Mercedes-Benz GLC300 vs Kia EV9

What's the difference?

The GLC300 Coupe isn't quite as great when it comes to being a family car as the regular SUV version of the GLC, and that's purely down to the sloping roofline which not only makes access more difficult to the second row but reduces boot capacity.

That said, the GLC300 Coupe makes a much better family car than a Mercedes-Benz C-Class sedan, or any sedan.

Easy and enjoyable to drive, packed with great features and still practical, the GLC300 Coupe would still cut it as a good family car.

The Kia EV9 GT-Line earns some serious family points with its practical and luxuriously appointed cabin. Each row enjoys ample amenities and space and you can’t discount the ability to fit five child seats!

That’s where similarities with its Carnival sibling end because the driving performance is too mixed for my liking. Some of its safety features don’t react well in real-world situations but if you’re looking for an electric car that will fit a big family, this ticks that box.

My son thinks the EV9 is really cool with the ambient lighting and two sun roofs. He also loves having his own climate control and sun-blinds, so he gives it a 10/10.

Coupe SUVs aren’t for everybody… they’re not even for lots of people. But the design of an SUV with its roof cut down so that it meets the tailgate at an almost sportscar-like angle appeals to more than a few fans. The thing is they don’t just like the look, they love it, and they also probably enjoy how much the styling makes other people cranky.

To my eyes the GLC300 Coupe is the best execution of the bodystyle compared to those of BMW and Audi. There’s an elegance to the GLC300 Coupe and the AMG-line adds a tough look that only enhances the solid, powerful but pretty look.

The GLC Coupe is a mid-sized SUV and this new generation model is a bit bigger the previous one and now measures 31mm longer at 4763mm end to end, it’s 1890mm wide, 1605mm tall and has a wheelbase of 2888mm.

It’s also more aerodynamic than ever. No seriously, it’s drag coefficient is now 0.27 and it looks like a bar of soap - and it's about as slippery as one, too.

More curved surfaces await inside with a dashboard that pours down into the large centre console and it's adorned with a sloping and large portrait-style media screen. 

At night or in tunnels the ambient lighting glows through the air vents and skirts the edges of the door trims, console and dashboard.

It’s a minimalist and high-tech cockpit with modern sports seats up front and a Nappa leather wrapped steering wheel with its twin blade design.  

So, how does the coupe design work for family practicality? Let’s take a look.

To be frank, the EV9 resembles a Lego car on steroids, but it turns heads. I’ve had more looky-loos peeking into the windows this week than any other car I’ve driven.

Once you get over the (very) square shape, there are some awesome design aspects to be had.

Like the flagship exclusive Matrix LED headlights and 'Ocean Blue Matte' paintwork that feels velvet-like under your hands. The black 21-inch alloy wheels and their aerodynamic covers look futuristic and cool.

The pronounced nose looks wide-set because of the positioning of the tall headlights separated by a strangely blank panel in the middle.

In fact, the whole exterior incorporates a slew of blank panels which reinforce the square look.

The flush auto door handles, big windows and dark roof give some cool-kid cred. The digital side mirrors are not for everyone but as a driver, you get used to them. The tech looks as though it's come straight out of sci-fi movie!

The interior is downright plush with the premium-looking upholstery and customisable 64-colour ambient lighting.

The dashboard has floating panels which create a cool 3D effect and even the badge on the steering wheel is illuminated.

There is a plethora of soft touchpoints throughout and the black headliner helps make the cavernous cabin feel almost cosy.

SUVs are the most practical cars for families because of the better access to the cabin thanks to their large doors and slightly elevated ride height, their big boots with wide and tall hatch openings and their high flat rooflines. They’re essentially raised station wagons.

A coupe-style SUV still has four doors but they are less boxy due to the sloping roofline which falls away quickly to meet the tailgate at a lower point. The effect is a sporty-looking shape but practicality is lost in this exercise of form over function.

The second row doorways aren’t as large as those on the regular SUV. I did a side-by-side test and felt like I had to duck under the sloping roof when getting out of the back seat.

The smaller opening also made it trickier to lift my toddler daughter into her baby seat.

The sidesteps are also surprisingly handy for bigger kids and my eight-year-old used them every time when climbing into the car.

