BMW 520i vs Mercedes-Benz GLA250

What's the difference?

There’s no getting around the i5 being a rather expensive offering. More than $150,000 to get into an electric sedan that’s not much faster than a hot hatch is a big ask, but there’s plenty to enjoy about the 5 Series.

Things like its heated leather seats shouldn’t be the reason you’re willing to spend so much on a sedan when a $50,000 hybrid SUV will score you the same, instead it’s the fact the 5 Series is a delight to drive and hasn’t lost the feeling of prestige the badge has earned over the last half a century.

In terms of value - if speed isn’t your focus and you’re less of a gadget-type-operator when looking at cars like this - the 520i has the style and comfort you’d need and at $100K less than the M60.

And in terms of large electric sedans, the i5 eDrive40 is cheaper than a Porsche Taycan (by a little) or an Audi e-Tron (by a lot). The Genesis G80 Electrified is the closest cheaper rival, by about $10K, or the less powerful Mercedes EQE is similarly priced at $154,900.

Essentially, if you’re looking at a 5 Series, it might be worth considering if you really need it to be electric, but if so, there aren’t many alternatives in its category for the price.

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

My wonderful wife, who is not really into this kind of car, admitted to me in a quiet voice that she really liked the GLA45 as long as it was in Sport + mode. And I have to agree. While I'm very fond of the ridiculous Audi RSQ3 (that turbo five-cylinder sounds amazing), I think I'd stump up the extra for the GLA.

Importantly, it can be comfortable, it can be quiet and it's a better fit for most humans than the A or CLA. It is getting on a bit and could do with a further clean-out of the poor ergonomics, but in what is likely its final year on sale, it's still a belter.

If you’ve watched other members of the BMW family go into a new generation within the last few years - the 3, 4 and 7 Series particularly, you won’t be too surprised by what you see here. Especially with the latter, having seen the petrol variants look roughly the same as the electric ones.

BMW specifically made the petrol 520i and the i5 variants look similar for egalitarian purposes - to not disenfranchise 520i buyers who are still spending a fair chunk of cash but might not be ready to go EV.

That means all three variants score a mix of new and old. The kidney grille remains and isn’t as large as on the M3 or 4 Series, while the bonnet line following it and the ‘character line’ down the car’s side also remain. And yes, the Hoffmeister kink where the C-pillar meets the passenger window’s lower corner is still there.

On that C-pillar though is a ‘5’ stamped into the bodywork, new to this generation, while the front grille as mentioned has a glowing light surround - the brand’s ‘Iconic Glow’ already seen on the 7 Series.

Overall, thanks to being slightly larger in every dimension, the new 5 is starting to look bigger than a 7 Series from a little while ago. And that’s because it is - its body is overall longer than an E65 7 Series from the mid-2000s.

It’s 5060mm long 1900mm wide, 1515mm tall (97mm longer, 32mm wider, and 36mm taller). Its wheelbase is 20mm longer too at 2995mm. 

The GLA45 isn't a looker, but then, none of the GLAs are. There's a certain blobbiness to it. A bit of Teletubby mixed with...um, another Teletubby. It's not ugly, it's just not particularly attractive. The 20-inch wheels do much to lift the appearance and negate the effect of the raised ride height compared to the A45/CLA45.

The body kit stops just short of lairy, which is heartening. So if you want to stand out, venture out into the aftermarket world.

Inside was a mild surprise. The last time I drove a CLA 45 I used the word "gaudy". While the GLA isn't amazingly better, the texture of the Alcantara replacing the brushed metal-look plastic, or the carbon of the option pack, was much more pleasant. The brightwork in the cabin is still a bit odd looking, and it's still overcooked with its red detailing, but it is an otherwise beautifully built and well-detailed interior.

A longer wheelbase means more space inside, where the 5 Series also still looks fairly familiar to those who have spent any significant time in a recent model BMW.

BMW has historically been pretty bang-on with ergonomics, and the new-gen 5 does a good job of sticking to that. Comfortable sports seats and quality feel for the materials on touch points mean the 5 Series feels nice to be in, and relatively restrained interior design for a somewhat luxurious car means it looks nice too.

It’s let down only by a couple of things - its multimedia screen and Operating System 8.5 is a little less simple to use now, and requires more touching the screen than previous iDrive systems, rendering the scroll wheel less useful.

The BMW Interaction Bar too is a little tricky to see controls on, as well as lacking physical feedback for using controls. Vent flow controls are digital sliders on the Bar, while vent direction is controlled by an unusual ‘joystick’ style control nearby.

