BMW 530E vs Mercedes-Benz GLS450

What's the difference?

The G30 5 Series is an excellent car and unless you're looking for the serious punch of the V8 M550i, or want to run with the cops in the diesel, the 530e is a great option. No slower than the 530i, well-equipped and that rarest of things, a truly elegant BMW. Nobody buys a BMW with an eye on the budget, so at this level, the $3000 gap is nothing to worry too much about. For EV-sceptics, the range anxious or just for someone who just can't take the full EV plunge now, a PHEV is a great bridge between the two worlds.

And if nothing else, it's not a giant SUV.

The new GLS is everything you’d expect of a Mercedes-Benz with an S in its name. Luxury, performance, space, and in this case, thoughtful practicality. A super-capable, super-sized family truckster with the lot.

The G30 5 Series dates back to a time when people thought the grille on this was A Bit Much. How wrong they were. The 5, like the 3, used to be part of a clutch of executive sedans that formed the backbone of the company's expansion and success from the 1980s onwards. That means the styling is never too adventurous and even Chris Bangle's E60 5 Series, while striking, was not particularly controversial.

The only problem with the G30 is that it's hard to distinguish from its predecessor, but that's not a real issue when you see how elegant this car is. Easy on the chrome, proportional grille, big wheels, it's a proper smooth operator, visually speaking.

The cabin is holding up nicely and fits with the rest of the BMW range. It's impeccably well built, full of nice materials and even the wood trim is all right. The black Nappa leather is quite lovely but I can't tell you what the standard stuff is like, so you'll have to work that one out for yourself. It's very calm in here, with a good balance of buttons and screens with which to operate the car and while it doesn't have the you-beaut wow of its E Class rival, with its two massive slabs of screen in front of you, it has plenty to offer.

Launched globally in mid-2019, Merc describes the GLS as the S-Class of SUVs, which is apt given its 5.2m length, 2.5-tonne mass, and ultra-premium specification.

As mentioned, the GLS is big; a step up from the already substantial model it replaces. Built with the US market in mind, in fact it’s produced in Tuscaloosa, Alabama, it’s more than five metres long, close to two metres wide, and over 1.8m tall. And there’s more than three metres between the axles, a 60mm wheelbase increase over the previous model.

And despite the size of the canvas, the Benz design team has managed to make the GLS look like a modern Merc. Signature elements include obvious ones like the slatted grille with a couple of three-pointed stars on the nose.

But there’s also, the carefully chiselled twin ‘power dome’ bonnet, scowling LED headlights and vents to aid front brake cooling and smooth aero performance around the front of the car.

The big beast’s off-road intent is highlighted by extensions around the wheelarches, with big optional 22-inch rims sitting underneath. The fact they look right-sized for the car speaks volumes about its scale.

The racy AMG Line package is standard, and a recess and pronounced character line, tightening the lower waistline is a familiar Merc treatment, plus alloy roof rails toughen the look while dialling up practicality.

The rear is relatively simple, borderline generic, with tapered tail-lights offering the only strong whiff of design personality. But believe it or not, thanks to careful detail sculpting of the body, and smoothing underneath the car it boasts a drag figure of Cd 0.32. Outstanding aero performance for a large SUV.

The driver and front passenger are presented with a sweeping dashboard dominated by twin 12.3-inch digital screens, one primarily covering the instruments, and the central screen managing the MBUX media system, including audio, nav, phone integration, car set-up, and more, plus ‘Hey Mercedes’ voice control.

The overall feel is simple, and restrained, yet massively confident, with a subtle colour palette, large squared-off elements defined by brushed metal finishes, and an obvious, intense attention to detail, from the haptic controls to the beautifully finished, multi-function steering wheel.

And the standard Burmester audio system includes a two-way in-car communication function that subtly amplifies the driver and front passenger’s voices for those in the third row, and vice versa. Sheer genius.

The 5 is almost five metres long, so as you might expect, it's big inside. Back-seat passengers have a ton of space to play with and even three across back there is doable for a distance. The outboard seats have some nice shapes to them, too, so they hold rear passengers in if the driver gets a bit ambitious. Loads of legroom, good headroom and very importantly, a good view out through the big side windows. Properly comfortable, then.

Front and rear passengers each score a pair of cupholders for a total of four as well as the same number of bottle holders. The centre-console bin is long and shallow, but does feature a USB-C port. The wireless-charging pad also has a USB-A port for those without the functionality and/or a phone too big to fit. Both the cupholders and charging pad have a sliding cover.