Cabin storage is outstanding with huge door pockets and cupholders in both rows, and while the 545-litre boot in the GLC300 Coupe is 80 litres smaller than the cargo capacity of the regular GLC SUV, it's bigger than the previous version of the Coupe.

As for people space, there’s enough headroom for me at 189cm tall in the back seat and heaps of legroom, even behind my driving position.

I’ve mentioned the lack of climate control in the second row, but also should point out that there are no USB ports back there either.

There are USB ports in the big centre console box upfront and a long cord should be able to make it to the second row. 

There’s a wireless phone charger but it's housed in the bowels of the centre console too, and you’ll need to weave your hand while clasping the phone under the shiny black trapdoor, past the cupholders possibly with drinks in them and almost under the dashboard.

It’s large and you have ample space throughout the car. Even third rowers don’t miss out.

It feels quite van-like with the high seat positioning and extending centre console but you get a great view out of the massive windows.

The electrically-adjustable front seats are very comfortable but the mesh ergonomic headrests are a little too comfy!

The boxy steering wheel is nice to use but cut into my vision of the climate control screen from my driving position. I felt like I was looking around it a lot.

Individual storage is fantastic in all three rows. Up front you get a little pocket in the armrest and a huge shelf underneath the centre console.

The glove box is large, but curiously, has a small aperture. There are retractable cupholders in the centre console utility tray and drink bottle holders in each door.

The middle row has two drink bottle holders, four cupholders, two map pockets and a deep but narrow storage cubby at the back of the centre console.

Third rowers are not forgotten, either, with four cupholders and directional air vents to enjoy.

Amenities are great throughout the car and my son loves having the retractable sun-blinds and his own climate control in the middle row. It’s also an easy car to get in and out of, which we both enjoy!

The middle row's 60/40 split is a practical touch and they can be shifted manually or electrically with a one-touch button for access to the third row.

Speaking of which, there is an okay amount of room for my 168cm (5'6") height in the third row (if you push the middle row forward a smidge). And it doesn’t feel claustrophobic thanks to the wide windows.

If you have a pile of kids to shove in this car, you’ll be happy that this row also features two ISOFIX child seat mounts and two top tethers.

I wouldn’t want to be climbing into the third row to buckle in a kid, so reserve these seats for older kids.

The technology looks good but is simple to use which is always a good combination. There are plenty of charging options to choose from with each row getting two USB-C ports, while the front also enjoys a 12-volt socket and a wireless charging pad.

The touchscreen multimedia system is responsive and easy enough to use but the controls on this panel can be difficult to see and use. They’re not always responsive.

I like the satellite navigation and the way the head-up display pulls through the directions. There’s wired Apple CarPlay and Android Auto, too.

The digital instrument cluster is mildly customisable and easy to read. There is a little control panel on the driver’s door which houses the buttons for most of the added seat functions. But it’s hard to read as all the buttons are almost identical.

The boot is a good size when all seats are in use at 333L, which is plenty for my day-to-day errands, but pop the third row down and that jumps up to 828L.

Not as big as you might expect in a car of this size but that’s the compromise of going electric. The batteries have to go somewhere.

You do get a 52L frunk at the front, for cable storage. The loading space is level and you only get a tyre repair kit rather than a physical spare but it’s handy having the powered tailgate.

There are three variants for the EV9 and our test vehicle is the flagship GT-Line model that will cost you $121,000, before on road costs. That makes it the most expensive Kia to date, with the top-spec Carnival Platinum diesel only costing $67,580 (MSRP).

However, it’s nearest rival, the Mercedes EQS450 SUV, sits at $194,900 making the EV9 look downright cheap with the $73,900 price difference.

Yes, you could argue the badges would always offer a little price difference but Kia has made a true flagship model in the GT-Line because it is stupidly well-specified. It’s almost a case of what doesn’t it come with!

In terms of luxury appointments, occupants enjoy two sunroofs and two-toned synthetic leather upholstery. The electric front seats feature heat and ventilation functions, adjustable lumbar support and the driver gets a massage function.

The front seats have a relaxation mode, which I liken to the reclining seats in business class (someone send me on a trip to confirm!).

If you recline, add the sounds of nature feature and pop on the massage function, it’s like you’re in a day spa. Delightful.

The middle row outboard seats are also heated and ventilated which adds a lot of comfort and there’s a heated steering wheel, too.

