Mercedes-Benz GLB-Class vs Tesla Model Y

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.

If you like the five-seat Model Y, then you'll like the six-seat L version even more. I think this the best example of Tesla's electric SUV to date, and the cabin layout just makes a lot of sense, and would suit plenty of families who don't need to squeeze someone into a compromised middle seat.

Note: The author, Andrew Chesterton, is a co-owner of Smart As Media, a content agency and media distribution service with a number of automotive brands among its clients. When producing content for CarsGuide, he does so in accordance with the CarsGuide Editorial Guidelines and Code of Ethics, and the views and opinions expressed in this article are solely those of the author.

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.

Spoiler alert - it looks a lot like a five-seat Model Y, doesn’t it, albeit a slightly bigger one. And you’d have to be a bigger Tesla head than me to immediately spot the differences at a glance.

The wheelbase is longer, the rear doors are bigger as are the rear 3/4 panels and the roof line is higher, helping with headroom in the third row.

Still, safe to say if you like the look of the five-seat Model Y, you’ll like this one. And if you hate it, well, good luck.

The alloys are 19-inch and shaded by the aerodynamic caps and there are light bars front and rear which debuted on the updated five-seat Model Y when it arrived mid-last year.

The bigger changes are inside, of course. I promise we’ll get to the second and third rows in the Practicality section, but let’s talk about the look and feel first.

There’s a love/hate relationship with Tesla’s stripped-back aesthetics, and I’m probably somewhere in the middle. I like the airiness of the space in the cabin, and I think it feels nicely put together, and I really dig the contrasting fabric used on the doors and dash which add a little visual interest to the cabin.

But I hate using the central screen to select a gear and I hate not being able to see how fast I’m going without turning my head. A head-up display would work wonders in the Model Y L cabin.

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.
 

Captain’s chairs are simply a more luxurious version of second-row seating. With that there is no argument and the heated and cooled chairs that occupy the second row of the Model Y L are pretty good examples of them.

Space, both knee and headroom, is ample, and you can adjust each seat individually if you want to grant a bit more space to any third row occupants. Armrests deploy at the push of a button — as do the two hidden cupholders — and it really is easy to settle in and get comfy.

The third row is a bit more hit and miss. I’m 175cm and found I had enough legroom and headroom, but the big plastic mouldings that emerge from each side of the Model Y (which house a cupholder) are a miss. They end up pushing you into the seat next to you, and I can foresee a lot of arm rubbing with anything like two adults back there.

Also confusing is how to actually get out of it. You can fold the seat in front of you flat, but then you have to climb over it. I found it easier to just walk out between the seats.

There are another two USB-C ports in the rear row and you get air vents but no temperature controls. 

The Model Y L stretches 4969mm in length, 1668mm in height and 2129mm in width, which is roughly 18cm longer and 4.5cm taller than the five-seat model. The extra space doesn’t sound like that much, but start dropping rows and you find a heap of storage space.

Both the second and third row stow electronically from the boot, but with them in place you’ll find 420 litres of storage in the double-layer boot. Drop the third row, and that number grows to 1076 litres. With the third row folded there is a massive 2423 litres of space. The frunk serves up another 116 litres.

There’s also room (and the ISOFIX attachment points) for four child seats.

The Model Y L sits smack bang between the $68,900 Long Range AWD and the $89,400 Performance, setting you back $74,900, before your on-road costs. It’s also the only three-row option in the Tesla family.

Aside from people movers, we’re not swimming with options in the three-row electric space, either. The Kia EV9 will get it done from $97,000, the Hyundai IONIQ 9 starts from around $120K and the Volvo EX90 is more expensive again (from $124,990).

Anyway, in Tesla land, the Model Y L rides on 19-inch alloy wheels, has a glass roof, automatic wipers and Tesla’s smartphone access key, as well as the little credit-card swipe.

Inside, there’s a 16.0-inch central screen that handles everything. And I mean everything. It's your gear selector, your speedometer, and everything else, too. There’s no Apple CarPlay or Android Auto, but you can access things like Spotify and podcasts through the in-built apps and the on-board navigation system is a good one, too.

All of that pairs with a 19-speaker sound system, and there are dual wireless charge pads. All three rows of seats are heated, while the first and second row get ventilation, too.

A second 8.0-inch touchscreen in the middle row then handles things like the seat heating or cooling, music and games to amuse the kids. And the Model Y L also debuts V2L, or Vehicle to Load, for Tesla in Australia, using a connector in the external charger.

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 Model Y L gets Tesla’s dual-motor AWD powertrain, with two electric motors producing a total 378kW and 590Nm. That’s enough, Tesla says, to knock off the sprint to 100km/h in five seconds flat.

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.

Tesla is always a little vague when it comes to the size of its batteries, but reports point to the Model Y L carrying a 84Wh (useable) NMC battery.

Whatever the specifics, the range is strong, with Tesla promising a 681km driving range on the WLTP combined (urban/extra-urban) cycle.

It’s also set up for 250kW DC fast charging, which should see you take on 288km in 15 minutes, according to Tesla.

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.

Honestly, it feels like the Tesla Model Y has grown up. I didn’t love earlier iterations of this car and I found the Performance to be fast but lacking any emotional fizz.

This one, though, feels solid and composed, and the power on tap (of which there is ample) is more about effortless progress than it is attempting to offer sports car excitement.

The steering is now nicely weighted and feels direct enough without being too sharp, and the cabin is well insulated, with often the slightly off-putting sort of rubbing noise the steering wheel makes when you turn it the only intrusive sound.

One drawback is a ride that definitely errs on the side of firm. This Model Y L gets electronic damping designed to iron out some of the more jagged stuff, but it still feels brittle in places, and you can definitely feel some sharpness in the cabin. Now, to be fair, it’s not too firm for me, but it might be for you.

Another is a bizarre turning circle which constantly reminds you you’re driving a big bus, especially when you try to complete a tight three-point turn.

But despite its stretched dimensions, I found the Model Y L easy to drive and park in the city, and once you're up to speed with Tesla's operating system (there's no Apple CarPlay or Android Auto), then the screen is pretty easy to use, too.

The Model Y L gets the same maximum five-star ACNAP safety rating as the rest of the Model Y range, with nine airbags (up from seven in the five-seat model), and things like AEB (Auto Emergency Braking), lane-keeping assist, 'Forward Collision Warning' and blind-spot monitoring all along for the ride.

Interestingly, the curtain airbags from the five-seat version haven't been replaced, with coverage still only extending to the second row. New airbags have instead been added for third-row occupants.

One more analogue quirk of the Tesla Model Y L is the thick B-pillar, which does a good job of almost completely obscuring driver-side blind-spot checks (for those of us who still like to do those manually).

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.

Tesla warranty is a these-days-underwhelming five years and unlimited kilometres, while the high-voltage battery is covered for eight years or (a wildly specific) 192,000km.

There’s also five years' of roadside assistance, including puncture repair (a good thing, given the lack of a spare wheel). I also couldn’t find a puncture repair kit and later research suggests Tesla sells them, rather than provides them as standard.

Tesla servicing is condition-based, so there’s no fixed schedule, with a summary on the car’s touchscreen providing a record of when vehicle maintenance was last carried out and prompts for when they should be performed next.

In the absence of a combustion powertrain the emphasis is on things like wheel rotation, balancing and alignment, brake fluid testing, air-con servicing, camera precision, radiator cleaning and high-voltage battery maintenance.

Expecty a ‘Vehicle Health Check’ to come in under $300 with ‘General Diagnosis’ at around $270 per hour.