Kia Stonic vs Toyota GR Yaris

What's the difference?

Unlike a lot of rivals in this segment, the Stonic's actually quite a bit of fun to drive, and that alone earns it a tick from me.

Yes, it can feel underpowered in places, especially when you're trying to do high-speed overtakes or if you're on a really engaging road and on and off the accelerator. But just cruising around, the little powertrain gives you plenty to get around the city.

And I guess that is the point. This does feel like a very city-friendly vehicle, even if it is undeniably showing its age in places.

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

Note: The author, Andrew Chesterton, is a co-owner of Smart As Media, a content agency and media distribution service with a number automotive brands among its clients. When producing content for CarsGuide, he does so in accordance with the CarsGuide Editorial Guidelines and Code of Ethics (https://www.carsguide.com.au/ethics), and the views and opinions expressed in this article are solely those of the author.

The GR Yaris GTS with the Aero Performance Package is a so wonderfully special with its brilliant engineering, mind-blowing dynamics and fun-to-drive nature. The new aero package makes an already angry beastie look furious, making it the perfect enhancement that's also functional.

The only lower marks here are for warranty, fuel use and practicality. But if there was a score for fun it'd be a 10/10.

I'm not gonna spend too much time on the exterior design, because from most angles it largely looks a lot like a Kia Stonic, right? The big exterior change occurred up front, where the old Kia 'face' was retired, and replaced with an LED-trimmed front-end more in keeping with modern Kia models.

It is a tale of good and bad in the cabin of the Stonic. The good is the fact that it all feels very familiar and very Kia, which isn't a bad thing.

Th bad is some of the door materials aren't just cheap and hard plastic, but they feel a bit flimsy in places as well. Same with the centre console plastics. There are some elements where you could definitely lift up the ambience in the interior.

The GR Yaris exists so that Toyota could go racing in the World Rally Championship. As with many racing series it required Toyota to build a road-going version of their Yaris race car, also known as a homologation vehicle. It’s a good deal, they get to race, you get a race car for the road. And so the GR Yaris was born. 

Wildly different from a regular five-door garden variety Yaris, the GR Yaris is a hand-built three-door hatch with a wider track, wider and lower body and the use of forged carbon and aluminium for lightweight construction.   

The GR Yaris already looks very angry, but the GTS Aero Performance Pack makes it look furious. It adds a huge adjustable rear wing, fender ducts that channel air, a front spoiler lip that aids stability, a giant bonnet scoop to help release air, and rear bumper ducts to reduce drag. 

The GR Yaris’s cabin was redesigned for the 2025 update and that saw the dashboard angled more to the driver much like in a race car, but it's more functional than fancy and it’s all very plain.

Still, we’re not complaining. The seats are lovely and the red stitching is a nice touch but this isn’t a Lexus. It’s supposed to favour function over form and so the design is absolutely fitting. And by function I mean dynamics and not practicality.

In the GT-Line trim, you get the twin screen setup, which looks sharp, and I do like Kia's multi-function control bar, which takes care of things like navigation and media on the one digital screen.

It really is feeling a little bit old school in places. There's no wireless phone mirroring, for example, so you need to plug in. And even then you need to plug in with a USB-A rather than a USB-C, despite having both plugs at your disposal.

The other thing is that the GT-Line is almost $36k before on-road costs. And there are places where it just doesn't feel like that much money.

It's a case of what you see is what you get in the back seat of the Stonic. And what you see is... not that much.

There are two USB-C ports in the more expensive trims. There are bottle holders in each of the doors, but no cup holders, and no pull-down seat divider. It is a fairly sparse back seat experience.

What you do get, however, is the luxury of space. Sitting behind my own 175cm driving position, I had absolutely no problem with knee room and no problem with head room. In fact, even as an almost full-size adult, I reckon I could sit back there pretty comfortably, even on longer road trips.

The big news is the addition of a 48-volt mild hybrid system, and that 48-volt battery is under the boot floor. But because it's hidden under a flat partition, it actually doesn't impact boot space.

Kia is still claiming 352 litres with the rear seats in place and 1155 litres with the rear seats folded flat. You do, however, miss out on some under-boot storage. And there's no spare wheel to speak of, just a tyre repair kit.

The regular Yaris is small, the GR Yaris is smaller at 3995mm end-to-end and with two fewer doors. As a tall person (I’m 1890mm end-to-end) the space on board is adequate up front with just enough knee, head and elbow room.

