Kia K4 vs Toyota Corolla

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 final score for this review makes it look as though the Corolla is a middling effort. The scores for each individual section of the review are well considered and fair. The Corolla does lack the practicality of some of its rivals. A lack of an ANCAP rating isn’t great and the powertrain is just okay. But it remains one of the most fun-to-drive hatchbacks on the market today, even seven years into its life, and I would wholeheartedly recommend the Corolla to anyone looking for a small car. If you can forgive some of the quirks, it is a reliable, adorable, fun and efficient small car favourite. 

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. 

It’s been around for a good seven years, but the current-gen Corolla hatch is still a smart design. It has a squat stance and looks as though it has sporty intentions (it doesn’t), and the head and tail-light treatment doesn’t look like anything else in the segment.

The Corolla has adorable proportions and a pert little behind in a sea of increasingly boring small SUVs.

However, in SX trim and in the ‘Sunstone Orange’ body colour of my test car, the Corolla gives off rental car vibes. Which is hardly surprising given lower grade Corollas are a favourite of rental companies.

Inside that vibe continues. This is where the Corolla is really showing its age.

There are various shades of grey throughout the cabin, with a mix of hard and soft plastics. The cloth seat trim is drab, which is a shame because some other brands have managed to make cloth cool again. Not Toyota.

The touchscreen sticks up out the top of the dash like an old iPad and the dash design is old but functional. 

There is nothing inspiring about this interior design. In saying that, of those aforementioned rivals, only the Mazda3 and the new Kia K4 have modern cabins.

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 Corolla is a small car and that is evident inside. You might bump elbows with your front passenger, but I have no problem with the front leg or headroom.

Those cloth seats might be drab but boy they are comfy, and the fronts have loads of side bolstering. 

The steering wheel has typically clear controls and looks and feels nice. 

As a more, shall we say seasoned model in the segment, the Corolla still has buttons on the dash for things like air con, but not too many. That bulbous centre stack and the centre console, however, could be better designed for the space.

As it is, the wireless charging pad is hidden under it at the far end of the console. It’s a bit fiddly to get your phone in and out. This is also where one of the USB-C ports lives.

The other one is in the central storage bin which is quite small, but also houses a 12-volt outlet. There are no other places to store things because of the rounded shape of the console, which also features a couple of narrow cupholders.

OurCarsGuide bottle had to be squeezed into the door storage cavity - only narrow, short vessels will fit properly.

That 8.0-inch multimedia screen is very easy to navigate, with logical menus and icons. However, it’s almost too basic, which is not helped by the all-white background. It could be a more engaging set-up but it’s also very hard to fault the functionality. Our Apple CarPlay maintained its connection the whole time with the car, too.

Space is quite tight in the rear, although I have enough headroom for my 184cm frame. Legroom is just okay behind my driving position. There’s more space in the back of a Hyundai i30. It’s also dark because of smallish rear windows and thick C-pillars. 

The rear seat backrest is quite upright, but, like the front seats, well cushioned.

Amenities are just average back there - there’s a weird cupholder high on the door, only a passenger side map pocket, no rear air vents and no USB ports, although you could easily use the one housed in the front central bin. There’s a rear fold-down armrest with two cupholders.

The rear seats split and fold 60/40 and they fold flat making for a better loading space.

The good news is the SX (and the base Ascent Sport) come standard with a temporary spare wheel, which is great news for a hybrid model. The bad news is, that reduces boot space to a paltry 217 litres. 

That’s off the pace of all of its key hatchback rivals, including the Mazda3 which has its own cargo concerns at 295L, and the Hyundai i30 with 395L.

The Corolla ZR hatch has more space at 333L but you only get a tyre repair kit instead of a temporary spare. 

If you’re dead set on a Corolla but need more cargo space, consider the smart looking sedan that has 470 litres.

Toyota dropped all exclusively internal combustion engine versions of passenger car models and car-based SUVs last year so the Corolla is now hybrid-only.

The grade we tested is the SX five-door hatchback which is priced from $35,260, before on-road costs. Interestingly, the sedan version, which has a much bigger boot, is $340 cheaper.

The SX sits in the middle of the Corolla range with the Ascent Sport the most affordable (from $32,110) and the ZR the priciest before you get to the fire-breathing GR Corolla hot hatch.

