Mercedes-Benz GLB-Class vs Audi Q5

What's the difference?

It’s easy to say the GLB35 doesn’t deserve to be called an AMG when looking at its credentials on paper, but get behind the wheel and it’s evident Affalterbach played a key role in making it feel as special to drive as it should be.

The GLB35 has all of the great qualities of the GLB250 and other GLB variants, but successfully adds a performance focus to make for an even more compelling package.

Indeed, the GLB35 proves you can pretty much have it all.

Ever since returning from the launch of the new Audi Q5 I've been looking at old ones and thinking how lumpy and dumpy they look by comparison. The new Q5 will be an adornment to our roads in styling terms, it's a tour de force of interior design and its engines might well be the last barking gasp of its kind. So it's definitely worth a look if you're in the mid-size SUV space. And you don't want an EV yet.

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

With the boxy and therefore rugged-looking GLB laying some great foundations, it’s no surprise the GLB35 looks pretty damn good – to these eyes, at least.

Being an AMG model, it stands out from the crowd with an aggressive body kit, with the chunky bumpers, aerodynamic roof spoiler and racy rear diffuser all unique alongside the now-signature Panamericana grille insert.

A set of 20-inch alloy wheels with 255/40 tyres ups the ante at the side, where the carryover black plastic wheel-arch and skirt cladding serves as an obligatory reminder that this is an SUV.

Also of note are the nicely designed LED headlights and tail-lights, which literally light the way, but there’s no getting past the bespoke diffuser element, which integrates the sports exhaust system’s dual 90mm tailpipes.

Inside, the GLB35 is a technological tour de force, with a pair of 10.25-inch high-resolution displays proudly sitting side by side atop the dashboard, with one the central touchscreen and the other the digital instrument cluster.

Both are powered by Mercedes-Benz’s MBUX multimedia system, which arguably remains the best there is today thanks its speed and breadth of functionality and input methods.

The GLB35 is also properly premium. Lugano leather upholstery covers the seats and armrests, while Nappa trims the sports steering wheel. Even the door shoulders and inserts get ‘cow hide’, although theirs is of the artificial variety.

Soft-touch materials are used for the upper dashboard, leaving hard plastics to the lower sections, which is what you’d expect for the price.

While the black headliner makes for a dark cabin, brightness comes from the metallic trim used throughout, notably on the steering wheel, dashboard, doors and centre console. And let’s not forget the pop of colour provided by the addictive ambient lighting.

And mercifully, scratch- and fingerprint-hungry gloss-black accents are limited to the surrounds of the turbine-style front air vents, dual-zone climate controls and centre console.

Unique to the GLB35 are Carbon Structure trim and stainless-steel sports pedals, just in case you forgot you weren’t driving a regular GLB.

Other than the closely related Porsche Macan, and maybe an Alfa Romeo Stelvio, it's hard to think of a better, smoother looking SUV than this new Audi Q5, with its revised Singleframe grille flanked by vertical air curtains, that look a bit like gills.

Audi claims the Q5 has "perfect proportions", which is bold, but it certainly looks sleek rather than bulky, with a nice silhouette and dynamic rather than Mumsy appeal.

The rear is particularly attractive with a three-dimensional light strip that ties it all neatly together. It's a more refined, sharper look than the Q5 it replaces.

Inside, of course, Audi has either taken its interior to another level of futuristic fabulousness, or put too many bloody screens in, all of which are too big, depending on who you ask. And how old they are. Kids will love it, however.

Interestingly, while every car company ever claims that its cabin has a cockpit feel, focusing on the driver, the Q5 really does. So much so that there's a raised edge in the centre console that quite noticeably cuts the driver off from the passenger. In the other front seat you do feel a bit removed, as if you're meant to leave the driver to it, which might be why you get your own screen to play with.

Measuring 4650mm long (with a 2829mm wheelbase), 1845mm wide and 1660mm tall, the GLB35 is more like the GLC43 in size than the GLA35, making it a mid-size SUV despite its small underpinnings. And that is good news for practicality.

Cargo capacity with the 50/50 split-fold third row stowed is more than solid, at 565 litres (VDA), but it can be increased to a cavernous 1800L with the 40/20/40 split-fold middle bench also not in use. If six or seven passengers are onboard, though, there’s very little room to move.

Nonetheless, the boot is still well packaged, featuring a huge aperture, no load lip, and a flat floor, which make loading and unloading bulkier items a hell of a lot easier. And even the load cover can be stored underfloor when out of action. How good.

There are also four tie-down points, two bag hooks, a side storage net and a 12V power outlet on hand to make matters even easier, while the rear seats can be stowed from the boot.

