Mercedes-Benz GLB-Class vs Alfa Romeo Stelvio

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.

The Alfa Romeo Stelvio Veloce is the car you get when you want a sports car but happen to have a kid or two. Its ride comfort is on the lower end but it has heaps of power and enough features that it manages to slide into its price tag without feeling too cheeky. The back seat’s size will limit this to smaller families, though. And I would prefer to see better tech at this grade level, so this gets a 7.1/10 from me.

My son didn’t spend much time in this one but he liked the red paintwork. My mum, however, loved the power and sexy packaging. She gives it an 8/10.

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.

While the Veloce has had a facelift, the changes are so minor I would dare to ask, why bother?

The daytime running light signature has been tweaked but only die-hard Stelvio fans will notice it. I do like the larger 12.3-inch digital instrument display but surprisingly the multimedia screen remains on the smaller side at 8.8 inches.

Otherwise, there’s no denying the Veloce looks like an Alfa Romeo, staying true to its Italian heritage. It’s solid, with a 1903mm wide stance, but so robust that it moves away from words like 'sleek' or 'sexy'.

The black grille, 20-inch alloy wheels and red brake calipers make it look sports car mean and hint at what's under the bonnet.

The interior looks well made and it's got a bat cave element with the black headliner and panoramic sunroof. There's a plethora of soft touchpoints throughout and the circular air-vents found in both rows add some flair.

Overall, though, the interior is understated and if you’re looking for something as flashy as the exterior, you may be disappointed.

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.
 

The front row benefits the most in terms of space and features. I have stacks of headroom and legroom in the front seat and didn’t feel like I was too close to my passenger this week.

I like the comfortable electric seats and the fact you can adjust the side bolsters and under-thigh support.

Individual storage options are on the slim side throughout the car and it was something my mum and I found annoying on our road trip because there aren’t a lot of spots to put your little items up front. Think snacks, sunglasses, lip balm etc.

The two cupholders are really drink bottle holders because they’re too large to fit a small takeaway cup without popping the lid off but I like the large storage bins in each front door.

It's a tight squeeze in the back seat for my 168cm (5'6") height and that’s behind my driving position! It could feel a tad cramped back there for those with longer legs.

It’s also a bit awkward getting in and out of the back seat because of the large wheel arches.

The storage bins in the doors are too small to hold a drink bottle but the middle armrest has two cupholders and a phone holder.

Charging options are fantastic up front with two USB-A ports, one USB-C port, a 12-volt socket and a wireless charging pad to choose from. You even get an 'aux' jack, too.

The amenities in the back seat are okay and you get a couple of net map pockets, reading lights, a USB-A and C port, as well as directional air vents.

This Alfa has a no-nonsense approach with the other tech, though. I usually don’t mind that but the touchscreen multimedia system is a little too no-nonsense for this spec-level.

I found it to be laggy and too small. It also regularly turned itself off and rebooted. This happened a few times while needing satellite navigation directions, which was annoying.

Also on the sat nav, you can’t search for a general name of something, like a business, you have to input an address which meant using my iPhone anyway. It’s great that you get wired Apple CarPlay and Android Auto, though.

The digital instrument panel looks upmarket but isn’t properly customisable and I was disappointed the ambient lighting package only meant that there are lights in the footwells and a tiny overhead light. Adding some extra lighting would have transformed the night-time driving experience.

The boot is the highlight for me because you get a decent capacity at 499L. The load space is level and I like the back row's 40/20/40 split-fold. We had plenty of room on our road trip for luggage and shopping.

You get a temporary spare tyre and a retractable cargo blind. The latter is stiff enough to double as a shelf which is handy and a handsfree powered tailgate comes standard, as well.

There are three models for the Stelvio and ours is the mid-spec Veloce grade, which will cost you $82,950, before on-road costs. The pricing should make it competitive compared to its rivals but the features list isn’t as robust as it could be.

The interior gets most of the big-ticket items with leather upholstered sports front seats, extended leather trim on the doors and dashboard as well as a heated steering wheel.

Both front seats are electric with six-way power adjustment, powered side bolsters and four-way adjustable lumbar support. They also feature a heat function and extendable under-thigh support.

The luxury items continue with the panoramic sunroof, real aluminium accents throughout and a premium Harman Kardon sound system that boasts 14 speakers.

Other standard features include full LED adaptive 'Matrix' headlights, aluminium sports pedals, dual-zone climate control, keyless entry, push-button start and a handsfree powered tailgate.

It's the technology that lets the Stelvio down but I'll go into that later.

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.

The Veloce has a 2.0-litre, four-cylinder turbo-petrol engine that gives a maximum power output of 206kW and 400Nm of torque. It’s an all-wheel drive and has an eight-speed auto transmission which is very smooth. 

Checking out the specs I didn’t think this would be as powerful as it is. But it’s really fun when you need to put your foot down! I mean, it can go from 0-100km/h in just 5.7 seconds.

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 official combined cycle fuel economy figure is 7.0L/100km and my real-world usage came to 8.4L/100km.

I drove our test model hard but did A LOT of open road driving - 2051km to be exact - so I was happy with the average but I would expect it to be higher in the city.

Based on the official combined cycle number and 64L fuel tank, you theoretically should be able to get a driving range of around 914km but my real-world tests see that figure come in closer to 700km.

Alfa Romeo recommends a minimum 95 RON petrol be used for the Stelvio.

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.

The Veloce is downright fun to drive because of how damn responsive it is. There is plenty of power, so much so, that you’ll look forward to hitting the open road. 

The sporty steering makes for sharp handling and the car moves decisively. I have felt confident all week that it would do what I wanted it to do. It's wide stance also makes it hug the road like an old friend.

However, the suspension is also sporty, aka firm! The padded seats help soften the impact when you hit a bump but you’ll still know it when you hit one. There's also a resonating 'ker-thump' in the cabin, in case you didn't feel it.

The big thing that marred the driving experience for me, at least for a longer trip, is how loud road and wind noise are at higher speeds. It’s loud enough that you need to raise your voice to talk, which I didn’t enjoy.

The Veloce earns back points with how easy it is to park and it handles those stupidly small hotel car parks extremely well.

I don't rate the reversing camera, though. The quality of the image is terrible for this grade-level.

The Stelvio has most of the major items that I like to see on a family car and the standard safety features include adaptive cruise control, forward collision warning, driver attention monitor, traffic sign recognition, lane keeping aids, blind-spot monitoring, rear cross-traffic alert, a reversing camera, daytime-running lights, front and rear parking sensors, and a tyre pressure monitoring system.

It's important to note though that the safety systems only scored a 60 per cent with ANCAP.

It has autonomous emergency braking with pedestrian and car detection and is operational from 7.0 - 200km/h.

The Veloce has a maximum five-star ANCAP safety rating but it was done ages ago in 2017, which means it will expire this December. It also only has six airbags, which is low for a family car but the curtain airbags cover the back row.

There are ISOFIX child seat mounts on the outboard rear seats and three top tethers in the second row but two seats will fit best.

You can just squeeze a 0-4 rearward facing child seat in but it will encroach on front passenger comfort.

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.

The ongoing costs aren’t too shabby on the Stelvio because it comes with a five-year/unlimited km warranty and you also get five years roadside assistance.

It’s a 24/7 complimentary service that covers a host of items but check out the terms and conditions for more information.

There’s capped priced servicing for five years or up to 75,000km, whichever occurs first.

Services cost an average of $573, which is competitive for the class and servicing intervals are good at every 12 months or 15,000km, whichever occurs first.