The rear seat is plenty spacious, as you’d expect from a large sedan, with climate controls and ports for charging devices in the rear.

The front seats are utterly brilliant and feel as good as they look. On first acquaintance they may feel under-padded, but once you've adjusted them to your liking, you never want to leave. The AMG cars also feature one vast improvement over a normal GLA - the ergonomic disaster of a column-mounted shifter is removed, with a console-mounted shifter added where a small cubby once lived. It's so much better, although the Park button is oddly difficult to press.

When luxuriating in those snug front seats, you'll have access to two cupholders and door-mounted bottle holders, as well as a console bin (where the USB ports are) and a tray under the climate controls. Rear seat passengers will find legroom tight but headroom good, even with the huge sunroof.

The GLA's boot holds an entirely reasonable 421 litres, rising to 1235 when you drop both rear seats.

The GLA 45 lightens your wallet by no less than $89,211 - more than double the GLA 180 front-wheel drive, and about $5000 more than the bonkers (and ancient) RS Q3.

Packed into the GLA's kit bag are 20-inch alloy wheels, a 12-speaker stereo, dual-zone climate control, comprehensive safety gear, reversing camera, keyless entry and start, front and rear parking sensors, electric and heated front seats, sat nav, auto LED headlights, auto wipers, leather trim (some real, some not), auto parking, powered and heated folding mirrors, a massive sunroof and dynamic dampers. There's no spare tyre, just a tyre-repair kit.

The multimedia system is Mercedes' COMAND unit and it is as user-unfriendly as ever. It does, however, power a very decent stereo, and also offers Apple CarPlay and Android Auto.

Thankfully our car was bereft of both the carbon-fibre package ($990) and the aerodynamics package ($1990).

Despite BMW calling it ‘electrified’, the base 520i is only a mild hybrid so most wouldn’t realise unless they were told.

Its turbocharged 2.0-litre four cylinder puts out a modest 153kW and 330Nm, with power and torque sent to the rear wheels via an eight-speed automatic transmission.

BMW claims it’ll knock over the 0-100km/h sprint in 7.5 seconds, a few seconds too slow to blow anyone’s socks off.

The mid-spec eDrive40 has a little more kick to it, its rear-mounted electric motor capable of 250kW/430Nm and able to cut that time to 6.0 seconds.

It’s fitted with an 84kWh battery to draw its power from, the same as the 442kW/820Nm M60 with its all-wheel drive dual-motor setup.

The M-tuned i5 can hit 100km/h in a claimed 3.8 seconds. Bye bye socks, perhaps.

AMG's fabled 2.0-litre turbo four lurks under that higher bonnet, still kicking out an improbable 280kW and 475Nm. Drive reaches the road via Merc's own seven-speed twin-clutch transmission and all four of its wheels.

All that power and grip translates to a 4.4-second dash to 100km/h for the slightly tubby (over 1600kg) GLA, but just between you and me, anything under five seconds feels scorchingly quick.

BMW claims the petrol 520i sips 6.7 litres per 100km from its 60-litre fuel tank, though we were unable to independently test any of the claimed figures on the launch day.

The base car has a theoretical range of 896km if it was possible to achieve the claimed fuel consumption figure for the duration of the whole tank - but it isn’t and realistically you could knock about 20-30 per cent off that, depending on how enthusiastically you drive.

In the i5 variants, the same 84kWh battery provides slightly different ranges due to the eDrive40 using 16.56kWh per 100km, and the M60 using 18kWh.

The eDrive40 has a claimed 550km maximum range, while the M60 has a 506km figure thanks to its extra motor and weight.

The official combined-cycle figure suggests the GLA45 will consume 7.5L/100km. Obviously that figure is largely irrelevant, and not just for the usual reasons, but because you don't buy a GLA45 to potter about in. I got, uh, 12.5L/100km, so you can imagine how much I was enjoying it.

As you might expect, you'll need to feed it 98RON.

For some cars, the list of features is what really separates the variants, but that’s not the case for the 5 Series. As is a bit of a BMW tradition, the drivetrains dictate the different trim levels and prices, and there are three fairly distinct flavours of 5 Series.

Starting at ground level, the 520i might at first seem like a bit of boring vanilla. Except it’s actually quite smooth and light vanilla.

There’s not a lot to write about when it comes to its drivetrain, but the lightness of its engine and petrol tank combo when compared to EV batteries and motors is refreshing, and makes for a quite dynamic rear-drive sedan.