While we’re on the topic, Mercedes-Benz says the third row can accommodate passengers up to 168cm tall, with the middle bench able to slide fore and aft by up to 140mm.

Yes, I'm too tall, at 184cm, but I can still sit in the very back, although not in total comfort. All in all, about a centimetre of legroom and negligible headroom and toe-room are on offer there for me.

That said, getting in and out in the first place is the real challenge here, with the middle bench unable to tumble forward for easy ingress and egress. Yep, you’re not going to look smooth either way. Children can deal with it, but adults won’t be thrilled.

Therefore, the middle bench is the place to be, even when it’s slid all the way forward. Behind my driving position, it offers about a centimetre of legroom, but this can be increased to several inches by sliding it all the way back.

Either way, plenty of toe-room is available alongside more than an inch of headroom. The latter is more impressive when you consider that’s what you get with the standard dual-pane panoramic sunroof fitted.

Even better, the second row can seat three adults at a pinch, partly thanks to the low transmission tunnel, which means there’s the right amount of space for six fully grown feet across the two footwells. It goes without saying children will again be fine.

Speaking of which, four ISOFIX and five top-tether anchorage points are on hand for fitting up to four child seats across the second and third rows, which makes the GLB35 a serious option for families that like to be sporty.

There are plenty of in-cabin storage options, with the large central storage bin featuring a pair of USB-C ports, while the glovebox is also quite useful, even if it is oddly shaped. And there’s also a sunglasses holder in front of the rearview mirror.

The centre console’s cubby isn’t really designed for storage, with it basically taken up by two cupholders, another USB-C port and a wireless smartphone charger.

The front door bins can accommodate one small and two regular bottles each, which is great, while their rear counterparts can take one small and one regular apiece.

Second-row occupants also have access to a fold-down armrest with another pair of cupholders, but being of the retractable variety, they’re flimsy.

These passengers also have two USB-C ports, with the pair folding out below a small cubby and air vents, which are found at the back of the centre console. Storage nets are also fitted on the front seat backrests.

And don’t worry; the third row gets in on the action, with two cupholders (one regular, the other small) splitting the seats, which have individual USB-C ports and device straps to the sides.
 

Audi is talking up the little things with the new Q5, like the fact that there's a much larger storage space under the centre armrest now - and it's true, you can lose your car key in it - plus numerous other storage areas, and an inductive and cooled charging tray so your phone won't get cooking hot and shut off, with 15 watts of power.

In exciting news for screen addicts/children, Audi is also very excited about its uprated USB-C ports, which can charge at up to 60 watts through the two in the front, while the rear passengers also get two more, rated at 100 watts. Which sounds like a lot, Audi says it's enough to run your laptop.

The new Q5 also gets a very useful adjustable rear seat, which can be slid lengthways and tilted, providing either more passenger space and less boot room or vice versa. With the rear seat down you get 1473 litres, but thanks to the new sloping rear design you get slightly less room in the Q5 SUV, with 520 litres behind the second row. The SQ5 gets even less at just 470 litres.

Another handy feature is that the snappy luggage cover can be stowed in a special designed compartment under the boot floor. Clever.

The fact that you could get a classy SUV like the Audi Q5 for as little as $73,400 was certainly showroom bait, but that’s about to change when the new line-up arrives in the third quarter of 2025, because the entry-level Q5 35TDI will disappear from the range. 

That means the Q5 will start at the 40TDI Quattro Sport level, currently priced at $87,000 before on-road costs for the outgoing version, with its 2.0-litre diesel MHEV setup. As entry prices go, that’s quite the jump upstream, but on the plus side, while Audi hasn’t announced official pricing for new Q5 yet, the word is that there shouldn’t be much of a rise anywhere in the range (I'd read that as, there will be a price rise, but it will be small). You’ll no doubt hear the phrase “new car, more equipment, (almost the) same price” from Audi.

If you don’t want a diesel, you’ll likely be paying around $88,315 for the entry-level 2.0-litre petrol model, the 45TFSI Sport MHEV with front-wheel drive only, or $96,515 for the 45TFSI Quattro S Line.

The step up to the 55TFSI will take you north of six figures, probably by about $5k, while the range-topping Audi SQ5 will make a welcome and somewhat surprising addition to the line-up, powered by a properly noisy and exciting 3.0-litre V6 and most likely priced somewhere around $125,000, depending on spec level.

As I say, there are no confirmed prices yet so these numbers might creep higher by the time the car actually goes on sale locally, but the word is that any increases will be almost too small to notice.

The uncertainty makes it a little hard to be definitive on the value equation, but we can say that the new Q5 feels a level up inside and a lot posher, particularly with is giant multi-screen dash layout, so if the prices to stay stable you really will feel like you’re getting more car for the same money. 