Other standard equipment includes 21-inch alloy wheels, flush door handles, digital side mirrors, privacy tinted rear glass, pixel matrix LED headlights, 14-speaker Meridian premium sound and remote parking assist.

Practical features include a powered tailgate, extendable sun visors, retractable sun-blinds and three-zone climate control.

The technology is upmarket with dual 12.3-inch digital screens covering instrumentation and multimedia. There's also a 5.0-inch ‘quick-look’ climate control panel. A full tech run-down will come later.

The GLC300 Coupe has a 2.0-litre four-cylinder turbo-petrol engine making 190kW of power and 400Nm of torque.

There’s also an overboost function which allows the engine to make an extra 17kW and 200Nm just for a brief moment, but that extra dollop of grunt combined with the regular output provides impressive acceleration (0-100km/h in about 6.3 seconds) for overtaking or moving quickly when you need to.

A smooth nine-speed automatic transmission sends the drive to all-four wheels.

The GLC300 Coupe is all-wheel drive and while there’s a setting for rougher terrain, along with one for comfort, eco and sport, but I’d make sure that it doesn’t get any more adventurous than tame gravel and dirt roads.

Mercedes-Benz refers to the GLC300 Coupe as a mild hybrid and this is because it has a 48-volt system and an integrated starter-generator.

This type of hybrid doesn’t use electric motors, doesn’t drive the wheels and won’t save much fuel, but it will provide efficiencies by supporting the engine and when coasting, plus will reduce petrol consumption to a small degree.

The EV9 GT-Line is a pure-electric AWD with dual motors, one located at each end of the car, producing a maximum power output of 283kW and 700Nm of torque. It has a lithium-ion battery with a big capacity of 99.8kWh.

Overall, the EV9 GT-Line is powerful and capable of sprinting from 0-100km/h in just 5.3 seconds. That’s impressive for such a heavy car with a 2500kg (braked) towing capacity.

As we mentioned above the GLC300 Coupe's 48-volt mild hybrid system is not the kind of hybrid that will allow you to drive miles on electric power, nor will it dramatically reduce fuel consumption in the way a parallel, series or plug-in hybrid will. But every bit of efficiency helps.

Mercedes-Benz says the GLC300 Coupe will use 7.7L/100km after a combination of open and urban roads. 

We had the GLC300 Coupe for just two days, but in that time my family covered 176km of regular daily usage which took in motorways but mainly suburban duties such as the school run, supermarket dashes, that sort of thing.

In our fuel test we measured 14.48 litres at the fuel pump which works out to be an on-test fuel use figure of 8.2L/100km and not far off the manufacturer’s claim. 

While this fuel consumption isn’t overly high, a plug-in hybrid or even a parallel or series hybrid could return about 5.0L/100km or less.

Mercedes-Benz has dropped plug-in hybrids from its Australian range which is a shame because it would be good to see more efficient options in the GLC range. Of course if you want more efficiency from a Benz of the same size, there is always the fully electric EQB or EQC.

It's a hulk of a thing to have to move around and the motors perform brilliantly, but my energy cycle figure surprisingly came out at only 21.4kWh, after mostly open-road driving.

The official combined energy cycle is 22.8kWh, so that's a solid result.

The driving range is up to 505km, which takes the sting out of any range anxiety.

The EV9 features a Type 2 CCS port as well as an 11kW AC charger and you can get from 10 to 100 per cent in just over nine hours.

On a 50kW DC charger, you’d see that time drop to just 83 minutes to get from 10 to 80 per cent and it will shrink to 24-minutes on a 350kW charger.

A cool feature is the vehicle-to-load capability, so you can charge and/or power larger appliances on the go. Hello camping!

There’s a lot to like here but the short version is the GLC300 Coupe has a comfortable ride, but good handling, with a responsive engine, although rear visibility through the small back window is poor.

If we drill down a bit further I can tell you that excellent cameras around the car will help you check to make sure kids aren’t running around behind you and that forward and side visibility through the window is good.

An important takeaway is that the GLC300 Coupe is easy to drive with light steering and an engine that’s mild and controlled in its power delivery.

The gear shifter is mounted on the steering column, in the same way an indicator lever is. So putting the car into Drive, Reverse and Park is so easy and means you don’t have to take your hands off the steering wheel. 

