Mercedes-Benz Sprinter vs Kia K4

What's the difference?

Given the original Sprinter was released in 1995, it’s not surprising the current third-generation model feels like it’s benefitted greatly from decades of continuous refinement. Although the list price difference between our test vehicle and its closest Chinese rival is substantial, the 417 MWB Panel Van is hard to fault in terms of driver comfort, safety and all-round competence. It really is very good.

The new Kia K4 GT-Line has a lot to offer - an interesting design, lots of features and a pleasant driving experience. It’s not without its quirks and there are times when a more powerful engine may have improved it for me as a long-term prospect as I do some big kays every year but it ticks the boxes as a friendly urban dweller.

The 417 MWB Panel Van rides on a 3665mm wheelbase (the shortest of three Sprinter wheelbases) and is almost 6.0 metres long (5932mm), more than 2.0 metres wide (2020mm) and stands almost 2.4 metres tall (2378mm). Its 12.4 metres kerb-to-kerb turning circle is impressively tight for a vehicle of this length.

It rides on simple and rugged MacPherson strut front suspension, with a robust live axle/leaf-spring arrangement under the tail. Steering is via rack and pinion and it has disc brakes all around.

Look beyond the optional silver metallic paint on our example and there’s extensive use of unpainted dark grey plastic on all the external surfaces where hard-working vans are most prone to wear and tear, including the hubcaps, front/rear bumpers, grille, door-handles/mirror shells and along the sides.

Its work-focused exterior styling is nicely integrated, combined with an equally neat and functional interior design that offers a visually-pleasing combination of patterned fabric seat-facings and hard surfaces that blend different shades of grey with splashes of satin chrome and piano black.

We also like the feel and response of mechanical switches (rather than touchscreen prompts) for adjusting settings like cabin temperature, fan speed and media volume.

Have to admit I wasn’t convinced on the design of this new sedan at first as it can look a little out of sorts from certain angles. But the more time I spend with it, the more I appreciate its sharp lines and sporty rear shaping.

The small sedan market doesn't have a lot of options now because SUVs are so popular but it's nice to see a design that stands out and the fang-like LED light design at the front and rear, as well as the 18-inch alloy wheels make the K4 look very cool.

The rear doors look sleek because the handle has been hidden in the C-pillar and the K4 is particularly striking in our test model's 'Wave Blue' ($600 RRP) paint colour.

Head inside and you'll find a cabin that looks slick with a two-tone synthetic leather upholstery that feels supple underhand and a plethora of soft touchpoints under all the bits that touch.

The black headliner creates a posh space but the sunroof helps the cabin to feel airy when you need it to.

The dashboard isn't too wide, preferring a sharply linear shape and is headlined by a massive display panel that houses dual 12.3-inch screens and a 5.0-inch climate panel.

There is still a strong presence of plastics inside but you don’t tend to focus on them.

Unlike some other new cars hitting our market, the K4 hasn’t done away with its buttons and dials - and there’s enough to satisfy those who don’t like to rely on a screen for everything. The extra traditional element of the physical gear selector adds to its charm as well. 

With its 2215kg kerb weight and 4100kg GVM, our test vehicle has a sizeable 1885kg payload rating.

It’s also rated to tow up to 2000kg of braked trailer and with its 6100kg GCM (or how it can legally carry and tow at the same time), that means it can tow its maximum trailer weight while hauling its maximum payload to ensure optimum versatility.

The cargo bay, which offers a cave-like 9.0 cubic metres of load volume and internal lighting front and rear, has internal dimensions of 3316mm length (with bulkhead), 1732mm width and 1719mm height.

So, with 1350mm between the rear wheel-housings, it can comfortably fit two standard 1165mm-square Aussie pallets or up to four 1200 x 800mm Euro pallets, held in place by a choice of 10 floor-mounted load-anchorage points.

The cargo bay is accessed through a single kerbside sliding door with a wide 1260mm opening, or symmetrical rear barn-doors with large handles on each pillar to assist operator access.

