BMW 120i vs Mercedes-Benz Glb250

What's the difference?

I’m the first to say the 1 Series is kind of the ugly duckling of the BMW family, but those looks grow on you, especially when you consider that this is exactly what a BMW hatch should look like. That this is one of the only rear-wheel-drive hatches left on the planet makes it even more special – and of course engaging to pilot. The downside is the price and the lack of value from a features perspective, plus safety could be bolstered with more technology. Still, anybody who likes to drive will commend you on your choice of a BMW.  

Well, Mercedes-Benz has done it again, finding (or creating, depending on your position) a niche and filling it. But unlike some others that preceded it, this example is a good one.

Despite its safety and handling shortcomings, the GLB 250 looks the part, is undeniably practical and serves up surprising performance, which means it's a winner in our books.

The 1 Series looks exactly how a BMW hatchback should. I know that sounds silly but what I mean is BMW could easily have designed something that was proportioned more like other hatches; that popular sort of bubble on wheels.

Instead, what you have is a hatch that retains BMW’s traditional attributes – there’s the long nose, the cabin set back, the high sides and the wheels placed almost at the very corners.

Seriously, look at the image of the orange 1 Series side on, now hold your out your hand and use it to cover just the windows – see, it looks just like a BMW 2 Series convertible. Does it look good? To me it does, right up until you get to the hatchback, and then it looks a bit awkward. But I do admire BMW’s designers for creating something unique looking.

That orange 120i ('Sunset Orange' is the official colour) is the most recent 1 Series I’ve tested. Those wheels aren’t standard, they’re 18-inch M ones and they are part of the optional 'M Sport Package', which also includes the body kit, complete with side skirts and the lower grille in gloss black.

The 1 Series is as affordable as BMWs get, but it’s still a real BMW. The cabin, for example, looks much like  every BMW, only smaller.

There’s the large, slab-like dash with the display sitting atop, below are the air vents and below that is the radio and then the climate-control dials. It’s a stack that’s kept its familiar order and shape on nearly all BMWs for what seems like forever.

The centre console has a similar layout as the one in a 3 Series or 5 Series or any Series, with the shifter and rotating media controller. Even the doors have the same design as those cars higher up in the BMW family, with the big moulded pockets and large pull handles.

The cabin isn’t as ‘blingy’ as the new Mercedes-Benz A-Class, but it’s not as plain as the Audi A3.

That steering wheel is part of the M-Package too, but the leather upholstery is a separate option.

The signs that this isn’t a more expensive BMW are the manual handbrake, the compact instrument cluster with analogue dials, the small dash-top display and the fact that  there’s a lot less real estate to be covered by trim pieces and material, which doesn’t have the same high-quality feel as those fancier models.

The cabin isn’t as ‘blingy’ as the new Mercedes-Benz A-Class, but it’s not as plain as the cockpit of an Audi A3 – it’s somewhere in between; refined and well designed.

At 4.3m end to end, the 1 Series is 16mm shorter that the A3 Sportback and 20mm narrower, at just over 1.7m across.

These days, so many SUVs try to toe the coupe line by incorporating a sloped-back roofline –and yes, the same is predominantly true of those that call themselves traditional wagons.

That said, prepare yourself for a bit of a throwback, because the GLB 250 is about as faithful to the classic two-box design as it gets in 2020, which we absolutely love.

Up front, it's undoubtedly a Mercedes-Benz SUV, albeit with a much squarer appearance. Simply put, the GLB 250 looks butch.

We particularly love its simple LED headlights, classic grille and strong bumper, which make it look smart but capable.

Around the side, the GLB 250 is a typical small SUV with black plastic cladding covering its wheelarch extensions and connecting skirts.

The otherwise plain design is spiced up by a sporty set of alloy wheels (our test vehicle was fitted with 18-inch items with 235/55 runflat tyres) and an unusual kink in the glasshouse, around the C-pillar.

