joining the regular USB port under the drive mode selector.

And at the rear, Audi reckons there’s 500 litres of storage, only about 10 litres less than the regular Q5,  which grows to 1470 litres with the second-row folded.  

The three-model line-up (two regular Q5s and the SQ5) Sportback range kicks off with the Q5 40 Sportback TDI quattro, which will set you back $77,700 (which is plenty more than the $69,900 of the regular Q5).

The entry-level Q5 Sportback gets 20-inch alloys, a standard S Line sporty exterior styling treatment, LED headlights and tail lights, and an electric tailgate with gesture control. Inside, there’s leather trim, electric sport seats, three-zone climate, paddle-shifters for the steering wheel and ambient interior lighting.

You also get the virtual cockpit, the 10.1-inch central screen with all the Connect Plus services, like live traffic, weather and restaurant tips, as well Android Auto and wireless Apple CarPlay.

The range then steps up to the Q5 45 Sportback TFSI quattro, yours for $86,300. That's another marked jump from its regular Q5 equivalent.

That model delivers a new 20-inch alloy wheel design, a panoramic sunroof, and Matrix LED headlights, The S Line treatment extends to the interior, along with Nappa leather trim, heated front seats and a sliding or reclining rear bench. You get a better sound system, too, with 10 speakers, including a sub-woofer. 

Finally, the SQ5 Sportback is yours for $110,900 (up from $106,500), and delivers 21-inch alloys, adaptive dampers and red brake callipers, while inside you get electric steering adjustments, a head-up display, colour ambient lighting and a banging Bang and Olufsen stereo with 19 speakers.

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. 

There are three engines total here, kicking off with the 2.0-litre TDI in the Q5 Sportback 40. It produces 150kW and 400Nm - enough for a sprint to 100km/h in 7.6s. The 2.0-litre TFSI in the Q5 Sportback 45 petrol bumps those figures to 183kW and 370Nm, lowering your spring to 6.3s. 

Both pair with a seven-speed S tiptronic automatic, and feature a 12-volt mild-hybrid system to smooth out acceleration and lower fuel use, as well Quattro ultra, which can disconnect the rear drive shaft so only the front wheels are driven.

The SQ5 gets a seriously lusty 3.0-litre TDI V6 which deliver 251kW and 700Nm, and a sprint of 5.1s It also gets a 48-volt mild-hybrid system, and an eight-speed tiptronic transmission.

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.

All Q5 Sportback models are fitted with a 70-litre fuel tank, which should produce a driving range in excess of 1000kms - though prepare for pain at the pump. Sometimes premium fuel in Sydney can run to around $1,90 a litre, for example, so the good stuff will cost you around $130 bucks a tank in the petrol cars.

Audi says the Q5 Sportback 40 TDI will sip 5.4 litres per 100km on the combined cycle, while emitting 142g/km of c02. The 45 TFSI needs 8.0 litres per 100km on the combined cycle, and will emit 183g/km of c02. The SQ5 sits somewhere in the middle, with 7.1 litres per 100km and 186g/km of c02.

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. 

How to best describe the drive experience in the Q5 Sportback? That's easy. And it's 'easy'.

Honestly, I know this is ostensibly the sportier version of the Q5, but the truth is that, in the 45 TFSI version we tested, it's a comfortable, light-feeling drive experience that only ever reveals its sporty nature when you really command it to.

Left in its Auto drive mode, the Q5 45 TFSI will positively waft around town, road noise kept to an absolute minimum, and feeling somehow smaller and lighter than its dimension would suggest.

You can dial-up the aggression by cycling through the drive modes, of course, but even in Dynamic guise it never feels too harsh, too aggressive. More that you've simply tightened the screws a little bit.

Plant your right foot and the 45 TFSI will collect speed in a way that Audi refers to as "hot hatch-like", punching towards the 100km/h sprint with verve and aggression. But having just stepped out of the SQ5, it still feels somehow sedate, and almost relaxing, rather than out-and-out aggressive.

And that's because the SQ5 variant is clearly, purposefully, the performance-focused variant here. I think this V6 engine is an absolute peach, and its the kind of powerplant that inspires you to stick with the vehicle's most dynamic settings, putting up with the just-too-firm suspension settings so you can access more fo the grunt more quickly.

And it feels constantly ready for action. Tap the accelerator and the car bristles, dropping down a gear, revving higher and preparing for your next command.

Through bends, it feels smaller and lighter than you might expect, with plenty of grip and steering that, while not overflowing with feedback, feels true and direct.

Short answer? It's the one I'd take. But you'll pay for it.

The Audi Q5 Sportback carries a five-star ANCAP safety rating thanks to the regular Q5, but that’s really the minimum cost of entry these days. So what else do you get?

Advanced driver-assist systems on offer here include autonomous emergency braking (with pedestrian detection), active lane-keep assist with lane change warning, driver attention assist, blind-spot monitoring, rear cross-traffic alert, park assist, a great surround-view camera, parking sensors, exit warning and tyre pressure monitoring, and more radars than you can poke a stick at. 

There's also twin ISOFIX anchor points, and top-tether points for child seats.

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.

All Audis are covered by a three-year, unlimited-kilometre warranty, which really isn’t great in a world of five-, seven- and even 10-year warranties.

The brand will let you prepay your services, required annually, for the first five years, with the regular Q5 Sportback billed at $3140 and the SQ5 billed at $3170.