Mazda CX-8 vs Mercedes-Benz GLS

What's the difference?

So, what did my family think about the Mazda CX-8 GT SP diesel all-wheel drive? I love how it performs on the road - it's super easy to drive and you don't notice how large it is in a car park.

There are some great family-friendly features scattered throughout and I like how practical this is too with the extra seats and top-tether points. The multimedia system isn’t my favourite and I would have preferred to have seen a few extra airbags and a 360-degree view camera, but overall, it’s a good family car and gets an 8.0/10 from me. 

My son loved the sun blinds and the cool colour of the seats. He also gives it an 8.0/10.

The GLS63 is an intimidating beast from afar, but it rewards its occupants in almost every way. Yep, there really isn’t a box it doesn’t tick without serious compromise, such is its breadth of capability.

If there was ever a Swiss Army Knife of cars, the GLS63 is definitely a contender for the title, one that makes it very hard to wipe the smile off your face. Just make sure you can fit it in your garage first…

To be honest, I can't really tell the CX-8 and CX-9 apart on the road. They're both large SUVs that sport the classic Mazda bonnet - sharp and long. Up close, the CX-9 has a bulkier shape but otherwise they are remarkably similar.

The CX-8's darkened grille generates some interest with its lattice-work and there are enough shiny chrome accents scattered about the car that it looks pretty.

Yet, the sporty sharpness that Mazda is known for is still hinted at with its shaping and the 19-inch black alloy wheels.

Our model is finished in 'Platinum Quartz Metallic' and it is the highlight for the exterior styling for me. I think because it's such an interesting colour to look at - it varies a lot depending on lighting conditions. Sometimes, it almost has a sheen of pink to it and at others, it looks like pearly sand.

The interior looks polished and refined with its burgundy leather trim and soft-touchpoints. Again, there is a lot of chrome inside to make otherwise dull features, like air vents, pop out.

If the GLS63 was a Marvel superhero, it would undoubtedly be the Hulk. Simply put, it has road presence like few others. In fact, it’s frankly menacing.

Of course, the GLS is already pretty intimidating due to its sheer size and blocky design, but the GLS63’s full-fat AMG treatment takes it to another level.

Naturally, the GLS63 gets an aggressive body kit, with its purposeful bumpers, side skirts and rear spoiler serving as instant reminders of what you’re dealing with, but it’s AMG’s signature Panamericana grille insert that really hammers home the point.

Around the side, the GLS63’s 22-inch alloy wheels with staggered tyres (front: 275/50, rear: 315/45) make their presence known, positioned below the wheelarch extensions.

That said, some fun’s also had at the rear end, where the GLS63’s diffuser element integrates the foreboding sports exhaust system with quad tailpipes very neatly.

The focused Multibeam LED headlights also look the part, while the opposing LED tail-lights tie everything together outside quite nicely.

Inside, the GLS63 stands out from the GLS crowd with its sports steering wheel with Dinamica microfibre accents, and multi-contour front seats, which are covered in Nappa leather alongside the armrests, dashboard and door shoulders and inserts.

Of note, the doors bins are unfortunately of the hard plastic variety, which is very disappointing in a vehicle that costs this much. You would expect that cow hide would also been applied to them, but alas it isn’t.

The GLS63’s black headliner serves as an obligatory reminder of its sporting intent, and while it makes for a dark cabin, metallic accents are prominent throughout, while the optional trim (our test vehicle had carbon-fibre) mixes things up, alongside the ambient lighting.

And let’s not forget the GLS63 is still loaded with plenty of cutting-edge technology, including a pair of 12.3-inch displays, with one the central touchscreen and the other the digital instrument cluster.

Both are powered by Mercedes’ class-leading MBUX multimedia system and feature Apple CarPlay and Android Auto support. This set-up arguably remains the best there is today thanks to its speed and breadth of functionality and input methods.

The CX-8 is a very practical family hauler because there's ample room in all three rows. Yes, even adults will be able to squeeze into that third row without too many complaints!

All rows enjoy well-cushioned seats and up front they are electrically adjustable, but unfortunately, only the driver's side has lumbar support.

The middle row can slide forward manually or by using the electric button found on the side of the seats... but doing it yourself is way faster.

They do slide far enough forward that you won't embarrass yourself too much when you have to clamber into the third row. Where the seats have a 50/50 split-fold and manual adjustments (accessed via the boot).

In the first two rows there are lots of individual storage options but the front enjoys the most. The middle console is deep enough to be useful and I like the dual opening lid. Each row gets a couple of cupholders and drink bottle holders, too.

The charging options are great, with each row getting two USB-C ports and the front getting a wireless charging pad and 12-volt socket.

All of the controls and dials feel within easy reach and the 10.25-inch touchscreen multimedia system graphics are clear.

You can use it as a touchscreen or opt for the rotary dial but switching between the two was awkward for me. Especially, since the touchscreen function is disabled when you are using the wireless Apple CarPlay. This also has wired Android Auto, for those users. 