The GLB 250 is at its best at the rear, where it exudes presence, with the tough look punctuated by the droopy LED tail-lights and a prominent bumper, which houses a diffuser element flanked by dual exhaust tailpipes.

Inside, the GLB 250 quickly reveals itself to be a technological tour de force. And yes, if its cabin looks familiar, it's because its mechanical relatives (A-Class, B-Class, CLA and GLA) more or less have the same cockpit.

As expected, a pair of 10.25-inch high-resolution displays sit side by side proudly atop the dashboard, with one the central touchscreen and the other the digital instrument cluster.

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

The GLB 250 is properly premium where it counts. Sure, trainspotters will notice the black 'Artico leather' upholstery covering the steering wheel, seats, armrests and door shoulders is of the artificial variety, but it's inoffensive, unlike in some of its SUV siblings.

Soft-touch materials are used for the upper dashboard, leaving hard plastics for the lower sections, which is exactly what you'd hope for at this price.

While a black headliner lends itself to a dark cabin, brighter highlights come by way of the metallic trim used throughout, notably on the steering wheel, dashboard, doors and centre console. And let's not forget the sensational ambient lighting. It's very, very cool.

And mercifully, gloss-black accents are limited to the surrounds of the steering wheel, turbine-style front air vents, dual-zone climate controls and centre console. The less scratches and fingerprints the better, we say.

The 1 Series’ boot has a cargo capacity of 360 litres, which is more than the boot space of the Audi A3 Sportback (340 litres) but less than the new Mercedes-Benz A-Class’s 370 litres of luggage room.

What does that mean in real-world terms? It’s not a lot of space, and you might struggle to get a pram in, so check that  beforehand if you have small ones. That said, there was enough room for two carry-on sized bags, a computer bag and a scooter when my wife and I went on a weekend away with our four year old.

Space in the second row is also limited. Headroom isn’t too bad, but at 191cm tall I can’t sit behind my driving position without my knees digging into the seatback. I can just fit back there in the A3 and I have even more room for my knees in the A-Class.

Room up front is good with plenty of shoulder, head and elbow room for somebody my size.

Storage could be better: you’ll only find cup holders up front (two of them), the centre-console storage bin is small and so are the door pockets in the rear, but all is not lost because the door bottle holders in the front are massive, the glove box is a decent size and there are nets on the backs of the front seats.

It’s good to see directional air vents in the second row and a 12V power outlet, but there aren’t any USB ports back there – if you want to plug in a device there’s only one and it’s up front, along with another 12-volt outlet.

The rear doors appear large from the outside but the aperture to get in and out isn’t huge – again look at the images to see what I’m on about.

Measuring 4638mm long (with a 2829mm wheelbase), 1834mm wide and 1659mm tall, the GLB250 is closer in size to the GLC than the GLA, making it a small SUV on paper only. And that only means good things when it comes to practicality.

For example, cargo capacity with the 50/50 split-fold third row stowed is strong, at 565L, but it can be increased to a massive 1780L with the 40/20/40 split-fold middle bench also out of action. If six or seven seats are in use, though, there's limited space to play with.

That said, the boot is still very well thought out, as evidenced by its massive aperture, lack of a load lip, and flat floor, which make loading bulkier items a lot easier. And yes, its load cover can actually be stored underfloor when not in use!

There are also four tie-down points, two bag hooks, a side storage net and a 12V power outlet to make things that little bit easier, while the rear seats can be operated from behind.

Speaking of which, let's cut straight to the point: Mercedes-Benz claims the third row can accommodate occupants that are up to 168cm tall thanks to the middle bench's ability to slide fore and aft by up to 140mm.

Therefore, my 184cm (6.0ft) frame is a little too tall, but I was still able to sit in the back, albeit not in complete comfort, with about a centimetre of legroom and negligible headroom and toe-room on offer.

The biggest challenge for any occupant is getting in and out in the first place, as the middle bench doesn't tumble forward for easy access. Needless to say, you're not going to look graceful here. Children can learn to deal with it, but adults won't be excited by the prospect.

