BMW X4 vs Mercedes-Benz GLA35

What's the difference?

Okay, so the BMW X4 xDrive30i is neither an ass nor an elbow, to be fair, it's more of a bulky shoulder muscle, or two.

I can't say I'll ever love the X4, the idea of it is a bit too weird for me, but I can't help admiring the way it looks and the way it drives.

It's a bit like a sedan on steroids - or an SUV on a diet, depending on your perspective - but that doesn’t take away from the fact that it’s fun to drive, comfortable and retains just enough coolness, and just enough practicality, to make it worthwhile.

Fast and small SUVs from Germany have arrived thick and fast over the last couple of years and of course Mercedes has to show off by having two, the GLA 45 will be along shortly.

A new addition to the GLA range, the GLA 35 is a welcome one, a step down from the brink of madness that will undoubtedly be the GLA 45 while putting itself into combat with the X2 M35i.

It's fast, fun and for a family, it's reasonably roomy, a sensible upgrade to an A 35. It's not cheap, but that doesn't ever seem to have stopped Mercedes buyers. I'm pretty sure the GLA 35 will be no exception.

So here's the thing. Obviously I have a personal beef with the existence of vehicles like this, but my eyes cannot deny the facts - the X4 looks fantastic. It's muscular, imposing and smooth all at once. Unlike the X6, a bigger and less visually successful attempt to play the same styling tricks with an X5, it doesn't have a ridiculous rear view that looks like it shoulders and buttocks have been fused (although it's hard to miss just how small the rear window is).

Even more impressively, there's no denying it looks better than the X3 that gave birth to it, so I can easily see why someone in a BMW showroom could be drawn to it. At least until they sit inside.

If the exterior style and eye-catching Sophisto Grey metallic paint don’t make an immediate impression then your eyes will surely widen at the interior, resplendent with bold Tacora Red seats, Aluminium Rhombicle trim finisher and the kind of sleek, classy styling that BMW excels in. 

Both the adjustable ambient lighting on the doors (we were partial to lilac) and door projectors that shot out what looked like robot wings onto the ground every time we hopped out of the X4 at night walked a fine line between futuristic cool and “parked out the front of a nightclub entrance” chintz, but over time the scales tipped more to the former. 

The big differentiator between the X4 and X3, of course, is the sloped coupé roof, a design feature that may make the X4 look a little cooler, but at the expense of cabin space, but more of that in a moment.

The new GLA's styling is much more obviously an SUV. One could say Mercedes was a bit timid first time around, but just about every car maker's first small SUV attempt was having a bet each way. Mercedes, however, really phoned it in, but got lucky because it worked. Put that down to the power of the three-pointed star. 

By the same token, it's not a wild departure from the theme set by the A-Class, but with thematic influences from the GLC. The AMG version now pick up the Panamericana grille and a more aero-aggressive front bumper, skirts and rear bumper, but does keep the tough unpainted wheel arch extensions. The AMG Night Package - which every other brand seems to call a black pack - adds a bit of menace.

Inside is almost indistinguishable from an A, which is a very good thing. The GLA ups the ante with the excellent, squared-off AMG steering wheel and a few extra buttons to choose the chassis and engine settings. The seats have lairy red inserts that might be a bait and switch to get the performance seats but that's the only mis-step in what is an otherwise excellent cabin.

For a car that is very much a mid-sized SUV on the outside, the interior can feel a bit too snug, like you’re driving a compact car that’s tried on a suit a few sizes too big (for reference, I’m 175cm tall - above-average height drivers may find the snugness soon turns to claustrophobia). 

While comfortable - it is BMW we’re talking about, after all - there’s not an overly abundant amount of headroom available, a feeling that becomes more pronounced should you shut the big moon roof.

My two children felt slightly too close to “you’re annoying me” distance from one another, which is to say this isn’t really the kind of car you should be getting if you plan on regularly ferrying about passengers in the rear who are bigger than a child. But I really don't think many people with kids would choose the X4 over the X3.

Boot space also takes a hit when compared to the X3 (550 litres versus 525-litres in the X4 - I was surprised the difference wasn't larger - although that expands to 1430-litres with the rear seats folded down. 

The boot opening is also mouth-shaped, which makes packing in wide-load items more of an issue.

Cupholders are plentiful - two in the front, two in the rear, and bottle holders in each door - and there’s a decent-sized storage cubby in between the front two seats. 

