Kia K4 vs Volkswagen Polo

What's the difference?

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 Polo GTI faces tough competition in the form of Hyundai’s recently arrived, very good, and well-equipped i20 N, as well as Ford’s sleek and super-capable Fiesta ST. But as mentioned at the start, VW occupies the hot-hatch high ground with the GTI badge, and this upgraded Polo is loaded with features, dynamically outstanding and on the leading edge in terms of safety. Time will tell if the higher price, higher spec strategy is the right one, but there’s no doubting this updated Polo GTI is a compelling package.  

Note: CarsGuide attended this event as a guest of the manufacturer, with meals provided.

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. 

Not exactly a massive change to the exterior of the Polo GTI with this mid-life refresh, but sharp-eyed car spotters will notice a new front bumper treatment including a revised lower grille, defined by a body-coloured border and flanked by LED driving lights.

The headlights have also been reshaped to mark the arrival of standard matrix LED beams, with the signature horizontal red keyline moves from the centre to the bottom edge of the upper grille. A continuous LED strip across the nose stands the car apart after dark.

Previously part of the GTI’s ‘Luxury Pack’, the ‘Faro’ design 18-inch alloys fill the wheel arches nicely, and overall the car’s compact, tightly wrapped body and finely chiselled lines are familiar.

At the back, the LED tail-light clusters have been extended laterally into the hatch door, but the car’s fundamental shape is unchanged. 

Inside the dash layout is the same, although the centre of the sports steering wheel has been massaged into a more organic shape with the airbag/horn now an oval rather than a circle.

The rest of the interior is relatively understated in typical VW fashion, the neatly sculpted sports seats trimmed with traditional ‘Clark’ tartan cloth on the cushion and backrest centres. And ‘Kings Red’ inlays in the dash, centre console and front door trims, are a reminder of the car’s heritage and sporty intent.

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.

At just under 4.1 metres long the Polo GTI is a decidedly compact hot hatch, but thanks in no small part to a relatively lengthy (2.6m) wheelbase, interior space is impressive.

The driver and front passenger have plenty of breathing room, and the rear is remarkable. At 183cm, sitting behind the driver’s seat set to my position, I enjoyed ample legroom, and more than enough headroom.

Width is another story, because while two adults will be fine in the back, there isn’t enough space for three to sit in comfort for any length of time. 

Storage options in the front include a small lidded box between the seats (which doubles as an adjustable armrest), two cupholders and various oddments spaces in the centre console, as well as the wireless charging bay in front of the gearshift. 

There are also pockets in the doors with room for (medium) bottles, a decent glove box, a shallow drawer under the passenger seat, and an overhead drop-down tray for glasses.

Map pockets on the front seat backrests, and small bins in the doors add extra practicality, but there’s no fold-down centre armrest or individual ventilation control for rear seaters. 

For connectivity and power, there are two USB-C ports in the front, plus another two in the rear, as well as a 12-volt socket in the front centre console.

Boot space is a healthy 305 litres (VDA) with the 60/40 split-folding rear seats upright, that number growing to 1079L with them folded down. 

Tie down anchors are handy for strapping loose loads, while shopping bag hooks help keep smaller bundles under control. And be aware, the spare is a space-saver.

Headline news is the Polo GTI’s before on-road costs price has gone up by close to 18 per cent, from $32,890 to $38,750. 

Why? More standard equipment; some new things and other previously optional features now included in the base price.

The aim is to bring the car into line with the specification the majority of customers are ordering, because Volkswagen believes the days of a ‘price leader’ Polo GTI are behind it. That is, pique a buyer’s interest with a keenly priced but relatively sparse base model, and they invariably add options once engaged in the process.

So, the Polo GTI has put a price gap on its two key competitors, the Ford Fiesta ST ($32,290) and Hyundai i20N ($32,990), but it’s now loaded with a whole lot of fruit for the money.

The new bits are ‘Matrix’ LED headlights, a centre airbag, and 18-inch alloy rims (up from 17s), while the elements moved from the options list to the standard equipment column are assistance features bundled under the ‘IQ.Drive’ umbrella including, blind-spot monitoring, rear cross-traffic alert, front parking sensors (joining those in the rear), ‘Park Assist’, adaptive cruise control, and auto-folding exterior mirrors.

Also included in the GTI’s base price are the ‘IQ.Light’ matrix LED headlights, ‘Dynamic Light Assist’ (auto low to main beam switch with light profile adjusted to avoid dazzling cars ahead or oncoming), ‘Premium’ LED tail-lights (with dynamic indicators), metallic paint ($600 on the Polo Life and Style), LED driving lights, dual-zone climate-control, front and rear carpet mats, ‘Digital Cockpit Pro’ (incorporating nav and phone functions), ambient interior lighting, wireless device charging, and sports front seats.

Then you can add ‘Discover’ nav in the 8.0-inch media touchscreen set-up, auto headlights, rain-sensing wipers, ‘Manoeuvre Braking’ (low-speed rear AEB), an auto-dimming rearview mirror, leather trim on the sports steering wheel, gearshift and handbrake lever, and six-speaker audio.

A ‘Sound & Tech Package’ is available for the GTI ($1500) incorporating a 9.2-inch multimedia screen, and a Beats branded premium audio system (digital eight-channel amp, 300 watts).

A Panoramic glass sunroof ($1500) is also offered, and premium metallic paint adds $300.