So, the middle bench is where it's at, even when slid all the way forward. Behind my driving position, it provides about a centimetre of legroom, but this can be increased to a generous 8.0cm by sliding it all the way back.

Either way, plenty of toe-room is available alongside more than an 2.0cm of headroom – and that's with a dual-pane panoramic sunroof fitted.

The second row can accommodate three adults at a pinch, partly thanks to the short transmission tunnel that ensure there's just enough space for three pairs of fully grown feet across the two footwells. Children will be fine.

While we're on the topic, four ISOFIX and five top-tether anchorage points are on hand for fitting up to four child seats across the second and third rows, making the GLB250 a genuine option for families.

In-cabin storage options are numerous, with the central storage bin on the larger side despite housing a pair of USB-C ports, and the glove box is also pretty handy, even if it does have an odd shape. There's also a sunglasses holder in front of the rearview mirror.

The centre console's cubby doesn't lend itself to storage, though, as it's more or less taken up by two cupholders, another USB-C port and a wireless smartphone charger.

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

Second-row occupants are further treated to a fold-down armrest with another pair of cupholders, although they're of the retractable (flimsy) variety.

These passengers also have access to two USB-C ports, which fold out below a small cubby and a pair of air vents, which are located at the rear of the front centre console. There are also storage nets on the front seat backrests.

And don't make the mistake of thinking the third row misses out on the action, as two cupholders (one regular, the other small) divide the seats, which have their own USB-C ports and device straps to the sides.

Priced from $73,900 plus on-road costs, the GLB 250 sits in the middle of the GLB range, above the $59,900 GLB 200 and below the $88,900 AMG GLB 35.

Standard equipment not already mentioned in the GLB 250 includes dusk-sensing lights, rain-sensing wipers, power-folding side mirrors, aluminium roof rails and a power-operated tailgate.

Inside, satellite navigation with live traffic, Apple CarPlay and Android Auto support, digital radio, a 225W sound system with nine speakers, keyless entry and start, power-adjustable comfort seats with heating and memory functionality, auto-dimming mirrors and illuminated scuff plates feature.

As with most Mercedes-Benz models, the GLB 250 has a long and expensive options list, so the purchase price can blow out quickly if you're a little too keen.

That said, aside from some safety equipment we'll cover momentarily, there's really not that much missing to begin with, making the GLB 250 the sweet spot in the GLB range.

Either way, our tested vehicle was finished in $1490 'Mountain Grey' metallic paintwork, which is one of six extra-cost exterior colour options.

As mentioned, the GLB 250 is a unique proposition, so it's only comparable rival, the $67,852 Land Rover Discovery Sport P250 SE, is from the segment above, despite its similar size.

As you step up through the grades the engines become more powerful. The entry-grade 118i has a 1.5-litre three-cylinder turbo-petrol making 100kW of power and 220Nm of torque, while its diesel twin has a 2.0-litre turbo-four making 110kW and much more torque at 320Nm.

The 120i has a 2.0-litre turbo-petrol four-cylinder and an output of 135kW and 270Nm. Then above that is the 125i, which is getting into performance territory with its 2.0-litre turbo four petrol making 165kW and 310Nm.

But all hail the M140i and its beautiful 3.0-litre six-cylinder turbo-petrol, with 250kW and 500Nm that it wants to share with you.

All cars are rear-wheel drive and all have an eight – hang on, that’s important: all cars are rear-wheel drive. Do you know how many other hatchbacks are rear-wheel drive? Try next to none – not the A-Class, not the A3, not the Golf. Rear-wheel drive is favoured for performance cars because it offers better balance and better acceleration thanks to the weight shift to the rear of the car. BMW has long claimed that RWD is one of the keys to its "sheer driving pleasure".

Now let me finish the sentence... all have an eight-speed automatic, and it’s a beauty – a little slow, but smoother for driving than a dual clutch, and way more fun than a CVT.