The amenities are practical throughout with a dark headliner, three-zone climate control and heated outboard seats and retractable sun-blinds in the middle row.

Good news for families because there are five top-tether points across the back rows and ISOFIX child seat mounts on the outboard seats in middle row, in case you need them.

You can fit a 0-4 rearward facing child seat and it shouldn’t impact on front passenger comfort. 

My six-year old found it super easy to get in and out of this car because of the 205mm ground clearance and wide door apertures. He enjoyed the high seating position, too, but was disappointed he couldn’t see out of the sunroof!

The boot space is a bit cramped with all three rows are in use at 209L but folding the third row opens up a more respectable 775L - perfect for the average family and its stuff!

The loading space is level, with the temporary spare tyre and clever storage compartments housed underneath. There is a retractable cargo blind and net, luggage anchor points and a 12-volt port, too. 

And, as always, I love a powered tailgate, which this has!

Measuring 5243mm, 2030mm wide and 1782mm tall with a 3135mm wheelbase, the GLS63 is an upper-large SUV in every sense of the term, which means it’s also very practical.

For example, cargo capacity below the load cover is decent, at 355L, but stow the 50/50 power-split-folding third row via the boot and it’s very good, at 890L, or drop the 40/20/40 power-split-folding middle bench, too, and it becomes a cavernous 2400L.

Better yet, the boot’s aperture is almost square, and its floor’s flat, while there’s no load lip to contend with, making loading bulkier items even easier. Up to four tie-down points are also on hand (depending on seating configuration) to secure loose cargo.

Under the false floor is the space-saver spare, which is to be expected, but what isn’t expected necessarily is the fact there’s also enough room there for the cargo cover when it’s not in use, which would be the case if six or more passengers are regularly onboard.

Moving into the power-sliding second row, the GLS63’s practicality is once again brought to the fore, with up to six-plus inches of legroom available behind my 184cm driving position.

There’s also two inches of headroom with the panoramic sunroof in situ, not to mention just enough toe-room. The GLS63’s small transmission tunnel and sheer width also mean three adults can be seated on the middle bench with few complaints.

Amenities-wise, the second row has map pockets on the front-seat backrest and a small fold-down cubby below the rear climate controls, with it containing two slots for smartphones and a pair of strategically placed USB-C ports.

The rear door bins can take one large bottle each, while a fold-down central armrest is also on hand, featuring a shallow tray and retractable (and flimsy) cupholders.

Alternatively, the $2800 Rear Seat Comfort Package fitted to our test vehicle subs in a tablet that can control the multimedia system, a wireless smartphone charger and a small cubby into the former, as well as a heated/cooled cupholder atop the rear of the centre console.

In the third row, it’s not quite as roomy if you’re an adult. With the middle bench in its most accommodating position, my knees still brush up against its backrest, which is to be expected given it’s primarily designed for children. I also have an inch of headroom there.

Nonetheless, getting in and out of the third row is relatively easy as the power-operated middle bench tumbles forward and provides just enough space to make entry and exit somewhat graceful.

When seated, rear occupants are treated to two USB-C ports and one small cupholder each, so they’re arguably taken better care of than those in the middle.

Child seats are well and truly accommodated, with four ISOFIX and five top-tether anchorage points fitted across the second and third rows, although the latter will inevitably prove to be a much tighter fit.

The driver and front passenger are still taken care of, with a front cubby taken up by two heated/cooled cupholders, a wireless smartphone charger, two USB-C ports and a 12V power outlet, while their door bins take one large and one small bottle each.

In-cabin storage options include the large central storage bin, which hides another USB-C port, while the glovebox is on the smaller side, with about a third of it taken up by the fragrance, which is pumped into the cabin to ensure the interior always smells its best.

Priced from $255,700 plus on-road costs, the GLS63 commands a $34,329 premium over its predecessor, although buyers are arguably getting more bang for their buck than before, even if it does sit well clear of the two other GLS variants: the $147,100 GLS450 and $153,900 GLS400d.

Standard equipment not already mentioned in the GLS63 includes regular metallic paintwork (our test vehicle was finished in Selenite Grey), dusk-sensing lights, rain-sensing wipers, power-folding side mirrors with heating, soft-close doors, roof rails, rear privacy glass and a power-operated tailgate.

Inside, keyless entry and start, augmented reality (AR) satellite navigation with live traffic, digital radio, a 590W Burmester surround-sound system with 13 speakers, a head-up display, a panoramic sunroof, heated seats (including middle outboard) and armrests, cooled front seats with massaging functionality, power-adjustable seats, a power-adjustable steering column, temperature-controlled front cupholders, five-zone climate control, stainless-steel pedals and an auto-dimming rearview mirror feature.

With BMW not offering an X7 M (although the slightly smaller $209,900 X5 M Competition is available) and the $208,500 Audi RS Q8 really from the segment below, the GLS63 does not have a direct rival in the Upper-large SUV segment.

In fact, the $334,700 Bentley Bentayga V8 is actually the model that comes closest to the GLS63 when looking for a seven-seater with a similar level of bent-eight performance.