The sloped roof, and big fat A pillars, also result in the X4 being a bit more pinched at the rear, which is not especially great for visibility, with the vehicle’s blind spots taking some getting used to.

There are two key stats worth knowing, particularly if you're a current GLA owner wondering what the point of an upgrade might be. The MFA2 platform on which it rides has a longer wheelbase and wider track to liberate more room for people and stuff.

The rear seats are roomier than the old car and make for a more pleasant journey for taller folk, who also have more headroom than in the old car. While we're back here, you get bottle holders in the door but, crushingly, there is no armrest and no cupholders.

Things improve in the front with a pair of cupholders and a wireless charging pad that fits larger phones and a long, shallow bin under the armrest.

The boot holds an okay 435 litres (the Audi Q3, by comparison, has a massive 530 litres) seats up and 1430 litres seats down and has a nice flat loading lip to floor relationship, to go with the powered tailgate.

One of the reasons there is a 35 version of both the A and the GLA is that the 45 versions are so much more expensive than the 250 models that there was a gap you could drive...well, another spec level through.

That's not not to say the GLA 35 is cheap - starting at $82,935, you're still paying a hefty premium of $15,000 over the GLA 250 4Matic. Here in Australia, that buys you 20-inch alloys, a nine-speaker stereo, dual-zone climate control, reversing camera, keyless entry and start, front and rear parking sensors, active cruise control, electric front seats with heating, sat nav, auto LED headlights, leather seats and steering wheel, auto parking, power tailgate, auto wipers, panoramic sunroof and wireless phone charging.

The MBUX entertainment system is superb. While it does have wireless charging, you do have to connect via USB to get Apple CarPlay or Android Auto up on the second of the crisp 10.25-inch screens. The media screen works as both a touchscreen and you can run it from the pad on the centre console. And a number of the many buttons on the steering wheel.

You can get the signature AMG shell seats for $3290 (good if you're not, er, generously proportioned) as well as 21-inch wheels for $1990 which I think look far too big in the arches and quite possibly ruin what's left of the ride. You can also go all boy-racer with the Aerodynamics Package for $2990. Tick a few boxes and you can easily get the GLA 35 to the mid-$90k mark.

My car had the Communications Package which has three more speakers for a total of 12 and rather usefully, a head-up display, all for a stiff $2490.

Five of the GLA's colours cost $1490 (Cosmos Black, Denim Blue, Mountain Grey, Iridium Silver and Digital White), one is $1990 (Patagonia Red), not even white is free but at least it's only $500 while Night Black is the sole freebie.

Now, prepare to be confused. In the past, the 3.0 in the xDrive3.0i nomenclature might have led you to believe you'd bought a BMW with a 3.0-litre straight six engine. But in this case, you have not, the 3.0 just means you have a more exciting version of the 2.0; a TwinPower turbo 2.0-litre inline four-cylinder engine, making 179kW and 353Nm that the xDrive system delivers to all four wheels. 

The claimed zero to 100km/h time of 4.9 seconds feels completely realistic as this engine has plenty of poke. Put it in the Sport setting and you'll get some serious shove. Indeed, the switch between Comfort and Sport is very noticeable and changes the character of the car entirely.

The transmission is an eight-speed conventional torque converter automatic gearbox that’s both smooth and responsive. 

Under the bonnet is a 2.0-litre four-cylinder turbo with 225kW at 5800rom and 400Nm between 3000 and 4000rpm. Merc engine-spotters will spot that it's not a hand-built  engine with Fritz or Heinz's signature on a little plate like the "proper" AMG engines do.

Called M260, it's the GLA250's basic setup with more cooling, a water to air chargecooler, its own air intake and a twin-scroll hotside turbo that spins up nice quickly given its proximity to the exhaust header.

There is also an AMG exhaust with a flap you can open at startup by pulling one of the gearshift paddles for what Mercedes calls an Emotive startup - one imagines this will inspire some emotive language from your neighbours if you fire up at 6am. The paddles operate an eight-speed twin-clutch transmission driving an AMG-calibrated all-wheel drive system that can send 100 per cent of power to the front wheels and a maximum fifty per cent to the rear. An off-road mode locks the torque split to 50:50 if you're keen to take this thing into the loose stuff on shiny 20-inch wheels and sporty road tyres.

Mercedes claims you'll crack the run to 100km/h in 5.2 seconds. Yikes.