The boot is smaller than the standard car's as there is a lithium-ion battery hidden underneath the now-sloping floor. With 410 litres, it's smaller than a 3 Series' but it doesn't look that small. There is also a spot for the charging cable and its bag behind the left wheel arch.

Space is obviously a critical factor here, and no surprise there’s copious amounts of it inside the GLS.

Front seat passengers enjoy plenty of breathing room, without feeling remote from one another, and there’s lots of storage in the shape of a large lidded box/armrest between the seats, a decent glove box, two big cupholders and jumbo door pockets with room for large bottles.

There’s one data-enabled USB port in the front, two charge-ports in the second row, and four in the third row. Shouldn’t be any complaints about powering mobiles, tablets or games.

The second row feels every millimetre the SUV limo. Simply getting in and out is made easier because an auto lowering function drops the car 25mm when one of the doors is opened.

I was able to sit behind the driver’s seat set for my 183cm position with heaps of head and legroom on offer. And there’s an extra 10cm of electrically adjustable travel to play with if those in the third row agree.

The fold-down centre armrest features a lidded storage tray and twin pop-out cupholders. There are netted pockets on the front seatbacks, and again, the door bins are big enough for large drink bottles.

Three adults across the rear is a breeze, there’s climate control ventilation, and a huge glass sunroof is standard. Rather than asking ‘Are we there yet?’ the kids will be disappointed when you arrive!

Then there’s what the Cleary family refers to as ‘the way back seat.’ A pair of third row seats for the lucky kids that get to inhabit their own little world. Getting in and out is relatively civilised thanks to electric slide and tilt for the second row seats, and space is generous. I could sit comfortably, so the kids will be all smiles.

With all seats upright cargo capacity is enough for a seven-person day trip (355L VDA). Press the button to fold the 50/50 split-fold third row down and your options expand substantially (890L). And with 40/20/40 split-folding second row lowered, transportation of a full, three-ring circus is on the cards (2400L). Overall, more space than the arch enemy BMW X7.

Plus, the ability to lower the car 50mm thanks to the standard air suspension makes life even easier. And one button lowers the second and third rows at the same time.

The spare is a collapsible space-saver, and towing capacity for a braked trailer is 3500kg, with a tow ball weight of up to 140kg. The ESP system also features a trailer stabilisation function that counters oscillation with “braking intervention.”

The GLS launches in Australia with two models, the turbo-petrol GLS 450 4Matic at $146,500, before on-road costs, and the turbo-diesel GLS 400 d 4Matic at $153,300.

Specification is identical across the two variants, and when you’re competing against the likes of the Lexus LX570, Audi Q7 and BMW X7, as you might expect the list of standard features is lengthy.

Aside from the comprehensive suite of safety tech, covered in the Safety section below, the GLS equipment list includes, 21-inch alloy rims, adaptive high beam assist, air suspension, alloy roof rails, AMG body kit, a huge panoramic sliding glass sunroof, privacy glass from the B-pillar back, auto tailgate, keyless entry and start, rain-sensing wipers, cruise control, LED headlights, and power closing doors.

The power closing doors are a big plus for parents not wanting to disturb kids nodding off in the car, with the soft-touch function drawing the door in for the last few millimetres to an almost silent close.

Inside there’s ambient lighting (64 colours), strategically placed open pore oak wood trim, 13-speaker/590-watt Burmester surround sound audio, electric folding second and third row seats, a head-up display, ‘Mercedes-Benz’ branded illuminated sills, leather seat upholstery (‘Artico’ faux leather on the dash and doors), multi-adjustable electric seats in the front and second row (memory in the front), electrically adjustable steering column, leather-trimmed multi-function steering wheel, and five-zone climate control.

The multi-media system is spectacular, incorporating the twin 12.3-inch digital screens, the central media unit managing nav, digital radio, mobile device connectivity, Apple CarPlay and Android Auto, plus vehicle tracking. There are also remote vehicle status functions (door locking, valet parking, etc), global search (Amazon Alexa, Google Home, Yelp, and Trip Advisor), and a wireless device charging pad.

The basket of goodies can hold its head high in this part of the market, so the value equation stacks up well.

The 530e comes with a 2.0-litre four-cylinder turbocharged engine developing 135kW and 290Nm, with the eight-speed ZF automatic sending power to the rear wheels. The electric motor spins up 83kW and 230Nm, also driving the rear wheels. When everything is working together, the combined output is 185kW and 420Nm, which delivers a quick 6.1-second dash to 100km/h, which isn't mucking about.