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 Polo GTI is powered by a version of Volkswagen’s 2.0-litre (EA888) four-cylinder turbo-petrol engine, driving the front wheels through a six-speed dual-clutch auto transmission.

The iron block/alloy head unit uses direct- and port-injection, variable valve lift on the intake side, and variable valve timing on the intake and exhaust sides to produce maximum torque of 320Nm from 1450 to 4390rpm, at which point peak power of 147kW takes over from 4390-6000rpm.

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.

VW’s official fuel economy figure for the Polo GTI on the combined (ADR 81/02 - urban, extra-urban) cycle is 6.5L/100km, the 2.0-litre turbo four emitting 150g/km of CO2 in the process. Not bad for hot-hatch with this kind of performance. 

Minimum fuel requirement is 95 RON premium unleaded and you’ll need 40 litres of it to fill the tank. Using the official consumption figure that translates to a range of 615km.

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 Polo launch drive program covered around 150km of city, suburban and freeway running from inner Sydney, through twisting B-roads to the city’s south, and sprawling semi-rural areas further west, topped off with a closed track session at the Luddenham Raceway.

Weighing in at a fraction over 1.3 tonnes, with 147kW/320Nm sent to the front wheels, the Polo GTI is capable of sprinting from 0-100km/h in 6.8 seconds, which is satisfyingly quick.

And the 2.0-litre, four-cylinder turbo-petrol engine’s dyno sheet must be a thing of beauty with maximum torque available from from 1450 to 4390rpm, and peak power picking things up at precisely the end of that plateau, remaining on tap all the way to 6000rpm.

So, mid-range punch is always there, and the six-speed ‘DSG’ dual-clutch auto delivers rapid, precise shifts, with wheel-mounted paddles dialling up the fun factor when you want to shift ratios yourself.

Combined engine and exhaust noise is agreeably rorty without tipping over the annoyance threshold, although the high-performance 215/40 Continental ContiSportContact rubber transfers a fair amount of rumble on coarser surfaces.  

The base suspension set-up is strut front/torsion beam rear, with the standard ‘Sport Select’ system built around switchable dampers, offering the choice of ‘Normal’ and ‘Sport’ modes. 

Normal is nicely composed with comfy compliance over longer undulations as well as higher frequency bumps and dips. But if the red mist descends and you’re ready for some fun the (noticeably firmer) Sport setting buttons everything down that bit more. 

As well as the damping, throttle response is faster, the DSG picks up the pace as does the steering. Even the exhaust is enhanced, although it’s via the synthetic ‘Sound Actuator.’ Boo!

Balanced and predictable in quick cornering, the Polo GTI’s electro-mechanically assisted steering is precise and beautifully weighted, with great road feel. And the car’s ‘Extended Differential Lock’ uses the traction control and braking systems to minimise wheel spin, maximise traction, and help limit understeer.

On top of all that, the carefully sculpted sports seats deliver secure location without compromising comfort, and the grippy sports wheel feels great.

Braking is by ventilated discs at the front with solid rotors at the rear, and even under the pressure of a flat-out track session (moderated with the help of some admirably patient tame racing drivers) they remained progressive and firm.

In more civilised surroundings the Polo’s size and excellent all-around vision (not to mention a clear reversing camera) make it a cinch to park. The combination of on-screen touch controls, and physical dials for the multimedia system is welcome. And the connection for Apple CarPlay and Android Auto is wired or wireless which is handy for those who prefer the surety of a wired connection or the flexibility of one less cable in their life.

The current Polo scored a maximum five-star ANCAP rating when it launched in 2018, and it must have been tempting for VW to save more than a few euros by side-stepping active and passive safety upgrades in this refresh.

But, bravo, it didn’t, the German giant re-submitting this updated version for assessment against more challenging 2022 criteria.

The GTI is loaded with a raft of crash-avoidance tech under the umbrella of ‘IQ.Drive’, including AEB (with cyclist and pedestrian detection), lane-keeping assist (with lane departure warning), ‘Multi-Collision Brake’ (automatically slows the car after a collision, reducing the chance of a secondary impact), driver fatigue detection, ‘Park Assist’ (perpendicular and parallel), front and rear parking distance sensors, rear AEB (low-speed), a reversing camera (with static and dynamic guidelines), adaptive cruise control (with speed limiter and distance warning display), and tyre pressure monitoring.

If, despite all that, a crash is unavoidable there are seven airbags on-board - driver and front passenger (front and side), front centre, and full-length side curtain.

A front centre airbag is the solution many manufacturers are using to meet ANCAP’s recently introduced, tougher criteria around head clash injuries. 

There are three top tether points across the rear seat for child seats and/or baby capsules, with ISOFIX anchors on the two outer positions.

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.

Volkswagen Australia covers the Polo GTI with a five-year/unlimited kilometre warranty, which is now the volume market standard.

The paint is warranted for three years/unlimited kilometres, “Through Corrosion” is covered for 12 years/unlimited kilometres, and 12 months roadside assistance is included.

Servicing is required every 12 months or 15,000km, with prices over the first five years ranging from a low of $455 to a high of $1498, the average per service coming out at $701, which is a pretty solid number.

Capped price servicing is available, however, over five- and three-year plans. Paying up-front for five years results in a $765 saving over pay-as-you-go.

A nice side benefit is the ability to fold servicing costs into the vehicle’s financing at the time of purchase, and the plan is transferable if you decide to sell the car before the five or three years is up.