The barn-doors also have internal storage bins and open to a full 180-degrees to assist forklift and loading dock access. Thoughtfully, their hinge design also holds the doors firmly open at 180 degrees, to minimise the chance of wind gusts slamming them shut with potential injury to the operator.

There’s also plenty of cabin storage starting with two tiers of bins in each door, with the highest being spacious enough to hold large bottles.

There's also a deep shelf on the passenger side lower dash, a large lidded compartment in the central dash-pad and overhead shelves with lockable storage on the passenger side. Plus, the dash offers a total of eight cup/small-bottle holders.

The base cushion of the two-passenger bench seat is also hinged at the front, which allows it to tilt forward and provide access to a large hidden storage area beneath.

A crew of three can travel in relative comfort (for a commercial van that is) thanks to a central seating position that provides a sturdy hoop-handle for support, sufficient knee clearance from the dash even for tall people, and a reasonably flat and spacious floor area.

The cabin also features the latest next-gen 'MBUX' multimedia system with 10.25-inch touchscreen, which for the first time offers wireless connectivity for Apple CarPlay and Android Auto.

There’s also digital radio and enhanced functionality including an optional navigation upgrade with seven years of map updates.

The K4 feels big for the class, especially compared to its nearest rivals and that translates to a cabin that feels adult-friendly in both rows. An impressive feat for a small sedan.

Access is the only time you will have moments of 'I should have opted for an SUV'. That's because you will get in your daily squats sliding in and out of the K4 due to its 140mm ground clearance.

The rear doors also feature a wide wing that juts out from the door handle and it catches your hip almost every time you go to close the door.

The wide front seats offer lots of comfort with thick padding and long under-thigh-support. The driver's side is powered with adjustable lumbar support but the passenger seat only offers manual adjustments, which is surprising for a top-grade model. However, both front seats enjoy heat and ventilation functions.

The back bench seat offers similar comfort to the front with seat padding and length but it's not terribly wide and two adults (or child car seats) will fit best.

Amenities and storage is decent for the class with each row enjoying four drink holders and two USB-C ports. Front rowers also get a wireless charging pad and 12-volt socket.

In the front there is a large glove box that fits more than just an owner's manual, a mid-size middle console and a centre console that features retractable cupholders to open up the space if you need to. A dedicated phone cradle with small spaces on each side rounds up individual storage for the front.

In the rear there are two map pockets, a small item cubby next to the USB-C ports and a pair of directional air vents, reading lights and a fold-down armrest.

The boot space is massive for the class at 508L (that's nearing mid-size SUV territory) but the aperture is narrow and I couldn't fit my big booster seat through the opening.

The boot is quite deep as well and you may find yourself climbing into it to retrieve items that roll into the back.

The rear bench seat has a 60/40 split which can help with storage and there is a temporary spare tyre underneath the floor.

While you don't get a powered tailgate in this model, the lid isn't heavy to operate and has a proximity opening function that keeps it practical when you have your hands full.

This just means when you approach and stay near the boot with the key fob on your person the boot lid will pop open for you.

The 12.3-inch touchscreen multimedia system looks great with crisp graphics and a responsive touchscreen. The menus are in an easy-to-understand layout which you'll get accustomed to in no time. The 5.0-inch climate display sits to the right of this system and it's nice to have it on display all the time.

The 12.3-inch digital instrument cluster isn't all that customisable but it's easy to read with large text and a small menu screen that shows nav directions, trip info or a compass.

The built-in satellite navigation system is easy to get going and to cancel a route guidance, it's a one button affair which is great for when you're on the go.

The system features wired and wireless Apple CarPlay and Android Auto. The CarPlay is simple to connect to and retained a steady connection this week with feedback from my callers that my voice was clear on calls.

The new K4 sedan is offered in four grades - the base-model S which has an optional 'Safety Pack' available, the mid-spec Sport and Sport+ grades and the flagship GT-Line, which is the model on test for this review.

The GT-Line is sharply priced at $42,990, before on road costs. This positions it in the middle of its small sedan rivals, the Hyundai i30 N Line Premium ($41,500 MSRP) and the Mazda3 Astina ($43,310 MSRP).