You can choose four drive modes. EV will (mostly) drain the battery, Hybrid will keep the two working together and Sport will deliver the most power. And drain the battery, albeit more slowly. Adaptive works the averages and decides what you need or want by how frisky you're being with your driving style.

There are two engines on offer. The 3.0-litre (M256) in-line six-cylinder turbo-petrol GLS 450 4Matic, and the 2.9-litre (OM656) in-line six-cylinder turbo-diesel GLS 400 d 4Matic.

The all-alloy, twin-scroll single-turbo petrol engine delivers peak power of 270kW from 5500-6100rpm, and maximum torque of 500Nm across a broad plateau from 1600-4500rpm. It also features a 48-volt electrical system driving the ‘EQ Boost’ set-up, able to deliver an extra 16kW/250Nm for short periods. The integrated starter-generator also enables energy recuperation.

Although the all-alloy, twin-turbo diesel features variable valve lift it gives some ground on power, offering up 243kW between 3600-4000rpm, but torque is a solid whack, with 700Nm on tap from 1200-3000rpm. Worth noting, that to minimise emissions this engine features a “selective catalytic reduction converter” in the exhaust, which brings with it the use of an ‘AdBlue’ reducing agent. The separate AdBlue tank has a capacity of 31.6 litres.

The nine-speed auto transmission is the same in both versions, although the diesel has a slightly lower final drive ratio.

The 12kWh battery takes up the same amount of space as the old one, but has more capacity, extending its EV range. The claimed EV range is 57km on the WLTP standard. 

The iDrive system has a bunch of settings that you can play with to squeeze more out of the silent-running mode and there's also a battery-charging mode button to force the ICE to charge the battery while you're on the move. Also useful is a timing system, so you can schedule when the car charges to take advantage of the cheap power available in the dead of night.

Recharging is easy but sadly a bit slow off a domestic power point. Having said that, if you plug it in after a day's commuting, you'll be topped up to 100 percent overnight. It's a long charge, but it's not as if you'll be stranded if you forget. You can get a wallbox, but there's not much point.

The fuel tank is just 46 litres. The WLTP combined cycle figure is a laughable 2.3L/100km. On that official figure, you'll cover an unlikely 2000km. My week with the car, which included 70km on EV-only power with one charge off my solar panels, got me an indicated 6.1L/100km in a mostly suburban week of driving. So based off that, you'll get about 530km from one full charge and a full tank, which is a bit confusing. Keep charging and, if you're an average Australian who travels little more than 30km per day, you won't use much petrol at all.

Having said all of that, out on the freeway, you'll probably slide towards that 2.3L/100km and make it from Sydney and Melbourne on a single tank. Just.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle for the GLS 450 is 9.2L/100km, the more frugal GLS 400 d trimming that to 7.7L/100km. The petrol 450 emits 210g/km of CO2 in the process, the diesel 400d dropping that slightly to 202g/km.

Stop-start is standard, you’re looking at premium unleaded for the 450 GLS, and you’ll need 90 litres of dinosaur juice to full the tank on both models.

The reason I like PHEVs as a tool for pushing people towards electrification is about more than the fact that it will likely cure buyers of range anxiety once they're realistic about their actual car usage. I mean it does do that, but it's more about the fact that PHEVs drive like a normal car, with few exceptions.

In EV mode, the acceleration is swift but not that brutal, YouTuber-friendly thrust EV fanboys use as proof that legacy car makers are dead. It's all very serene and very, very quiet as you move from traffic light to traffic light in near silence, while more than keeping up with traffic. The blue of the dashboard indicates your progress and the iDrive screen can keep you updated with power consumption.

The switch between EV and ICE propulsion is very smooth and it's almost like BMW has been doing this forever. You'll also discover an appreciable lift in performance, more in line with the M Sport badges. BMW's engineers have done nothing to make the 2.0-litre petrol sound better than a whirring mixmaster, though.

Slightly less M Sport-ey is the suspension. While there's absolutely nothing wrong with it, the adaptive dampers never dial things up too much for the average motorist. Granted the 5 will leave just about anything this size for dead as far as driver involvement goes, but it certainly keeps the dial closer to comfort than, say, the M550i does. Once again, it's a serene thing to get around in and passengers will love the quietness and easy flow of conversation. Or the lovely sound from the harmon kardon speakers.

You don't have to try too hard to cover a good chunk of the claimed 57km of EV range. Realistically you'll get close to 45km, even after my colleague Matt Campbell drained 20km of charge in a six-kilometre trip that he maintains was driven gently (snigger) and normally (guffaw). Without trying too hard, I managed 41km in pure EV after his attempts to ruin my numbers (not really, but I do enjoy the amusing false narrative).