But wait, because there’s a manual gearbox, too. It’s a no-cost option and you can get it on any variant apart from the 125i.

The GLB 250 is motivated by a peppy 2.0-litre turbo-petrol four-cylinder engine that produces 165kW of power from 5500-6100rpm and 350Nm of torque from 1800-4000rpm.

This unit is mated to an eight-speed dual-clutch automatic transmission that's solid on debut, while Mercedes-Benz's 4Matic all-wheel-drive system is also in tow.

Thanks to this combination, the GLB250 can sprint from a standstill to 100km/h in a brisk 6.9 seconds while on the way to its top speed of 236km/h. It also enables a maximum braked towing capacity of 2000kg.

BMW says its most efficient petrol engine in the 1 Series range is the three-cylinder in the 118i, which uses just 5.2L/100km after a combination of urban and open roads.

The diesel unit in the 118d will use 4.2L/100km. Let that sink in for a moment – petrol engines are becoming so fuel efficient that they’re rivalling diesels, which have long been lauded for their frugality.

So don't just buy the diesel just because it’s more efficient, because you may never recoup the extra money you paid over the 118i.

Thirstier but still super-efficient is the 2.0-litre in the 120i. BMW’s claim is 5.9L/100km. During my week with the 120i I put 413km on the clock and used 15.57 litres doing so (measured at the pump), which comes to 7.7L/100km. The car’s computer said 7.8L/100km.

That’s great fuel economy, even if it is higher than the claimed figures. The 125i’s official fuel consumption is also 5.9L/100km.

It’s not surprising that the M140i, with its 3.0-litre six-cylinder turbo-petrol engine, is the least fuel efficient but its official figure of 7.1L/100km is still low.

The GLB250's fuel consumption on the combined-cycle test (ADR 81/02) is 7.7 litres per 100 kilometres, while its carbon dioxide emissions are 173 grams per kilometre. Both claims are pretty solid.

In our real-world testing, though, we averaged 8.9L/100km over 180km of driving skewed towards country roads over highways. As such, it's a strong result, especially when you consider my lead foot.

For reference, the GLB 250's 60L fuel tank takes 95RON petrol at minimum.

If I could run into a showroom and take whichever 1 Series I wanted it’d be the M140i – and not just because it would give me the best chance of outrunning the police after they discovered the break-in, but because the thing is so much fun to drive.

It’s also the most expensive, of course, but it’s worth it for that screaming straight six and for its agility.

You’ll have fun, though, in every grade of the line-up – they’re all engaging to pilot with great driving positions, good pedal feel and that eight-speed auto is smooth in traffic yet will shift hard when you have your race face on.

You might find the 118i, with its three-cylinder, a little under powered, especially with five people and their bags on board. If you’re keen on this grade, then consider the diesel, which will give you more torque. Our 120i test car proved to have enough oomph for overtaking and moving quickly when needed.

The 125i is less tame, with its throatier exhaust note, firmer ride and better handling thanks to the M suspension.

If you plan on choosing the M Sport Package for, say, the 120i keep in mind that you’ll lose the comfortable ride these cars have on their standard tyres.

Our 120i had the pack and while the body kit looks tough, the 18-inch alloy wheels shod in low-profile rubber (225/40 R18 Bridgestone Potenza 5001s front and 245/35 R18 at the rear) meant the ride was overly jarring on bad roads.

Given that Sydney was my test bed for the 120i and its roads are shocking, the ride was less than comfy. The M-sport suspension will only make the ride less comfortable, but in return you’ll have a 120i with better handling.

Run-flat tyres are common on BMWs and you may have heard of a few issues surrounding noise and a harsher ride. While that can be true, it's the price you pay for having a tyre you won’t immediately have to change if you get a puncture. Only the 120i and the M140i don’t have run-flats as standard.

Families are sure to be pleased by the way the GLB 250 drives, because it can be summed up in one word - comfortable.