The X4’s 65-litre tank needs to be 95-octane at a minimum, and BMW’s claimed combined fuel consumption is 7.9 litres per 100km. The temptation to use its rorty little engine is going to push you higher, though - you chose the one with the 3.0 badge on it after all - and we averaged 10.9 litres per 100km in our week together, which was mainly city driving, to be fair. 

The GLA carries an official combined cycle figure of 8.0L/100km. Over a reasonably wet weekend and a motorway-heavy run down the coast from Sydney along with some suburban running, I got an indicated 11.3L/100km. I thought that was alright given I liked hearing the exhaust pop on the upshift and I wasn't messing about in the corners. I'd go so far as to say you could get quite close to the official figure if you were paying attention.

The impressive trick that BMW continually pulls off with its SUVs is giving them the same sensual, muscular steering as its sedans, and an impressively similar ride and handling balance.

The steering is the highlight here, but it's also noticeable how planted to the road it feels.

The X4 speaks to its looks, in fact, by feeling sportier and more alive to drive than you'd expect an X3 to be.  

This is less an SUV for soccer mums and dads, and more a bastard love-child that’s into loud leather and bright neon - a CEO who dressed punk rock-lite on weekends, if you will. 

If those weekends are bereft of child taxiing and loading up the boot with several tons of kid stuff, then you’ll have a blast in the X4. 

Unusually for an AMG, the engine does not completely dominate the GLA 35 experience. That's clearly by design - this car is meant for the everyday. While it is hugely powerful for this kind of car, it's a friendly engine that's ready to punch you in the kidneys when you want it, but bumbles around happily when you're in Comfort mode. Which is a pretty good mode.

Moving to Sport amps up the engine but not the suspension, at least not too much. It's at this point you suspect that the 20-inch wheels may not be the right choice for the GLA 35 as the suspension starts to fidget on anything but the smoothest of surfaces. Moving on to Sport+ and unless you're really getting stuck in, it's fidgety and thumpy. One neat trick is that you can avoid all that with the I (individual) setting. Like the C 63, there's a dial for the drive select. But to make life easier for you, you can set up the I setting to your liking, meaning you can keep the suspension in Comfort or Sport mode while turning everything else up to Sport+.

The big sticky Continental tyres are terrific but they're surprisingly noisy. That's kind of the price of entry for a sporty German car, but you do have to raise your voice over the rumble on most surfaces over about 60km/h. The flipside is that you've got a ton of grip, wet or dry in the GLA 35. The throttle reacts quickly to your inputs with the power coming on quickly, the gearbox shifting smoothly (or firmly, if you ask it to). The paddles are very useful and when you're braking into a corner, you can hold the paddle and it will find the lowest practical gear. Nifty.

The brakes are four-piston calipers up front gripping huge 350mm brakes, the rears are single piston but still big discs at 320mm.

Steering is typically AMG, with a strong turn-in to corners and with enough feel to let you know what's happening under the tyres. It's never too chatty, so it's not a tiring car.

On the highway it does settle somewhat and the tyre noise calms down. The suspension keeps you comfortable in comfort mode and the engine is barely noticeable.

The GLA 35 comes loaded up with eight airbags, ABS, stability and traction controls, blind spot monitoring, forward AEB (low and high speed), forward collision warning, reversing camera, auto high beam, lane keep assist, road sign recognition and reverse cross-traffic alert.

You can add front cross traffic alert and active cruise with the $1990 Driving Assistance Package.

You also get two ISOFIX and three top-tether points across the back seat for child and baby seats.

The current GLA has not yet been EuroNCAP or ANCAP tested but I would be staggered if it didn't breeze through with a five star rating.

Despite all the brouhaha about other car manufacturers offering more generous warranty periods - seven years for Kia, for example - BMW has not shifted its stance, still offering its standard three-year unlimited-kilometre warranty. Frankly, it's just not good enough.

BMW also offer a Service Inclusive package for $2010 that covers owners for five years, or 80,000km.

Mercedes has upped the ante on its German rivals by offering a five year/unlimited kilometre warranty.

Service intervals are an impressive 12 months/25,000km. Under the capped-price servicing regime that runs for three years, you'll pay $2650 or an average of $883 per service. The third service is the killer, at $1250.

If you pre-pay your servicing, you can save $500 with a three-year plan for $2150. A five year plan is $3500.