BMW M5 vs Mercedes-AMG GLE53

What's the difference?

Let’s get one thing out of the way: the new M5 is a very good car. Considering the emissions limitations and size increase of its base model, it is an impressive bit of engineering. 

What’s trickier is deciding whether the new car is really better to drive. Less edgy but supremely comfortable and quiet; BMW leaned into the daily usability of the plug-in hybrid M5 rather than amping the petrol-electric system for maximum thrills. And do you know what? That’s fine with me. 

The new M5 still performs on road and track and does an incredible job of hiding its weight (most of the time). Perhaps the G90 is a little more Audi RS6 than F90 in its demeanour but some would argue that’s no bad thing. 

The concept of the BMW M5 is not static, it evolves with the times, and the G90 is no exception. Expect future Competition and CS variants to unlock some extra lunacy. 

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

The GLE Coupe isn't going to click with a traditional enthusiast but will appeal to a new age of mainstream performance buyers. It's a total tech showcase and you can feel all of those 48-volt benefits from behind the wheel.

Love it or hate its shape, then, you have to appreciate how Mercedes has gone to the nth degree on the details on an SUV it probably could have sold on looks alone.

The M5’s raw size is what you notice first. The G90 M5 is a whopping 113mm longer, 67mm wider and 37mm taller than the car it replaces, with the wheelbase stretched 24mm.

It is also the most pumped M5 yet, compared to a 520i it is 70mm chubbier at its flared wheel arches. The ‘M5’ insignia on the C-pillar means you’ll know this is the fast one. 

Presence is not in question, then, but beauty? Not the right word. The G90 makes its predecessors — especially the original ‘E28’ — look demure. 

The cabin layout builds on the concept debuted by the iX electric SUV, with twin integrated screens and focus on technology and minimal buttons. Materials are mostly high quality and feel fitting for the M5’s asking price.

Hate the very concept of a large SUV coupe or not, you have to at least agree this second-generation GLE Coupe looks infinitely better than the model preceding it.

This time the Coupe version was front of mind from the outset of the GLEs development and is significantly different from the wagon version in more ways than just a sloping roofline.

The wheelbase has been cropped in 60mm compared to the wagon, and the GLE Coupe is a full 7.0mm wider and 39mm longer than its predecessor.

All this adds up to an imposing and more resolved SUV Coupe. I especially like the way its bootlid flicks up into a spoiler, and how the tail-lights round out the profile nicely.

Still, there's always going to be something a little off about the proportions when it comes to a coupe SUV this big, and it's certainly a re-imagining of what a sporty vehicle should look like.

This car's cabin is almost as confronting as its exterior. Up front you're met with an assault of chrome, a ventilation overload and a totally dominant expanse of screens.

This all hints at the advanced tech which lies beneath, but the real wood and leather trims also elevate the cabin to something you might expect at the tall asking price.

It may appeal to a particular taste and makes the BMW X6's cabin look almost conventional.

BMW has persevered with its twin-screen, minimal-button approach for its 'Operating System 8.5' in the M5. 

The 14.9-inch central touchscreen is bright, responsive and high resolution but the software remains a little strange. The main interface is classy but when looking for settings to adjust you’re presented with a Windows 95-esque panel of small square touch targets. It’s not intuitive. 

Wirelessly mirroring Apple CarPlay or Android Auto works a treat, at least. Digital climate controls keep temp adjustment persistently on screen and a shortcut to fan speed. The nipple-like vent direction adjustment grows on you, as do the digital vent sliders. 

The 12.3-inch digital driver’s display still doesn’t have the freedom of customisation and clarity of Audi’s interface. 

The M5 has two cupholders, a deep central storage cubby, door bins that swallow two 600mL plastic bottles and twin wireless charging pad that resolutely grips smartphones even under the sort of tummy-churning G-Forces this M5 can manage. 

Setting the M5 apart from the regular sedan is a unique centre console bunching 'M Drive' modes, 'M Hybrid' modes and other shortcut functions together next to the gear toggle and M-engraved crystal 'iDrive' controller.

Comfortable front seats are power adjustable with in/out, up/down lumbar support and have two memory positions. 

The 5096mm long M5’s back seat is very spacious. Headroom is good for those beyond 182cm (six-foot), the bench is extremely supportive, while leg and toe room are adequate.

A fold-down centre armrest has two cupholders and there are USB-C charge ports in the back of each bucket seat for a total of four. 

