Hyundai Accent vs Mercedes-Benz Gls450

What's the difference?

It might be getting harder and harder to hide its age, but there is still plenty to like about Hyundai's cheapest car. Those who really love to drive need not apply, and nor should long-distance travellers, but the Accent Sport's alloy wheels, true smartphone integration and plenty of power and USB points will thrill its younger owners, while its long-range warranty and cheap servicing costs don't hurt either.

Still, if you think you can stretch to an i30, you should definitely drive one first.

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.

It looks good, the Accent, just not quite as good as its bigger Hyundai brothers. And that’s got to sting, if only a little bit. 

Words like "subtle", "restyled” and “enhanced design” pepper the Accent’s media information, and so we’re not talking massive changes. But the exterior of the Sport looks sharp, especially in the 'Pulse Red' of our test car. Other colours include 'Chalk White', 'Lake Silver', 'Phantom Black', 'Sunflower' (yellow), and 'Blue Lagoon', but there’s no green, orange or grey paint available.

First, though, don’t let the whole 'sport' thing fool you. You’ll find no Fast and Furious body kit, nor is there much in terms of a rear spoiler, side skirts or a rear diffuser. Instead, a silver-framed mesh grille (a smaller version of the one that adorns the i30) blends into the headlights that then sweep back into the body, while subtle power lines create a little dome in the bonnet, starting at the edges of the Hyundai badge and getting wider as they sweep back across the bonnet. 

Side on, the alloys are clean and simple, and a single style crease runs the length of the body, intersecting both door handles on each side. At the rear, though, the concave body styling doesn’t quite work so well, ending up looking busier than the rest of the car, and leaving it with too much body and not enough rear window.

Inside, as you can see from our interior photos, there is plenty of hard plastic, but there have been some design flourishes that give them a nicer texture and go some way to disguising the fact they’re hard enough to be used as a weapon in a roadside road rage dispute.

But it’s a simple and clean design, with patterned cloth (what, you were expecting leather seats at this price point?) seats, an uncluttered centre cluster and a sparing use of silver highlights that break up the black of the dash and doors.

You can also option everything from tailored floor mats to interior lighting, forming a kind of personalised premium package for the Accent Sport.

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.

It’s every bit as practical as you might expect, the Accent Sport, given that you’re unlikely to be using something this size as a pseudo moving van anytime soon.

The 4155mm long, 1700mm wide and 1450mm high (the sedan is 4370mm long) Accent Sport's interior dimensions feel spacious up front, and while the front seats are a little too flat, the cabin feels airy and light. There are two cupholders up front, too, and there’s room in the front doors for extra bottles. 

Like all Hyundais, the little Accent boasts most of the technology options favoured by younger buyers, like a USB point, an aux connection and two 12-volt power outlets all housed in a tiny storage bin underneath the centre console. There’s a sunglass holder, too, integrated into the roof. 

The backseat is sparse but spacious enough, with enough room for adults to sit behind adults in comfort - at least in the two window seats. That’s about it back there, though, with no technology options, vents or air-con controls.

Boot space is a useable 370 litres in hatch guise, but luggage capacity grows to 465 litres should you opt for the sedan, with both of those figures measured in VDA. Optional roof racks and rails (and other offical accessories like a rubber cargo liner, mud flaps or dedicated bike, snowboard and surfboard carriers) help increase the pint-size Accent’s load-lugging ability.

As does a handy (and optional) cargo liner that helps separate your groceries, sitting neatly under the cargo cover that shields you luggage from prying eyes outside. Perhaps unsurprisingly, you can’t get a factory-offered bull bar.

There are two ISOFIX attachment points, one in each window seat, as well as three top-tether points across the back row.

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 one Accent on offer is powered by a single engine; a petrol-sipping (there’s no diesel, LPG or turbo), 1.6-litre motor that will produce a solid-sounding 103kW (138 horsepower) at 6300rpm and 167Nm of torque at 4850rpm. They are good specs, and it stands up to most competitors in an engine vs engine models comparison. It pairs with a choice of six-speed manual transmission or six-speed automatic transmission.