In terms of spec and trim levels, we will have to wait and see until the local variants are launched.

What we know will be standard inclusions are things like the standard acoustic glazing on the windscreen, for a quieter cabin, the Dynamic Interaction Light, which runs from the doors through the dashboards and creates a very cool look at night, as do the new three-dimensional rear lights. The individually configurable, and beautifully clean and clear head-up display, with augmented reality features, should also be standard, but we shall see.

The GLB35 is powered by an uprated version of the GLB250’s 2.0-litre turbo-petrol four-cylinder petrol engine, with the AMG-fettled version producing a more substantial 225kW of power from 5800-6100rpm and 400Nm of torque from 3000-4000rpm (up from 165kW/350Nm).

This version is also matched to an eight-speed dual-clutch automatic transmission as well as Mercedes-AMG’s front-biased but fully variable 4Matic all-wheel-drive system.

Thanks to this combination, the GLB35 can sprint from 0-100km/h in just 5.2 seconds with launch control enabled, while its electronically limited top speed is 250km/h.

Does it seem strange to anyone else that a company so focused on reducing emissions through promoting EVs is still offering diesel engines? The reason, of course, is that so many Europeans still want them, because fuel is so damn expensive there, and yet Audi Australia says it will also offer them here.

That's where the range now starts, with the TDI diesel version coming standard with all-wheel drive, or Quattro, with outputs of 150kW/400Nm. Like every car in the new Q5 range, it uses a seven-speed dual-clutch gearbox, which is excellent.

Every Q5 also uses MHEV technology to reduce emissions and increase performance, which means it gets a 48-volt electrical system to support its combustion engines. This system means you start up, in most conditions, in silent electric mode, and you can even manoeuvre and park the car using only electricity, most of the time.

The electrical system is connected to a Powertrain Generator which provides additional torque of up to 230Nm, and a mere 18kW of extra power. Every little bit helps I guess.

Basically, it's a mild hybrid, meaning you get a mild amount of help, and the full plug-in hybrid Q5s are coming soon. Later this year.

Stepping up from the diesel you can have a 2.0-litre TFSI four-cylinder petrol engine, with either front or Quattro all-wheel drive and making 150kW/340Nm.

The range-topping all-wheel-drive SQ5 gets a very enjoyable 3.0-litre six-cylinder TFSI petrol engine with 270kW and 550Nm. It feels like more kilowatts, honestly.

The GLB35’s fuel consumption on the combined-cycle test (ADR 81/02) is 8.3L per 100km, while its carbon dioxide emissions are 186 grams per km. All things considered, both claims are pretty decent.

In our real-world testing, though, we averaged a high 14.1L/100km over 75km of driving split between highways and country roads, so not your typical mix, then. A heavy right foot also played into that result, so expect a better return after a regular run.

For reference, the GLB35’s 60L fuel tank can be filled up with 98RON petrol at minimum.

The MHEV technology is supposed to provide some boost to fuel economy but the figures aren't super exciting. You'll be getting a claimed 5.9 litres per 100km from the 2.0 TDI diesel, or 6.5L/100km from the 2.0 TFSI petrol.

The V6 is going to cost you more at the pump with a claimed figure of 8.1 litres per 100km. You might want to wait for the PHEVs.

Don’t let the GLB35’s family friendliness fool you, this is an SUV that can get up and go.

The engine’s extra power and torque over the GLB250 are immediately felt behind the wheel, with the GLB35 accelerating with the vigour of an all-wheel-drive hot hatch, which makes sense given their similar claims.

And if you have one of the sportier drive modes engaged, the booming noise generated is also special – even if a lot of it is of the artificial variety, pumped into the cabin to make occupants feel like things are getting serious.

What is genuine, though, is the well-rounded transmission, which is characteristically quick with its upshifts. At the same time, it’s also relatively smooth, even at low speed, which has proven to be a challenge for dual-clutch units over time, but not here.

To earn the AMG badge, the GLB35 goes even further with other mechanical upgrades, including sports tunes for the suspension and steering.

Specifically, the GLB35’s independent suspension set-up not only consists of MacPherson-strut front and trailing-link rear axles with adaptive dampers, but also introduces new steering knuckles, transverse control arms on the front axle, and a stiffened subframe.

The resulting ride is actually quite good. Yes, the extra firmness over the GLB250 is noticeable – particularly in the sportier drive modes that stiffen the adaptive dampers all the way – but it’s by no means a deal-breaker.

That said, it’s worth noting our test vehicle was fitted with the optional 21-inch alloy wheels ($1990), so the GLB35’s like to ride even better on its standard package.