A lot of the credit has to go to the GLB 250's independent suspension set-up, which consists of MacPherson-strut front and trailing-link rear axles with adaptive dampers.

The ride is sensational, with the GLB just wafting along on the highway. Take it onto a coarse-chip road and this quality does suffer, but not much. That said, road noise does become more of a factor on lower-quality tarmac.

It's worth reiterating that our test vehicle was fitted with 18-inch alloy wheels, which are an inch smaller than the GLB 250's standard set that come with lower-profile tyres (235/50), so the chances are our glowing review doesn't apply across the board.

There were also some noticeable underbody creaks when navigating speed bumps and the like, but hopefully they're just specific to our test vehicle.

What will be more consistent, though, is the wind noise generated by the side mirrors at highway speeds. It penetrates the cabin and disturbs its serenity more than any underbody creak ever could, so turn up the sound system.

Handling-wise, the GLB 250 performs just as well as any other non-performance SUV with seven seats and a high centre of gravity, with body roll prominent when cornering with intent.

Put the aforementioned adaptive dampers into their sportiest setting and body control improves somewhat, but you'll still be conscious of the GLB 250's 1721kg kerb weight.

Either way, grip is quite good due to the all-wheel drive system, which works hard to keep things on track. Its front bias is apparent, though, with the GLB 250 running wide of its line at times.

While it's not the sharpest handler, the GLB 250 is far from awful, partly thanks to the electric power steering's variable ratio set-up.

This system goes from lock-to-lock with ease at low speed, making parking manoeuvres much easier to perform, while it's far more stable at high speed.

However, it's not the first word in feel despite being well-weighted… until you make the mistake of engaging the GLB 250's Sport drive mode, which adds too much artificial weight.

Speaking of sporty, the GLB 250 is surprisingly fun in a straight line thanks to its strong engine and transmission combination.

I particularly enjoyed the 2.0-litre turbo-petrol four-cylinder engine's mid-range, headlined by a useful 350Nm of max torque from 1800-4000rpm.

Once it comes and goes, though, it's a 'long' wait until 165kW of peak power kicks in from 5500-6100rpm, so best to up-shift early.

Doing so is very easy due to the new eight-speed dual-clutch automatic transmission, which serves up gear changes that are only smooth, but quick.

Engage Sport drive mode and the engine and transmission become that little bit sharper, with the former's throttle response improved, while the latter adopts more aggressive shift patterns.

That said, it's best to resist that temptation, as the GLB 250 is at its best when driven calmly, while it exudes family-friendly comfort.

ANCAP awarded the GLB range its maximum five-star safety rating in 2019.

Advanced driver-assist systems extend to autonomous emergency braking with pedestrian and cyclist detection, lane-keep assist, blind-spot monitoring, rear cross-traffic alert, traffic sign recognition, driver attention alert, tyre pressure monitoring, hill-descent control, hill-start assist, high-beam assist, park assist, a reversing camera and front and rear parking sensors.

What's missing? Front cross-traffic alert, steering assist and adaptive cruise control all form part of the $1990 'Driving Assistance Package', which was fitted to our test vehicle but should be standard for the money.

Other standard safety equipment includes nine airbags (dual front, front-side, curtain and rear-side plus driver's knee), anti-skid brakes (ABS), electronic brake-force distribution (EBD) and the usual electronic stability and traction control systems.

The 1 Series is covered by BMW’s three-year/unlimited kilometre warranty. Servicing is condition-based – the car will let you know when it needs a check-up.

BMW offers two service packages, which cover the car for five years/80,000km: the Basic is $1340 and the Plus costs $3550.

As with all Mercedes-Benz models, the GLB 250 comes with a five-year/unlimited-kilometre warranty, which is the gold standard for the premium market. It also comes with five years of roadside assistance.

The GLB 250's service intervals are every 12 months or 25,000km, whichever comes first. It is available with a three-year capped-price servicing plan for $2650, but its pricing can be reduced by $500 if paid upfront alongside the vehicle.