What the K4 GT-Line has going for it over its peers is a standard specification list that features some heavy-hitting technology.

This includes dual 12.3-inch displays, a 5.0-inch climate display, built-in satellite navigation with 10-years' of map updates, wireless/wired Apple CarPlay and Android Auto and dual-zone climate control.

Charging is taken care of by two USB-C ports for each row but the front row also enjoys a 12-volt socket and fast wireless charging pad in the dedicated phone cradle.

There's also an eight-speaker Harman Kardon sound system, over-the-air updates, digital radio, AM/FM radio, Bluetooth connectivity, and a 'Sounds of Nature' soundscape for added ambience.

The Kia Connect app is also included and this allows user access to the emergency call functionality (e-Call), remote control functions for the vehicle, as well as vehicle status monitoring.

Premium equipment includes a tilt and slide sunroof with electric sunshade, two-tone synthetic leather upholstery, heated and ventilated front seats, an electric drivers seat (with two-position memory function and adjustable lumbar support) and a heated steering wheel.

For a small sedan, it comes packed with features!

The (OM654) 2.0-litre, four-cylinder, turbo-diesel, which meets Euro 6 emissions standards using AdBlue, produces 125kW of power at 3800rpm with peak torque of 400Nm served between 1700-2400rpm. The nine-speed torque converter automatic offers the choice of sequential manual-shifting using the steering wheel-mounted paddles.

The flagship grade is front-wheel drive and has a 1.6-litre four-cylinder, turbo-petrol engine that produces up to 142kW of power and 265Nm of torque giving this a more powerful presence than its non-turbo siblings (which only produce up to 112kW/192Nm).

However, while the power is adequate for the GT-Line there are times when the engine sounds like it's working a bit too hard.

The eight-speed torque-converter automatic transmission can also become flustered as it moves through the lower gears, especially when you’re accelerating quickly.

On the whole, the power delivery and outputs are more than enough for a city environment and the odd road trip.

The dash display was claiming average combined consumption of 9.5L/100km when we stopped to refuel at the completion of our 281km test, of which about one third of that distance was hauling a heavy payload (see Driving).

Our own figure of 11.7 (based on actual fuel bowser and tripmeter figures) was higher but still reasonable economy for a vehicle in this GVM class in mostly urban use.

So, based on our own figures, you could expect a ‘real world’ driving range of around 800km from its 93-litre tank, which has been enlarged from 71 litres as part of the latest upgrades.

With an official combined (urban/extra-urban) cycle fuel usage figure of 6.7L/100km and a fuel tank size of 47L, this model has a theoretical driving range of 701km. That does sit around 80 kays less than some of its rivals but it’s still sufficient for those wanting to do the odd road trip!

My on-test fuel usage has popped out at 9.2L/100km, which is based on figures achieved at the pump (32.05L) and my km travelled (348km).

I’ve done mostly urban trips this week with one longer open-road drive and overall I’m not too surprised by that figure because I’ve been pushing it hard but it could be better.

The K4 is a simple gal because Kia recommends a minimum 91 RON unleaded petrol to be used for all models.

Large handles on the doors and overhead shelves assist climbing aboard and there’s enough adjustment in the well-bolstered seat and leather-rimmed steering wheel to find a comfortable position.

Driver views from all angles are excellent thanks to well-designed mirrors along with cameras supported by active aids like blind-spot monitoring etc.

The cabin, with its high roof relative to seat height, has a spacious and airy feel and all controls are reasonably intuitive and easy to reach.

Unladen ride quality is surprisingly supple for a vehicle with a 6.0-tonne-plus GCM rating, combined with excellent steering feel that strikes a fine balance between minimal turning effort at low speeds (for loading etc) and firm handling response at higher speeds.

The drivetrain is also energetic, pulling strongly and cleanly from 1000rpm even though its maximum torque is tapped higher in the 1700-2400rpm zone. The automatic transmission has admirable refinement, with near-seamless shifting between its nine ratios.

