Hyundai Kona vs Mercedes-Benz GLS-Class

What's the difference?

It’s easy to see why the Hyundai Kona leads the Aussie small SUV category, with this hybrid version enhancing the car’s abilities in key areas. Sharply priced and well-specified, comfortable and practical with a hugely efficient powertrain as well as refined dynamic performance. It’s a compelling package. 

The GLS450d impresses as an entry-level grade, as it’s a more family-friendly allrounder than the specialised AMG and Maybach variants. Its combination of a torque-rich diesel 48V hybrid drivetrain, air-cushioned suspension and plush interior are as well suited to luxury urban travel as they are to grand touring, where its heavy towing and generous load-carrying capabilities can shine. Whether it’s worth around $200K drive-away, only those who shop at the top end of town can decide.

The Kona’s exterior mixes smooth curves across its softly rounded nose and swollen haunches with sharp lines and geometric shapes in the lower grille, wheel arches and rear bumper.

And when the current, second-generation version arrived in mid-2023 it swapped out its predecessor’s already slimline LED daytime running lights for an even thinner strip running the width of the car, in similar fashion to the Hyundai Sonata sedan and Staria people mover.

The single line light signature is repeated with the tail-lights, a brake, reversing and indicator cluster confined to the outer rear edges.

Throw in a conspicuous diagonal character line across the doors, and bright metallic accents making a visual connection between the top of the tailgate and the lower edge of the side glass and there’s a lot going on. 

Always a subjective call, but I don’t mind the Kona’s design, although our test car’s ‘Mirage Green’ paint finish leaves me (and my significant other) cold.

Inside, the colour palette is uniformly grey which contributes to a restrained, relatively low-key feel, although light trim for the headliner and pillar covers brightens the mood somewhat.

The dash treatment is cool and contemporary, comprising a wide wrap-around instrument and media screen panel next to a narrow tray on the passenger side.

Fit and finish is impressive and details like perforated centre panels on the leather-faced seats dial up the premium feel.

This is an imposing vehicle in extravagant S-Class tradition, riding on an expansive 3135mm wheelbase and stretching more than 5.2 metres (5215mm) long and more than 2.0 metres (2030mm) wide with a turning circle that's nudging 13 metres.

However, it’s just under 1.8 metres (1798mm) tall, so there’s no clearance issues when accessing multi-storey carparks. And with its side-steps (or ‘running boards’ in nostalgic Benz speak) most adults can step rather than climb aboard, although passengers of shorter stature during our test noted that assist handles on the A and B pillars would be handy.

Central to its sophisticated chassis design is adaptive air suspension, which uses a pneumatic or ‘airbag’ form of springing with adaptive damping to continuously optimise ride comfort and handling response according to road conditions and driving dynamics (see Driving).

The GLS’s styling is clean and uncluttered with tasteful restraint evident in its chrome and satin-chrome highlights, yet it projects a majestic quality with its prominent four-louvre grille and elegantly spoked alloy wheels.

The spacious and sumptuous seven-seat interior is visually pleasing and practical, with a subtle blend of surface treatments, contrasting tones, lots of soft-touch surfaces and exposed stitching. This is combined (thankfully) with physical dials, switches and ‘piano key’ buttons to control numerous interior functions, in preference to distracting touchscreen prompts.

Even though the Kona measures a relatively modest 4350mm end-to-end, it offers up copious amounts of interior space. Dr Who would be proud.

Lots of breathing room up front, with the ‘shift-by-wire’ auto transmission shifter’s location on the steering column freeing up extra space in the centre console.

There’s a lidded bin between the seats (the padded top of which doubles as a centre armrest) with an open tray the size of a shoebox in front of it (which includes a pair of swivel-out bottle or cupholders) as well as a wireless phone charging bay ahead of that.

Generous bins in the doors include a recess for large bottles, plus there’s a decent glove box on the passenger side and a handy open tray above it. Plenty of room to keep the bits and pieces of everyday life under control.

Power and connectivity for the driver and passenger runs to two USB-C sockets and a (180W) 12-volt outlet.

Switching to the back is where the Tardis factor steps up a notch, the Kona offering space more in line with a next-size-up medium SUV.

