Mercedes-Benz GLB-Class vs Audi SQ5

What's the difference?

The new GLB is a worthy successor to the original. It has retained everything that made it such a unique proposition but improves where it counts - interior space and comfort, in-car and safety tech, standard features, powertrain, ride quality and, importantly, value-for-money.

The EV is the pick of the powertrains and while I didn’t get to drive it, the GLB250+ is the best value.

Servicing is expensive and the standard glass roof is a bugbear but if you can cope with those things, the boxy GLB is a terrific smallish family SUV.

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 original first-generation GLB was a standout when it comes to exterior design. It was boxy, upright and unlike anything else in the premium SUV segment. If you wanted a conventional Mercedes SUV you could opt for the smaller, bubble-shaped GLA or the larger, more sophisticated GLC.

But the GLB occupied its own space. Thankfully Benz has largely stuck with the script for the second-gen GLB, but they’ve modernised it.

Built on the new Mercedes Modular Architecture (MMA), the GLB is a full 98mm longer, has a 50mm longer wheelbase, is 27mm wider and 14mm shorter. And it does look noticeably lower to the ground compared to the old model.

While the square silhouette remains, Benz’s latest design direction is seen everywhere. The front end is more rounded now and has a large gaping low-set grille with an LED light bar running the width of the bonnet. It’s an acquired taste but I prefer the previous GLB face.

The rear is a much better angle for the GLB. Looking at it directly from the rear, it has pronounced shoulders that give it a lovely muscular look, and the curved tail-lights are a highlight.

Benz is leaning into its brand in a bid to stand out in an increasingly competitive global market. It’s doing this by using the iconic three-pointed star as a motif in the head and tail-light cluster, as well as the grille which is illuminated for some grades. I’m not sold on that element as it feels a bit over the top, but at least you won’t get confused about what brand of car it is.

Another design element I’m not sold on is the pop-out door handles. With car companies finding better solutions for handles, this seems out of touch.

Inside, everything feels upright. The integrated glass dash panel spans the width of the cabin, while brushed aluminium panels also feature. The signature Benz seat adjuster switches on the doors and the gorgeous air vent design have been upgraded successfully.

The three-spoke leather steering wheel in the GLB350 is a highlight - it’s the perfect width and well executed.

Overall the design is modern, tech focussed and very Benz.

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 extra length and width means more cabin space which is more apparent in the rear. But there is ample space up front, especially headroom.

The centre console sits up a little too high for my liking but it means you have under console storage with two USB-C ports, and a rubber mat so your phone doesn’t slide around.

It’s got a really deep central bin, while door cavities will only hold smaller bottles. You also get a wireless charger and two cupholders.

There is only a handful of buttons - hazard lights, volume, voice command and drive mode selection - under the central air vents. All other functions are found in the multimedia screen.

Benz has been a standout in the past decade with its MBUX multimedia system and the latest version is responsive, relatively easy to navigate (once you’ve located the key controls), and the graphics look super sharp and cool. The digital instrument cluster is similarly excellent.

Hopping into the second row, the seat base is set higher than the front seats for stadium seating. The seats have some bolstering but quite a lot of lumbar support.

There’s ample space in the second row, thanks to 68mm more space from the back of the seat to the front seat and an extra 34mm of headroom compared to the old car. I have ample knee, head and legroom behind my 183cm (six-foot) tall driving position, although my head is about the same height as the top of the window frame which impedes a little.

Amenities include smallish map pockets, two USB-C ports and knee-level air vents, which is always good to see. There’s a deep but skinny bottle holder on either side and a fold-down centre armrest that sits up a bit too high but it’s wide and has two shallow cupholders and a neat little phone holder.

Each of the 40/20/40 split seats folds via a pull strap at the seat base and the good news is you can adjust the second row backrest a little. The base is also on rails so it can slide fore and aft.

That is how you lower the seats to get into the third row, which is strictly for children. Benz has made it slightly easier for littlies to get back there but it is not a space for taller humans. In fact, Benz recommends up to 171cm tall at most.

One gripe is that there is no sunshade or blind for the massive standard panoramic fixed glass roof. Benz says it is tinted and has a film to reduce UV light and heat, but I’d say a few hours driving in Australian summer will challenge that. Benz isn’t the only brand doing this, but at least you can buy an accessory blind for your Polestar or Tesla. The fact is, not everyone wants a glass roof, especially in Australia, so this feature should be an option.