As a family car I liked the good body control and composed ride. We have a small toddler that we can sometimes only get to sleep by taking her for a drive and we found that she could nod off and not be woken by potholes and speed bumps or too much leaning in the corners. 

Strangely for a large SUV, this car feels most at home in an urban environment. It’s in the city where it feels nimble and easy to manoeuvre. Zippy even, and you don’t notice it’s size.

But it’s a different story on the open road. 

At higher speeds there is a lot of movement in the body and thanks to its floaty suspension the amount of roll in corners starts to make it feel cumbersome.

It has the power to handle mountain driving or overtaking, but remains a bit unsure of itself in these situations.

The steering is responsive and concise, which makes for a nice driving experience in the city and navigating a car park.

The cabin gets very little noise thanks in part to sound-absorbing acoustic glass and foam in the tyres. It makes for a fairly pleasant journey overall.

As a passenger, though, I began to suffer motion sickness thanks to the digital side mirrors! Not an issue when I’m driving, but even my husband, who has an iron stomach, commented on how distracting they are.

It’s nice having a column shifter, as it helps open up the storage in the centre console but it can make pressing the push-start button a bit awkward.

The EV9 has a decent 12.4m turning circle and is relatively easy to park. The 360-degree view camera system is clear and I love having the front and rear parking sensors on this big boy.

But to access the front camera, you have to be in Drive. You can’t select it on the touchscreen, which is a pain when you’re manoeuvring into a tight space.

If you’re not confident, the EV9 also features an updated park itself feature which means you can park it remotely from your key fob. 

The EV9 has an extensive safety list and the blind-spot view monitor, which pops a video feed of your blind spot onto your dash, is a stand-out feature.

Standard safety items include blind-spot monitoring, lane departure alert, daytime running lights, forward collision warning, side collision warning, rear-cross collision warning, rear cross-traffic alert, intelligent seatbelt reminders, a 360-degree view camera system, as well as front and rear parking sensors.

There are other items but I need to call out their sensitivity issues.  

The driver attention monitor doesn’t always activate when you have sunglasses on and alerts you via multiple warning sounds and alerts on the instrument cluster.

The lane keeping aid is rather aggressive, which makes for a jerky on-road experience, and the adaptive cruise control with stop/go functionality isn’t nice to use.

Even on the shorter distance setting, it slows down way too fast when approaching a car in front.

Also, annoyingly, this model features all the warning chimes and alerts that are linked to the traffic sign recognition tech.

Go over the speed limit by one kay, chime. Enter a school zone, several chimes. If the speed sign changes, chime. If the traffic sign changes, you guessed it, CHIME.

Suffice it to say I don’t like this feature.

There's an option in the car set-up menu that turns off the warning sounds but keeps the important sign information. However, it's not permanent and has to be selected every time you turn on the car.

In better news, the Kia EV9 has just been awarded a maximum five-star ANCAP safety rating and features nine airbags which includes curtain airbags covering all three rows and side chest airbags for the second row.

Usually, you only see side chest airbags on the front row, so this is great! It also sports a front centre airbag to protect the front row from head clash injuries.

The EV9 has autonomous emergency braking with car, pedestrian and cyclist detection as well as junction turning assist.

It's operational from 10 to 80km/h but surprisingly, the car-to-car avoidance is only operational from 10 to 60km/h.

That upper speed figure usually sits closer to 160km/h. Unless there is a typo on ANCAPs website…

Families will rejoice that there is a total of four ISOFIX child seat mounts (two in the middle row and two in the third row) plus a total of five top-tether anchor points.

The car is large enough to accommodate five child seats and there’s plenty of room for front passengers when a 0-4 rearward facing child seat is installed on the middle row.  It’s pretty much a people mover at this point!

The GLC300 is covered by Mercedes-Benz's five-year, unlimited-kilometre warranty. 

Services are annually or every 25,000km. And you can buy a three-year service plan for about $3000.

The EV9 comes with a seven-year/unlimited km warranty, while its battery is covered for seven years, 160,000km. It’s normal to see an eight-year battery warranty term for EVs, though.

You can pre-purchase a three-, five-, or seven-year servicing plan, priced at $706, $1351 and $1997, respectively.

The seven-year schedule costs an average of $285 per service, which is good, but servicing intervals are more in line with a fuel-based car at every 12 months or 15,000km, whichever occurs first.