Sitting behind the driver’s seat set to my 183cm position there’s loads of leg and headroom and even enough shoulder room for three adults to get to know one another on shorter journeys. A close to flat floor also helps with foot room in the centre position. Worth noting the rear seat backrests recline slightly for extra comfort options.

No door bins as such but, again, there are recesses for bottles. Netted map pockets on the front seat backs are helpful as is a fold-down centre armrest, which includes a pair of cupholders.

Individual air vents for back-seaters (in the rear of the front centre console) is always a welcome inclusion, and there’s a small oddments tray underneath them. Another pair of USB-C sockets will keep devices charged.

Boot capacity is healthy at a class-competitive 407 litres (VDA), expanding to 1241L with the 60/40 split-folding second row seat folded.

There are storage wells behind the rear wheel tubs, multiple bag hooks and four tie-down anchors to help keep loads secure.

There’s a temporary space-saver spare under the boot floor, which gets a tick over the increasingly common repair kit option and you’ll be able to tow a 1.3-tonne braked trailer (600kg unbraked).

Although it has a hefty 2655kg kerb weight, our test vehicle’s 3420kg GVM rating provides a useful 765kg of load capacity, which should comfortably absorb the combined weight of up to seven occupants and light luggage. Or with the third row of seating folded, five occupants and heavier luggage.

It’s also rated to tow up to 3500kg of braked trailer and with its sizeable 6920kg GCM (or how much weight it can legally carry and tow at the same time) it can carry its maximum load while towing its maximum trailer weight.

So, that’s commendable practicality, given it would be well suited to owners that need to tow large caravans, boat trailers, horse floats etc in style without having to compromise much (if at all) on either passenger numbers or luggage capacity.

Driver and front passenger space and comfort is exceptional, as you’d expect. Storage includes a large glovebox plus a bottle holder and bin in each door. The front of the centre console has two USB-C ports, wireless phone charging and heated cupholders, while the rear of the console has a large storage box with a third USB-C port and padded lid that doubles as a comfy elbow rest.

Even tall passengers in the second row of seating enjoy spacious comfort, given I’m 186cm and with the driver’s seat set in my position I have ample knee clearance, foot room and head space.

However, the central passenger must contend with a transmission tunnel in the floor and shoulder room would be squeezy for three large adults, which is okay for short trips but a maximum of two would be ideal for longer journeys.

The rear of the centre console also treats second-row passengers to a pair of USB-C ports, adjustable air-vents and a control panel that allows independent climate adjustment.

There’s also a large bin/bottle holder in each door plus storage nets on each front seat backrest. The centre seat backrest folds flat to allow long items (skis etc) to slot between the outer backrests. And it also serves as a fold-down armrest, containing two cupholders and a lidded slimline compartment that’s ideal for hidden phone storage.

The third row is uncommonly spacious, even for tall people, with padded armrests on each side containing cup holders and twin USB-C ports.

The carpeted rear luggage area has four load-anchorage points, a first aid kit and 12v socket. With the third-row seats upright it offers 355 litres of load volume, which increases to 1350 litres with the third row folded and 2400 litres (or 2.4 cubic metres) with both the second and third rows folded.

Our Polar White test vehicle, which is the base grade in the three-tiered GLS range, comes standard with a 3.0-litre inline six-cylinder turbocharged diesel engine with 48V mild hybrid technology, nine-speed automatic transmission, permanent all-wheel drive and active air suspension for a list price of $189,100.

This pricing is higher than comparative entry-level grades offered by the two marques which dominate sales leadership in this segment, comprising the BMW X7 xDrive40d M Sport ($179,500) and Lexus LX500d AWD ($158,700).

The GLS450d’s standard features include 22-inch AMG alloy wheels with Continental 325/40 R22 tyres and a collapsible spare, ‘AMG Line’ body styling enhancements, aluminium-look illuminated side-steps with non-slip rubber studs, multi-beam LED headlights and more.

Step inside the keyless interior and you’ll find ‘Hey Mercedes’ voice activation, fingerprint scanner (which memorises individual comfort settings for up to seven users), panoramic sunroof, heat-insulating dark-tinted rear privacy glass and the ‘Premium Plus Package’ that includes heating/cooling for the front seats, heated rear seats, head-up display, separate front/rear climate control zones, heated cupholders and more.