Direct rivals at this approximate price point include the Hyundai i30 N Line ($36,000 BOC), Mazda3 G20 Touring ($37,110), Subaru Impreza 2.0R ($35,490) and the Kia K4 Sport ($35,190), although that is sedan only for now.

You get 16-inch alloy wheels, cloth bucket seats, a synthetic leather steering wheel, auto-dimming rear view mirror, rain-sensing wipers, rear privacy glass, keyless entry and start, dual-zone climate control, USB-C ports, a wireless device charging pad, six-speaker audio, an 8.0-inch colour multimedia display with sat-nav, digital radio, Bluetooth, voice assistant and wireless Apple CarPlay and Android Auto. 

The standard features list could be described as adequate without being overly generous for the price. A head-up display (standard in the ZR) would be nice.

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.

Since Toyota dropped the petrol engine from the Corolla range, it’s a hybrid-only affair.

The powerplant is a 1.8-litre naturally aspirated petrol engine paired with Toyota’s fifth-generation hybrid system that incorporates a lithium-ion battery, which is lighter yet more powerful since the 2022 update.

The Corolla drives the front wheels exclusively via a continuously variable transmission (CVT).

It’s not the punchiest engine and could do with more poke, but Toyota does do hybrids well. 

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.

According to Toyota the official fuel-use figure for the Corolla hybrid hatch is 4.0-litres per 100 kilometres and CO2 emissions sit at 90g/km.

While the trip computer said 4.8L/100km at the end of our week, my own fuel consumption calculation came to 5.8L.

You will only need 91 RON 'standard' petrol to fill up the Corolla.

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).

Most generations of Corollas have been solid, dependable and occasionally, even fun to drive. 

My first car was a Holden Nova GS hatchback, which was a rebadged version of the seventh-generation Corolla. I loved that car. It was zippy, fun and super economical.

The same principles generally apply to the current-gen Corolla. Thankfully, Toyota’s former CEO, Akio Toyoda, insisted all models from the Camry to the Kluger needed to be injected with more fun. And he succeeded with the Corolla. So much so that they've spun off a wild GR performance hot hatch version.

The Corolla sits low to the ground and it just feels much more connected to the road than a small SUV can. Even in mid-range SX guise, the Corolla can hug a corner and there is ample grip to ensure a fun drive on your favourite winding road.

Sure, the hybrid powertrain might not set your heart racing, but it is quick enough from a standing start and it lacks the lag of some of its turbocharged contemporaries. There’s also plenty of poke on tap for a small car when overtaking.

Even though it has a sporting edge to how it handles, the Corolla SX has been tuned for comfort first and foremost and this is another area it excels. The damper set-up ensures the Corolla soaks up speed bumps, nasty potholes and whatever else our shoddy roads can throw at it. At no point in my seven days with the Corolla did I complain about a harsh bump or thud.

Steering has a mechanical feel but it is still sharp, adding to the ‘chuckable’ vibe of this hatchback.

The powertrain can be noisy when pushed and combined with a CVT auto it’s the nicest sounding engine out there. Also, the transition from electric to petrol power isn’t particularly smooth. Other carmaker’s hybrid offerings - like Honda for example - are close to seamless. 

Some road noise gets into the cabin but it’s no deal breaker.

The Corolla is currently unrated by crash safety watchdog ANCAP. It did achieve a maximum five-star rating back in 2018 but that expired at the end of last year.

Safety features are largely standard across all grades and the SX comes with auto emergency braking (AEB) with pedestrian and daytime cyclist detection, lane departure alert with steering assist, speed sign recognition, 'Lane Trace Assist', adaptive cruise control, a blind spot monitor with safe exit assist, a rear cross-traffic alert, reversing camera and front and rear parking sensors and a rear occupant alert.

It doesn’t have a driver attention alert, and it’s all the better for it.

The lane keeping aid is well calibrated and subtle in its interventions, but the adaptive cruise let the speed creep several kilometres over the set speed on several occasions. 

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.

The Corolla is covered by Toyota’s five-year/unlimited kilometre warranty, which, given Kia, MG, GWM, Jaecoo and more have longer terms (not to mention Nissan and Mitsubishi’s conditional 10-year terms) is now officially trailing its competitors.

However, the capped-price servicing plan of up to five years costs just $250 for each service, which is incredibly competitive. The service schedule is every 12 months or 15,000km, whichever occurs first.