There used to be a fairly underwhelming 1.4-litre engine size paired with a CVT auto in the now-axed Accent variant, but this bigger engine is much, much better, and makes for much happier reading on the specifications sheet.

The Accent is front-wheel drive only, with no 4x4, AWD or rear-wheel drive options available. It will serve up a 900kg braked and 450kg unbraked towing capacity, with an optional tow bar/ball fitted. Kerb weight is listed as between 1070kg and 1170kg.

The Accent Sport uses MacPherson strut front and torsion beam rear suspension (no sophisticated air systems on offer), and Hyundai doesn’t quote any 0-100km/h, acceleration or speed figures.

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.

For fuel consumption, Hyundai claims 6.3 litres (6.6 litres for the sedan) per hundred kilometres on the combined cycle. But as with all of these manufacturer-supplied figures, there’s always a some sort of variation in the real world km/l fuel economy.

Just how much variation is dependent on how heavy your right foot is, but after my (admittedly city-based) week with the car, the trip computer had my mileage at 11.0L/100km. If you were to adopt an eco mode driving style, that would surely improve, though.

The Accent’s fuel tank size is fairly small, with a fuel capacity of just 43 litres - perfect for the city, less so for long-distance cruising. Emissions are a claimed 146g (154g in the hatch) per kilometre of C02. 

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.

With its sharp design and gleaming alloys, the Accent Sport doesn’t look like an entry-level model, and nor is it immediately obvious that it’s the cheapest way into the Hyundai family. The downside, though, is it does feel that way from behind the wheel.

A little harsher, a little more road noise and a little more gruff than Hyundai’s more expensive models (including the very good i30), it’s the unfair victim of the brand’s staggering success, which has left the Accent feeling a bit old-school by comparison.

That said, it's perfectly suited to inner-city life, and if you’re cruising around using minimal inputs, it does it all smoothly and quietly. The steering feels a little slack at slow speeds, with plenty of dead air when you first start turning the wheel, but none of that bothers you much in the city.

With its sharp design and gleaming alloys, the Accent Sport doesn’t look like an entry-level model.

The grunt from that engine is refreshingly ample for a small car, and provides plenty of punch to get you moving from traffic lights, while the seating position is high enough that vision is great out of every window (except the rear - you’ll be using the reversing camera for that one).

Take it out of town, though, and the refinement begins to vanish. The engine sounds harsh under heavy acceleration, the transmission can be confused - especially around 80km/h, where moving your foot a fraction can force continual changes up or down, like it's wrestling with a big life decision. 

The only other question mark is over the suspension set-up, which for some reason favours sporty firmness in a car unlikely to be asked to achieve anything more dynamic than sitting at 50km/h. The result is a ride that can feel noticeably firm over bad road surfaces.

The Accent’s 140mm ground clearance (not to mention the fact it’s a front-wheel drive city car) should be enough to persuade you not to test its off-road performance. And its turning radius is 10.4m.

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.

It’s a very strong ownership picture, with the Accent Sport covered by Hyundai’s five-year/unlimited-kilometre warranty, and requiring a trip to the service centre every 12 months or 15,000km.

A capped-price servicing plan helps take the guesswork out of your service cost, too, with guide prices at between $245 and $345 per year for the first five years.

For known Hyundai Accent issues and common problems, complaints and faults - including any known clutch, suspension, gearbox, engine, battery or automatic transmission problems - head to CarsGuide's dedicated Hyundai Problems page. 

One of the most common mechanical questions asked is whether the Accent uses a timing belt or chain, and the Sport uses a timing belt. Check your owners manual for recommended durations between changing  it.

Hyundais traditionally score very well in international reliability rating surveys, which helps protect its second-hand ratings.

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.