You can buy an accessory mount that holds tablets or smartphones for rear seat passenger entertainment, too.

When you look in the boot, BMW offering a Touring version of the latest M5 makes even more sense. The load aperture is big but the usable space is narrow; the sides intrude on load space. 

The 466-litre space will make fitting suitcases for an airport run tricky and, even with the 40/60 split-fold rear bench, you will struggle to fit a bike in the back. There’s no spare tyre, either.

In some ways, the GLE Coupe makes the most of its extra dimensions, but in other more obvious ways, it's quite compromised.

Benz tells us there's now 40 litres of combined cabin storage, and with the large door bins, centre console box, convertible cupholders, and glove box, I'm inclined to believe them.

The brand also told us much of the extra 39mm of body length has gone into the rear passenger space, and this seems true when it comes to legroom.

You definitely notice the decline of the C-Pillar, though, making an otherwise large space feel slightly claustrophobic, particularly with the 53's dark headlining and heavily tinted rear windows.

The almost absurd ride height does make peering over the bonnet a chore at times, although I enjoyed the adjustability and comfort afforded by the front two seats.

In terms of connectivity, front passengers get a plethora of USB-C jacks, a wireless charging bay, and a 12V power outlet. There's no USB-A connectivity, so you'll want to stock up on converters.

Rear passengers benefit from dual USB-C ports in a fold out tray, and also score dual adjustable air vents. Two extra climate control zones can be optioned for rear passengers ($1450), and there's also an exorbitant option package to include two screens and wireless headsets for the full business-class experience in the back seats ('Entertainment Package' - $6000!).

You might be surprised given this SUV's shape, but a lot of thought was also poured into the design of the boot area. Thanks to a large footprint, the GLE 53 Coupe's boot is large at 655 litres, five litres up on its predecessor. It's still a whopping 170-litres down on the wagon version, though.

The boot lip has been lowered significantly to increase ease of use, too.

Our test car did not have a spare wheel, with only an inflator kit or run-flat tyres to be working with. This is despite a large area under the boot floor which, to my eyes at least, could easily have fit a space-saver spare.

Does price matter when it comes to a machine like this? The GLE 53 variant with which this generation of Coupe will launch is the mid-grade car in a three-variant line-up.

It wears a very premium MSRP of $171,800. Soon it will be joined by the only non-AMG badged variant, the GLE 450 Coupe ($137,000) and the top-spec V8 bruiser, the GLE 63 S ($222,700).

To put those numbers (and this car's very existence) in context, it's best to look at its direct competitors.

You'll likely know of its arch rival, the BMW X6. Another Coupe SUV at the pointy end of the price scale, the closest rival variant to our GLE 53 is the M50i starting from $159,900.

Other rivals in this rapidly growing space include the Porsche Cayenne Coupe S at $166,200, and the yet-to-arrive Audi SQ8 which has not yet had its pricing locked in for the Australian market. See what I mean? Coupe SUVs are beyond just an oddity.

So, it's more expensive than its direct rivals, but does it have good reason to be? The GLE 53 is equipment laden from the get-go.

Included are the standard fitments from all new Benz models, including the headline dual 12.3-inch screens adorning its massive dashboard, complete with Apple CarPlay, Android Auto, built-in navigation and voice activation, real leather interior trim with fully electrically adjustable heated and cooled front seats, 21-inch alloys, 'multibeam' LED headlights, AMG styling items, a wireless charging bay, head-up display, and, of course, a panoramic opening sunroof.

An impressive list, but the technology under the skin of the new GLE goes a step beyond. Read about its engine and transmission tech and impressive safety suite later in this review.

Unlike the Mercedes-AMG C63, BMW has kept the M5’s eight-cylinder heart and this has proven to be a good decision. 

The 4.4-litre twin-turbo petrol engine has been optimised with “a cross-bank exhaust manifold and optimised oil separation”, says BMW.

The V8 spins to 7200rpm though it isn't a screamer, outputting a full-bodied 430kW (5600-6500rpm) and 750Nm (1800-5400rpm).

Augmented with a transmission-mounted 145kW electric motor that can produce up to 450Nm, thanks to pre-gearing, maximum combined outputs are 535kW and 1000Nm. 

Weight blunts punch, though, so despite nearly 100kW and 250Nm more, the new M5 is a tenth slower to 100km/h than its predecessor (claimed), at 3.5 seconds for the sprint.