There’s also a concert hall-like Burmester surround sound system controlled by a central touchscreen with digital radio and Apple CarPlay and Android Auto connectivity, plus wireless phone charging, multifunction Nappa leather sports steering wheel and USB ports front and rear.

Driver assistance includes the ‘Parking Package’ (360-degree camera, active parking assist and transparent bonnet), ‘Mirror Package’ (auto-dipping rear-view mirror and electric folding door mirrors with puddle lamp projection of the brand logo) and ‘Driver Assistance Package’ (blind-spot assist, exit warning, speed sign recognition, lane keeping etc) all included as standard equipment.

Of course, Mercedes-Benz offers numerous extra-cost options including a 3500kg towing package plus interior, exterior, suspension and wheel enhancements (including Nappa leather trim) for those who want their GLS with the lot, which can easily push the list price beyond $200K.

The Kona Hybrid is powered by a naturally aspirated 1.6-litre, four-cylinder petrol engine working in concert with a single electric motor, both driving the front wheels through a six-speed dual-clutch automatic transmission.

The all-alloy engine features dual variable valve timing and direct-injection to produce 77kW at 5700rpm and 144Nm at 4000rpm, the permanent magnet synchronous motor chipping in with 32kW/170Nm for a total combined outputs of 104kW/265Nm.

That power output is in the middle of the small hybrid SUV pack and torque is at the higher end. 

Kerb weight is a fraction over 1.5 tonnes and you can expect 0-100km/h acceleration in the high 10-second range with a top speed around 170km/h.

The GLS450d comes standard with a 3.0-litre turbocharged inline six-cylinder diesel producing 270kW of power at 4000rpm and 750Nm of torque between 1350-2800rpm.

This is paired with a 48V mild-hybrid system comprising a 48-volt battery (charged by regenerative braking) and an integrated starter-generator which provides both seamless engine stop-start and up to 15kW/200Nm of extra power and torque during acceleration.

A nine-speed torque converter automatic provides the choice of manual shifting using the steering wheel-mounted paddles, along with several selectable drive modes.

The active all-wheel-drive system continuously adjusts the engine’s torque delivery between front and rear axles (and individual wheels as needed) to maintain optimum traction and handling.

Hyundai’s official fuel consumption figure for the Kona Hybrid Elite, on the combined (urban/extra-urban) cycle is a miserly 3.9L/100km, the 1.6L engine emitting 89g/km of CO2 in the process.

Minimum fuel requirement is 91 RON ‘standard’ unleaded and with a 38-litre tank theoretical range is around 975km.

On test, over several hundred kays taking in city, suburban and freeway running, we saw an average of around 4.4L/100km, which is impressive and a big contributor to the car’s appeal.

Using our real-world test number, the range figure comes in at a still handy 860-plus km.

Mercedes-Benz claims official combined consumption of 7.8L/100km and the dash display was showing 9.0 when we stopped to refuel at the completion of our 368km test, which included the usual mix of suburban, city and highway driving with up to five passengers at times and light luggage.

Our own figure, calculated from fuel bowser and tripmeter readings, was close at 9.5 which is outstanding sub-10L/100km economy for such a substantial vehicle in mostly metropolitan use. Therefore, based on our own consumption figure, you could expect a real-world driving range of around 950km from its 90-litre diesel tank.

The first things that come to mind when it comes to driving the Kona Hybrid are comfort, quietness and lack of stress.

From an ergonomic point of view the dash and cabin layout make life easy. There are physical controls for key functions like heating and ventilation, as well as audio and drive modes. Not a fan of the hard driver’s door armrest, though.

The engine is quiet and the transition between combustion and electric power is seamless. It’s fun to watch the (available) graphic screen in the driver’s display illustrating where drive is coming from at any given moment. Without it you’d be hard-pressed to know.

Acceleration is more than adequate and the powertrain’s bias towards electric propulsion means take-offs are ultra-smooth. 

Suspension is by MacPherson-type struts at the front with a multi-link rear set-up and ride quality is outstanding. Despite the Kona Hybrid’s relatively large 18-inch rims, bumps and ruts don’t cause major disruption and the Kumho Ecsta PS71 tyres (215/55) are exceptionally quiet.