The boot can swallow 145 litres with all three rows up, increasing to 480L with the third row stowed and 1605L will all seats lowered. This is all decent for a smallish seven seater but if boot space is a priority then maybe have a look at a GLC.

There’s a floor mat and cargo blind but sadly no spare wheel of any kind, just a tyre repair kit, which isn’t great.

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.

Both mild-hybrid versions of the GLB are powered by a 1.5-litre four-cylinder turbo-petrol engine with 48-volt mild-hybrid tech that includes a 1.3kWh lithium ion battery.

The front-wheel-drive GLB200 delivers 120 kilowatts of power and 250 Newton metres of torque for an 8.7-second 0-100km/h dash time.

The all-wheel drive GLB220 4Matic gets a power and torque boost to 140kW/300Nm for a 7.5-second 0-100km/h time. Both petrol grades use an eight-speed dual-clutch automatic transmission.

For the EVs, the rear-drive GLB250+ delivers 200kW/335Nm and hits 100km/h from zero in 7.4 seconds.

The GLB350 4Matic ups that to 260kW/515Nm and a 100km/h dash time of 5.5 seconds.

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.

The GLB EVs uses a nickel manganese cobalt (NMC) battery with 85kW of usable energy.

Driving range and energy efficiency for the GLB250+ is a decent 570km and 15.5 kilowatt hours per 100km. The two-motor AWD GLB350 range drops slightly to 554km and uses 17.7kWh/100km

The EVs have four regenerative braking modes. After a long morning drive in the GLB350 I recorded 15.5kWh, which is solid.

The new GLB uses an 800-volt architecture supporting DC fast charging up to 320kW. Under the right conditions at a high-powered DC charging station, you can technically add up to 260km of range in 10 minutes, according to Mercedes.

AC charging capacity is available up to 22kW and there are four regenerative braking modes, as well.

When it comes to fuel economy in the mild hybrids, the GLB200 consumes 6.1 litres per 100km and the GLB220 sips 6.5L. This powertrain has the ability to use electric power to coast when cruising at highway speeds.

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.

I have driven the previous GLB250, which was a fun, punchy SUV. There’s no sporty second-gen variant yet, but if you’re after performance, check out the EV rather than the mild-hybrid.

I only drove the mild-hybrid briefly at the launch event so I’ll focus most of my impressions on the EV. The GLB220 4Matic is quick enough off the line, but there is some lag. Brakes are strong and the cabin is well insulted.

But for me, the EV is the clear pick.

Of the EVs I only drove the GLB350 4Matic as Benz didn’t have a 250+ available.

It’s very quick from a standing start, but not whiplash quick and that is perfectly appropriate for a family-friendly SUV. It delivers the power in a linear manner but when you put the foot down it is very responsive.

I couldn’t detect a massive difference between Comfort and Sport mode to be honest, but you get enough punch in Comfort.

The GLB is tall and top heavy so there is body roll but that’s fine for this sort of vehicle. You’ll notice the weight of this car if you push it into a tight bend at speed - it’s quite heavy and I felt a bit of lateral movement, but the traction control systems help keep the car in check. The grippy tyres help here, too.

Benz has worked hard to improve ride quality with the new-gen model and it shows. The drive route from Melbourne’s south-eastern suburbs to the Mornington Peninsula was littered with potholes, some that looked like they could cause serious damage. The GLB soaked up even some of the sharper holes like a pro. The ride at urban speeds is calm and measured.

The sound deadening measures have clearly helped as well as it is a much quieter cabin than its predecessor. All of this adds to the feeling that this GLB is a more refined, premium SUV than the old model.

I found the steering a little light and twitchy at the start of the drive but by the end of the day I noticed some heft to the feel, and it’s still direct.

The brakes in the EV are a little slower to respond than the mild-hybrid, which takes some time to get used to.

But overall, the drive experience is largely very positive.

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.

The GLB comes with Mercedes’ five-year, unlimited kilometre warranty, which is now the standard in the premium segment. The EV’s battery warranty lasts eight years or 160,000km, which is also pretty standard.

Services are required every year or 25,000km which is a decent interval.

Benz offers pre-paid service packages running for three, four or five years. The mild-hybrid is $3430 for three years, $4680 for four and $6300 for five years.

The EV is more affordable to service, costing $2525 for three, $3765 for four and $4440 for five years.

This is quite pricey compared to rivals. BMW’s iX3 is offered with a six-year pre-paid plan and it’s $2420. The Polestar 4 is free to service for the first five years.

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.