You can thank a 220kW/tonne power-to-weight ratio, worse than the old car's 233kW/tonne figure. The new G90 claws some time back with brute force, hitting 200km/h in just 10.9 seconds and goes on to a limited top speed of 305km/h.

You can choose from five powertrain settings, starting with 'Electric' and 'Hybrid' for everyday use, while 'eControl' lets you store battery power for urban use.

'Dynamic' provides the best balance, says BMW, while 'Dynamic Plus' is like a qualifying mode. Think maximum combined punch for up to 10 minutes, at which point you’ll have drained the battery. 

Driving in pure electric mode, the take-off can be a little jerky but the quietude and decent power make it pleasant. Power sources are combined expertly in Hybrid and giving it some stick in Dynamic is more than enough to make your passengers feel queasy.

Here's where this car gets particularly interesting. It's a hybrid. But not your gran's Prius. It's hybrid in a way which will make you re-think the technology.

Residing under the bonnet is a 3.0-litre, twin-turbo, straight-six engine mated to a very complex looking nine-speed (torque converter) automatic transmission.

One of those two turbochargers is driven by an electric motor rather than the exhaust (in order to provide its peak benefits at the lowest possible rpm), and there's also an electric motor inside the transmission which takes the load off the engine at low speeds and between gears.

This isn't where the 48-volt tech ends, with the GLE 53 also sporting active anti-roll bars and dampers, which significantly adjust the ride and body-roll on-the-fly.

All four wheels are driven via Benz's 4MATIC+ all-wheel drive system.

Electric-only range is rated up to 69km in WLTP testing, but the 18.6kWh battery is more likely to give you around 60km in real-world driving. It can be topped up in about two hours using an 11kW AC charger, or overnight on a three-pin socket. 

BMW includes both Mode 3 (public) and Mode 2 (home) charging cables with the M5. 

The M5 uses 3.2L/100km of 98 RON premium unleaded in ADR testing, corresponding to just 72g/km of CO2, so it should sail through the first rounds of Australian emissions regulations. 

Indulging in what the V8 has to offer sees that consumption spike, though. An enthusiastic road drive saw the M5 gulp 12.4L/100km, according to the trip computer.

It's a performance car, so fuel consumption is probably not going to be front of mind for potential buyers. That said, the hybrid tech delivers a surprisingly good number.

The official combined cycle consumption number is ambitiously under 10L/100km at 9.3L/100km.

After three days of (roughly) combined testing and about 300km of distance travelled, our car was showing a dash-reported 14.1L/100km. Not near the claim, but is it really bad for a performance SUV weighing 2447kg? I would argue, not.

The GLE 53 requires the top-shelf 98 RON hydrocarbons to fill its 85-litre tank, giving it a maximum theoretical range of 726km between fills.

The three M5 elements start with daily usability. We trundled out of Bathurst in electric mode, with the adaptive dampers (and other myriad settings) in Comfort. 

The M5 has steel springs, double wishbone front suspension and a five-link rear axle, all of which has been heavily reworked by the boffins at M. Naturally, the ride is firm, though in Comfort the body moves through its motions smoothly. 

The M5 is an effortless tourer, its eight-speed automatic shmoozing through ratios as it climbs and descends steep gradients. Wind and tyre noise insulation is good on coarse chip tarmac, though a bit more burble from the V8 would be appreciated. 

The M5 has nine adjustable parameters to wake it up: 'Drivetrain', 'Energy Recovery', 'Drivelogic' (gear shift aggression), 'Chassis', 'Steering', 'Brake', 'M xDrive', stability control settings and 'M Sound'. Favourite settings can be stored to the wheel-mounted M1 and M2 buttons. 

With the dampers still in Comfort the M5 remains fantastically capable with power delivery from the xDrive mighty rewarding on corner exit. Sport dampers sharpen the experience up further, amplifying the M5’s surprising agility. Thank the rear-wheel steer for this big sedan’s switchback performance. 

Step beyond the limit of grip, brake too late, or get on the power too early, though, and the M5’s mass reveals itself rapidly. It doesn’t help that the accurate steering is devoid of feel. The brake-by-wire pedal is too numb and light, as well, making it tricky to judge grip levels on the road.

Feel is less of an issue on a dry Mount Panorama circuit, where the M5 turns out to be a total pussycat. The all-wheel drive, consistent dynamics, strong brakes and well-tuned stability control make for an approachable but seriously fast sedan.