This is remarkable considering the handling improvements made, with the GLB35 managing body roll and pitch better than the GLB250 when pushing hard into and around corners, coming out of which grip is plentiful thanks to the all-wheel-drive system.

Thankfully, the standard-fit high-performance braking package consisting of 350mm front and 330mm rear discs with four- and one-piston callipers respectively helped it wash speed away with ease when attacking the twisty stuff with intent, even with 1857kg (kerb) to deal with.

Also on hand is electric power steering, which is speed-sensitive and has a variable ratio in the GLB35. Basically, it’s quicker when you want it to be, remaining on the lighter side in hand until you engage one of the sportier drive modes and weight is increased markedly.

While the new Q5 might feel classier, techier and generally more expensive and Q7/Q8-like on the inside, it's pulled off an even more impressive feat in the chassis department, which no doubt owes a lot to the entirely new PPC platform, because it feels more like a powerful Q3 to drive than the Q5 of old.

That's not a comment on interior or load space, it's just that it feels smaller and more spritely on the road. It turns in better, holds its line better and resists gentle understeer right up to the point where you wonder whether your co-driver has lost his mind or is trying to kill you both.

Seriously, the SQ5 can properly get up and boogie in Sport mode (Audi says one of the things it's proudest of with the new car is how much more noticeable the range of difference is between the relaxed, or 'Balanced' and 'Comfort', modes and the more aggressive ones) and you really have to be going beyond sensible to find the edge of grip.

The SQ5's V6 also makes the kind of noises that now sound weirdly wonderful in an Audi, when so many of the new offerings are electric. Choose to shift the gears yourself and this can be a properly involving machine, and quite impressive for an SUV.

What separates it from the kid of fun you could have in its cousin, the previous Porsche Macan with petrol power, is the steering. It's not terrible, and it is sharp, but it just lacks a bit in the feel and muscle department. Being generous you'd say it's easy to drive but you just know that if this had an R badge the steering would be so much better, and closer to Porsche and BMW.

The diesel TDI model does not make glorious noises, and the whines and groans it does make - which seem loud by Audi standards, it's usually very good at quietening its diesels down - do not encourage you to shift gears yourself or drive it in a sporty fashion. It is a workhorse variant, with plenty of torque, and for a certain kind of customer who cares not for sportiness or excitement I'm sure it's a fine option.

One thing I did not expect to be doing on an Audi Q5 launch is clambering up and over a rock strewn mountain on properly rutted and rough gravel tracks, but that was an option here so I took the 2.0 TFSI on the optional off-road adventure and I must say I was both surprised and impressed.

The Q5 is not a mountain goat, or a Land Rover, but despite feeling like I was doing the gardening in a shiny suit, I managed to traverse a track that felt too serious and intense for a soft roader, and did so with ease and in comfort. The air suspension raises the Q5 a full 45mm in Off-road mode, so ground clearance was no problem - nor did I encounter any boulders - but the way the Quattro system dealt with the dirty stuff was impressive.

Overall, I can see that this TFSI model is the sweet spot in the range in terms of value and performance, and it really is all the Q5 you could need. It never feels underpowered, unless you've just stepped out of the SQ5, and you get all the benefits of the chassis and handling upgrades.

Personally, though, I'd have the SQ5 just for the rorty V6 noises alone. It feels like something new, but also the end of something wonderful.

Obviously the new Audi Q5 has not been crash tested yet but Audi is confident of yet another five-star ANCAP rating, like the one the current car holds .

The new vehicle features more than 30 active-safety measures, which is literally too many to mention and takes advantage of its many, many radars. One gets the feeling this car could just about drive itself if the law would allow. Some inclusions are a rear parking aid with distance display, cruise control with speed limiter, lane departure warning and an attention and drowsiness assistant, all as standard.

Things like Active Front Assist, Evasion Assist, Turn Assist and Rear Turn Assist are likely to be part of options packages, but that's all still TBA.

There will also be twin ISOFIX anchor points, and top-tether points for child seats.

As with all Mercedes-AMG models, the GLB35 comes with a five-year/unlimited-kilometre warranty, which currently sets the standard for the premium market. It also comes with five years of roadside assistance.

The GLB35’s service intervals are long, at every 12 months or 25,000km (whichever comes first). Better yet, it’s available with a three-year/75,000km capped-price servicing plan, but it costs $2750, with the third visit alone incurring a $1300 charge.

All Audis are now covered by a five-year, unlimited-kilometre warranty, up from its recent offering of three years, which is better, but could be better still.

There's no news on what servicing arrangements will be because the new Q5 doesn't lob until Q3, but in general the brand will let you prepay your services, required annually, for the first five years, with the regular Q5 currently billed at $3140 and the SQ5 billed at $3170.