Its 153kW and 330Nm is delivered smoothly enough with the mild hybrid assistance doing a little in helping responsiveness, but without intervening in the gearshifts it doesn’t feel particularly keen.

It lacks the ride comfort of the i5’s adaptive suspension, but it’s able to be driven in a spirited manner that belies its size and even, to some extent its 1725kg kerb weight. Chocolate sprinkles on the vanilla, if you like.

It’s not fast, but it feels nimble compared to its electric siblings and can carry a fair bit more speed through corners, after which there’s room to notice its rear-drive characteristics.

It’s especially noticeable after getting out of the 2130kg eDrive40, though the extra power from its 250kW/430Nm motor makes for some more spirited acceleration and a little more excitement when exiting a corner, especially if you’re aiming to double-check if it really is rear-wheel drive. There’s a little more than choc-topped vanilla going on here.

The steering is, like in the 520i, direct and responsive, though in most cases is probably best set to ‘comfort’ rather than ‘sport’ in its settings. 

The eDrive40 is rather comfortable and capable when barrelling through twisty backroads, and doesn’t feel out of hand for a five-metre-long sedan. It holds its weight well, and telegraphs when you might be approaching the limit quite sensibly.

When considering that, then, it’s impressive how brutally capable the 2305kg M60 is.

Here, we’re looking at a double-choc fudge with extra choc, and maybe some cookie dough in there for good measure. There’s a lot to like, but boy is it heavy.

It’s 580kg (or exactly half a Peugeot 208 GTi) heavier than the 520i, but it feels quick on its feet and its anti-roll seems to do a lot in terms of dynamics, the limiting factor really seems to be its tyres (which can and will squeal quite quickly to let you know when approaching said limit).

While you’ll need to take caution with how much speed you approach a corner with, you’re not going to lack acceleration on the other side, its all-wheel drive being less ‘fun’ but more efficient at getting you away from the bend than in the rear-drive eDrive40.

That adaptive suspension does also translate to a comfortable ride on relatively rough roads - only particularly bad bumps will reveal how much weight and pressure is being placed on each corner of the big sedan.

When the 45-badged cars first launched, they were something of a revelation. BMW's turbo six-cylinder fans sniffed at the 2.0-litre's staggering outputs and all-wheel-drive chassis, but this car really captured the imagination. The GLA45 might be slightly unexpected, but it's better in almost every way as a daily driver than the A or CLA.

For a start, its higher ride height seems to translate to a much better ride quality. Anything on 20-inch wheels should have an appalling ride, but the GLA45 manages to be firm yet comfortable. Put the other two in Race mode and you'll need to up your private health insurance extras to include osteo, physio and whatever "o"-ending specialist fixes your back.

The improved ride quality meant I was far happier to chuck this car around. While it doesn't have the same ultimate overall performance of the lower cars, it's far more comfortable whether you're on it or just driving around. The front seats are supportive and comfortable, and the steering is excellent.

As for the engine...well, it still farts like toddler during a moment of silence at a funeral, but you can't deny its technical brilliance and huge power outputs. I remember the CLA45's engine as being a bit highly strung. Perhaps I couldn't separate the overall high-strung nature of the car from the engine, but I felt the same engine in this car wasn't as jumpy.

The way it propels this car into triple figures is tremendous fun. It's not as charismatic as the Audi five-cylinder, perhaps, but that doesn't matter in the end - it's properly fast, attached to a better chassis and offers a cabin with a driving position fit for humans.

The GLA comes with nine airbags (including driver's knee), blind-spot sensors, lane-departure warning, lane-keep assist, forward-collision warning and mitigation and driver-attention detection.

The GLA does not have its own ANCAP rating, but the A-Class on which it is so heavily-based scored five stars in 2013.

BMW has a fairly industry-standard five-year/unlimited kilometre warranty on its new cars, while its electric car batteries are covered by an eight year/160,000km warranty.

For servicing, BMW offers numerous discounted packs and deals based on your preferences and desire to pay upfront.

For the 5 Series, a five-year/80,000km basic service package is $2400, though the i5 will have different needs and lower servicing costs not yet listed by the brand.

The Mercedes standard warranty is three years/unlimited kilometres with roadside assist to match. Service intervals are a very reasonable 12 months/20,000km.

The company also offers capped-price servicing - first service is $576 but the second and third are a whopping $1152 each. Three years will set you back $2880.