The Sprinter is also impressively quiet at speeds up to 80km/h. Tyre and wind noise (the latter mainly around the large door mirrors) naturally increase at highway speeds, but remain far from intrusive. And with the engine requiring less than 2000rpm to maintain 110km/h, it’s well-suited to highway work.

To test its load-carrying ability, we forklifted 1.3 tonnes into the cargo bay which with driver equalled a payload of 1.4 tonnes. That's still almost half a tonne less than its limit.

Not surprisingly, it handled this load with ease, as handling and braking were largely unaffected and the ride quality became smoother thanks to such a big increase in sprung weight. Even so, the rear springs only compressed about 30mm.

It easily conquered our 13 per cent gradient, 2.0km-long set climb at 60km/h with this load onboard, as the auto downshifted to fourth gear to tap maximum torque when hauling this load to the summit.

Engine-braking on the way down, in a manually-selected second gear, wasn’t as robust but not unexpected given a 2.0-litre engine trying to restrain 1.4 tonnes of payload on a steep descent. Even so, the quartet of disc brakes efficiently kept speeds in check.

Overall, it was an impressive performance. However, we did note that the speed sign recognition function was not working for the duration of our test. And some welcome enhancements would be a driver’s left footrest and a fold-down inboard armrest for the driver’s seat, as fitted to its smaller Vito sibling.

As mentioned earlier, the power is adequate to move this car around on the open-road but you have to be a little aggressive on hills to keep your speed consistent.

It’s not always quick off the mark, though, and you’ll notice that when you have to cross traffic or enter a roundabout - so allow for extra car lengths. Once you get going, it’s responsive in the city.

The steering is sports-stiff and so is the suspension. This makes the handling feel nimble in turns and sure-footed when doing quick lane changes but you hear and feel every bump in the road. 

On-road comfort is okay around the city but the road noise is very loud inside the cabin and is particularly noticeable at higher speeds. You’ll have to raise your voice to chat to passengers in the back when you're on the highway.

The K4 has a small turning circle of just 10.7m and you can easily do a U-turn in spaces that others might have to do a three-pointer. This made the K4 feel friendly in small car parks and on ramps.

The direct steering makes it easy-enough to park, as does the reversing camera and front/rear parking sensors but I’m pretty disappointed that at the top grade-level, you miss out on a 360-degree camera system (tsk, tsk, Kia).

The Kia K4 has just been launched and hasn’t been tested by ANCAP yet, so is unrated but Kia is hustling to get it tested so it can join in on their strong five-star performance record. The K4 has seven airbags, including a front centre airbag.

The K4 GT-Line has all of the bells and whistles when it comes to safety equipment and includes the big-ticket items like blind-spot monitoring and collision avoidance, intelligent seatbelt warning (all seats), rear cross-traffic alert, front cross-traffic alert, lane keeping aid, lane departure alert, leading vehicle alert, emergency call functionality, side exit warning, rear occupant alert, traffic sign recognition, driver monitoring and alert, LED DRLs, dusk-sensing LED headlights, front/rear parking sensors and a reversing camera with dynamic guidelines.

The K4 GT-Line has AEB with forward collision warning, car, pedestrian, cyclist, and junction crossing detection.

The rear seat has two ISOFIX child seat mounts on the outboard positions and three top tether anchor points but two seats will fit best.

Kia has become well-known for having annoying sound alerts in their cars and while the K4 has them too - you can easily disable the most annoying one, the traffic sign recognition, by holding the steering wheel volume button in for a few seconds.

Warranty is five years/250,000km whichever occurs first and includes a roadside assist support package.

Scheduled servicing is every 12 months/40,000km. Pay-as-you-go capped-pricing for the first five scheduled services totals $5905, or a pricey average of $1181 per year. Service plans are also available.

The K4 GT-Line is offered with Kia’s seven-year/unlimited-kilometre warranty. That’s a pretty good term for the class and there is a seven-year capped price servicing program for a flat $3877 (averaging $554 per service), which is slightly more expensive than others in the class.

Servicing intervals could get annoying if you do big kays every year as they're spaced at every 12 months or 10,000km, whichever occurs first.