The responsive transmission will hold gears to redline and is eager on the downshift in its most aggressive setting while tactile shift paddles make commanding ratio changes yourself that bit more engaging. 

Prodigious punch out of corners is matched by the impressive consistency of the carbon ceramic brakes. The M5 pulled up for The Chase every time with minimal fuss, even from above 250km/h.

Similar credit goes to the 285mm front and 295mm rear Hankook S1 Evo tyres which remained consistent and predictable all day despite reaching temperatures over 130 degrees, according to the tyre pressure monitor.

This Benz feels about as imposing from behind the wheel as it is to look at. Straight away, you'll notice you tower over the road. I felt as though I was sitting high enough to be on the roof of passing hatchbacks, so there's nothing traditionally 'sporty' about it from the get-go.

I know you're probably thinking visibility is average with that roofline, and you'd be right. You just can't see much, full-stop, out the back.

Thankfully, an array of sensors and very wide-angle mirrors help with overall visibility, so you won't have to be too paranoid about unseen vehicles in your blind spots.

I'm pleased to report all the technology which goes under this SUV's skin is evident when it comes to the drive experience.

The hybrid tech is ultra-slick and impressive in every department, from trawling in traffic to the curvy stuff and the open road.

The responsiveness of this powertrain is something to be experienced (with the pre-spooled turbo) and the way the hybrid motor in the transmission smooths out shifts removes all the worst characteristics of a traditional torque converter automatic.

One thing to note about the GLE 53 – while it's quick, it's not quite a fire breather. There's no getting around this car's almost two and a half tonne weight, and while I love the smooth feel and note of the 3.0-litre straight six, it's simply not as thunderous or full of theatre as I imagine the 63 S will be.

Despite its height and weight, the altered steering ratios and 48-volt driven suspension and anti-roll systems cause a suspense in belief when it comes to the corners.

And grip levels are certifiably absurd with those gigantic rear tyres also pitching in to do their part to help something this large deny gravity and physics.

It's not all amazing though. You really feel every millimetre of this SUVs width, and at the end of the day there's no getting around it. It just doesn't feel anything like a sports machine in the traditional sense.

When it comes to ride quality, the GLE impresses, but has its limits. Sure there's air suspension at work, but it offers up nowhere near the ride quality of the more comfort-tuned GLC 300e I recently tested.

Seems as though there's an inevitable cost to keeping the GLE feeling well and truly planted at all times.

On the freeway the GLE Coupe is ridiculous in the way it can basically drive itself, so this offers up a real plus for those looking for a balance of performance and sensibility for longer trips.

It would be no good having a 2.5-tonne rolling tech showcase without top-tier safety to match, and the GLE 53 Coupe doesn't disappoint.

Standard is autobahn-spec auto emergency braking, which combined with lane change assist is beyond just the radar cruise in most cars, it's truly autonomous.

Don't try this at home, but the GLE is capable of completely driving itself on the freeway should you... theoretically... let go of the wheel.

Also included is blind spot monitoring, rear cross-traffic alert, traffic sign recognition, and driver attention alert.

There's a top-down camera suite, too (will help maneuvering given it's tough to see over the dash and out the back), and a compliment of nine airbags.

You won't be surprised to hear the GLE range is covered by a maximum five-star ANCAP safety rating to the stringent 2019 standards.

In Australia, BMW has moved to match other manufacturers in offering a five-year/unlimited kilometre warranty on all its cars. 

Servicing is recommended on a condition basis, with the M5’s multimedia system prompting a visit to the mechanics. BMW offers pre-paid service packs for five years/80,000km at a price of $5059 for the basic offer and $8152 for 'Inclusive Plus', which covers brake pad and rotor replacements. 

It is expensive next to a regular 5 Series but when you consider the purchase price and performance level, the M5’s service pricing is not astronomical. 

Mercedes has recently made a jump to the front of the luxury segment, offering an industry-wide standard of a five-year/unlimited kilometre warranty. Here it is only rivalled by Korean newcomer, Genesis.

Service intervals occur once every 12 months or 25,000km and prices can be pre-packaged at a discount.

A three-year service plan can be had for $2800 ($3500 if you choose to 'fix' the price), four years can be had at $3800, while a full five-year plan will set you back $5200. Not cheap, but then, neither is the car itself...