Merc claims the GLS 450 will sprint from 0-100km/h in 6.2sec, and the 400 d in 6.3sec. Not hanging around for a 2.5 tonne mothership. But the standout is the 400 d’s torque. All 700Nm of it available from just 1200rpm to 3000rpm; right in the mid-range sweet spot.

The nine-speed auto transmission is smooth yet responsive, with paddles on the wheel for manual shifts when you want to pick the ratio. The combination of effortless grunt and the nine-speeder keeping things on the boil is an impressive one.

Suspension is by double wishbones at the front and multi-links at the rear, and while you can feel the weight in cornering, the standard Airmatic air suspension (which does away with steel springs) is superb in terms of ride comfort and body control.

We took a deep breath and pushed enthusiastically through a series of sweeping corners and the fat (285/45 fr - 325/40 rr) Continental ‘PremiumContact 6’ rubber wrapped around our car’s (optional) 22-inch rims gripped hard.

The ‘4Matic’ all-wheel drive system also seamlessly shuffles torque between the front and rear axles (theoretically up to 100 per cent in each direction).

Merc has put extra focus on body rigidity, the tuning of engine and suspension mounts, and sound absorption, and it shows. The GLS 400 d is beautifully refined on the highway. A neat touch is the car automatically lowering 15mm at motorway speeds or when ‘Sport’ mode is selected.

Steering is electromechanically assisted, and Merc says the front suspension geometry has been revised to minimise vibration through the wheel. And yes, feedback is minimal, but unfortunately so is road feel with only a general connection between your hands on the wheel and the front tyres on the bitumen.

When you’re steering a large beast like this, often with something substantial hitched to the back, you want to know braking performance is up to the task, and the GLS’s big ventilated discs all around deliver reassuringly strong stopping power, with nice, progressive pedal feel to boot.

The seats are adjustable six ways to Sunday, but beyond that they’re comfortable and supportive, even over long stints behind the wheel.

We stayed on the bitumen, because, let’s face it, that’s where this car will spend 99.9 per cent of its time, with the exceptions of the boat ramp, a ski weekend or pony club.

For those special occasions the optional ‘Off-road engineering package’ adds a low-range transfer case, inter-axle locking, hill descent control, and under body armour for more serious work.

At the time of this launch drive the GLS hadn’t been safety assessed by ANCAP, but you could make a small wager, like every penny you have to your name, that it will score a maximum five stars.

The expected active features are there, including ABS, ASR, and ESP, with additional tech including ‘Active Blind-Spot Assist’, ‘Active Brake Assist' (Merc-speak for AEB), active lane keeping and lane change assist, ‘Adaptive Brake’, ‘Attention Assist’, ‘Evasive Steering Assist’, ‘Parktronic’ (active parking assist with 360-degre camera), rear cross-traffic alert, traffic sign assist, and a tyre pressure warning system.

Then, if all that isn’t enough to avoid an impact the GLS is equipped with nine airbags (front and pelvis side for driver and front passenger, side for outer rear seat occupants, full-length curtain, and a driver’s knee bag), an active bonnet to minimise pedestrian injuries, and the ‘Pre-Safe Plus’ (flashes rear hazards to warn drivers closing too quickly from behind, tightening the belts at the same time, and locking the brakes if the GLS is stationary with a rear impact imminent).

BMW really needs to up its game, as do Audi and Porsche (among others). Munich is still sticking with a three-year/unlimited-kilometre warranty while German rival Mercedes is up at five years and Japanese competitor Lexus four. You do get three years roadside assist thrown in.

All 5 Series (excluding M5) are eligible for service plans. For $1950, you're covered for five years/80,000km of servicing. As with most BMWs, servicing is based on how you drive but really, if we're being honest, the car will get you into the dealer once every 12 months or 15,000km. Roughly.

The Mercedes-Benz range is covered by a three year/unlimited km warranty, which, like Audi and BMW continues to lag behind the mainstream market where the majority of players are now at five years/unlimited km, with some at seven years.

On the upside, Mercedes-Benz ‘Road Care’ roadside assistance is included in the deal for three years.

Service is scheduled for 12 months/25,000km (whichever comes first) with pricing available on an 'Up-front' or 'Pay-as-you-go' basis.

As a guide, service pricing for the outgoing GLS is set at $2600 per service (up-front) and $3250 (PAYG), a saving of $650 a pop. Fourth and fifth services are also available for pre-purchase ($3550 and $4900).