Steering accuracy and road feel are both good and drive mode switches between ‘Normal’, ‘Eco’ and ‘Sport’ are noticeable, the latter dialling up urgency and dynamic response.

That said, we found ourselves in Eco most of the time, without any penalty in terms of throttle response or cruising ability.

Torque vectoring helps keep everything buttoned down if you decide to press on through your favourite set of corners, the front seats remain comfy on longer drives while keeping you securely located and the ‘shift-by-wire’ electronic gearshift is slick.

Physical brakes are ventilated discs at the front with solid rotors at the rear and they operate with reassuring smoothness. An active hydraulic booster controls regenerative braking, adjustable through three levels. Warning: the most aggressive setting makes the car annoyingly ‘shunty’ at slower speeds.  

Driver-assist safety tech makes its presence felt occasionally, but never to a disturbing degree… with one exception.

Despite the ability to program a steering wheel button to short-cut directly to the appropriate screen, the need to cancel an incessant and sometimes inaccurate overspeed warning every time you start the car is a pain.

A tidy 10.6m turning circle helps in slow-speed manoeuvres as do front, side and rear parking distance warnings and a high-quality reversing camera.

The Kona Hybrid is as good or better than anything in the class when it comes to the drive experience.

It’s an enjoyable vehicle to drive, with multiple power adjustments for the seat and steering wheel combined with a large left footrest which provide supreme driver comfort and support.

The powerful and responsive turbocharged six-cylinder diesel and nine-speed auto are well suited to this application. The engine’s ample torque provides spirited acceleration from standing starts, taking only six seconds to reach triple-digit speeds.

This drivetrain would be well suited to heavy towing duties, given the 48V mild-hybrid system can contribute an extra 200Nm (in addition to the engine’s 750Nm), which raises the total theoretical torque output to almost 1000Nm.

The active air suspension provides a wonderfully cushioned ride that floats over bumpy roads, while maintaining excellent handling response and surprising agility. These commendable chassis dynamics, combined with the powerful and responsive drivetrain, makes the vehicle feel smaller and lighter than its dimensions and kerb weight would suggest.

Overall, it’s difficult to fault from a driver’s perspective, with the only exception being the voice activation function. This is often triggered by words or phrases other than ‘Hey Mercedes’ resulting in regular interruption of conversations. This needs some fine tuning.

The GLS does not have an ANCAP rating as it’s yet to be tested, but comes standard with a suite of passive and active safety features including nine airbags, auto emergency braking (AEB) with pedestrian detection and junction assist, blind-spot monitoring, traffic sign recognition, head-up display, rear cross-traffic alert, lane-keeping, adaptive cruise control with ‘distance assist’ (autonomously brakes/accelerates in heavy traffic), front/rear parking sensors, 360-degree camera and more.

There’s also two ISOFIX and three top-tether child seat anchorages in the second row, plus two more of each in the third.

The Kona is covered by Hyundai’s seven-year/unlimited-km warranty (upgraded from five years mid-last year), which is ahead of the mainstream five-year warranty pack.

Roadside assistance is complimentary for the first year, with the deal extended for another 12 months every time the car is serviced at an authorised Hyundai dealer. 

Speaking of which, scheduled servicing is recommended every 12 months/10,000km, which is a little lower than the (15,000km) norm for the category. After a complimentary check up at six weeks/1500km, the first seven services (in line with Hyundai’s ‘Lifetime Service Plan Pricing’) come in at $3782, for an average of $540 per workshop visit.

That’s on the high side considering an equivalent Toyota Corolla Cross (in line with ‘Toyota Service Advantage’ pricing) will set you back an average of $354 per service over the same period.

Hyundai has a network of 185 dealers covering every Australian capital, state and territory.

The GLS comes with a five-years/unlimited km warranty (better than BMW and Lexus) and five years of roadside assistance. Scheduled servicing is every 12 months/25,000km whichever occurs first.

Mercedes-Benz offers capped-price pre-paid servicing packages with three, four or five-year terms. For example, the total upfront cost of the minimum three-year term is $4090, or an average of $1363 per service.