The GR Yaris is a four seater with the two rear seats accessed through the front doors. There’s not much room in there for adults and not even my lanky 11-year old would be happy in there. Still if you need to carry three other people, technically you can.

Cabin storage is limited to fairly large door pockets and two cupholders between the front seats. There is a little shelf carved into the dashboard which is great and a small glovebox below it.

Boot space is tiny at 174 litres but again this is a small car with other priorities. 

The GR Yaris GTS Aero Performance Pack sits at the top of the model range with the six-speed manual version listing for $64,990 before on-road costs, while the automatic is $67,490. That’s $4500 more than the standard GTS without the aero pack

The aero pack significantly toughens up the look of the GR Yaris, and also improves its dynamics. So if you plan to use the GR Yaris as a track car and drive it hard and fast, the kit will help.

That's thanks to improved down force from the giant rear wing, air ducts in the fenders to improve steering under braking, a front splitter for stability, underbody cladding to maximise airflow and a bonnet scoop to help release hot air from the engine bay.

The rest of the high-performance equipment comes on the regular GTS including a Torsen limited slip differential, high performance suspension tune and 18-inch forged wheels with Michelin Pilot Sport 4S tyres.

Standard features are the same as the regular GTS and include heated GR sports front seats with suede leather upholstery, a 12.3-inch digital instrument cluster, leather-wrapped steering wheel, aluminium pedals, dual-zone climate control, proximity unlocking and push-button start.

There's also an eight-speaker, eight-inch media screen with Apple CarPlay and Android Auto, and an eight-speaker JBL sound system.

The value is actually great considering all the high-performance engineering around you in the GR Yaris, and it will save you money from being tempted to go down the aftermarket route and buy equipment that hasn't been designed for the car by the people who made the car.

There are some nice comforts, too, like the leather seats, although the media screen is small.   

All Stonics get the same powertrain. A clever three-cylinder, 1.0-litre turbocharged petrol engine with 48-volt mild hybrid assistance. That means 88kW and 172Nm (up from 74kW). It has a seven-speed dual-clutch transmission.

We don’t have an official zero-to-100km/h time, but I’m estimating in excess of 10 seconds.

It still boggles my mind how 221kW and 400Nm is extracted from a 1.6-litre three-cylinder petrol engine but here we are. The GR Yaris has this set up with this output, along with all-wheel drive. 

Thanks to lightweight materials such as forged carbon and aluminium the GR Yaris weighs nothing in car terms - just 1300kg - so acceleration from 0-100km/h is a rapid 5.1 seconds.

I’ve already detailed the juicy engineering bits the GTS Aero Package is fitted with, from the limited slip diff to the adjustable rear wing, and it’s not an exaggeration to say that not many small hatches are this gifted with this kind of genius.

Our test car has an eight-speed automatic, which is easy to drive in city traffic. However, I'd opt for the six-speed manual because if you've come this far you may as well go the whole way.

The 48-volt system helps drop both fuel use and C02 emissions, with the Stonic pegged at 5.0L/100kms on the combined cycle and 116g/km for emissions, both of which are lower numbers than the last model.

The Stonic’s 45-litre tank could theoretically deliver a circa-900km driving range.

The GR Yaris is a hungry beastie that eats through its 50L petrol tank fairly quickly and then wants more. Toyota says you should see 9.1L/100km of 98 RON used in the automatic and 8.2L/100km with the manual over a combination of driving conditions. 

Stop-start city driving in traffic saw fuel use increase dramatically to 13.0L/100km in the auto. According to our car's trip computer, my own testing used an average of 14.5L/100km after mainly suburban driving.  

It is a really interesting drive proposition, this Stonic.

First and foremost, it does feel really well sorted in places. The steering has a nice weight to it. It's nice and direct. The ride is comfortable. It can get a little bit crashy over the harsher bumps, which actually isn't all that common in Kia products – like if you hit a cat's eye at speed, for example, you can definitely feel it in the cabin – but generally it's an engaged and comfortable drive.

Similarly, going around corners, even at speed, there's not a huge amount of body roll. The tires grip up pretty well, and it's really not a bad thing to throw around corners.

Where it gets interesting, though, is in its power delivery. At city speeds, so 50 or 60km/h, it's nice and easy and quiet. If you're gentle with the accelerator, and patient, it accrues speed in quite a calm, considered manner, without feeling overly sluggish.

Where it does start to fall apart a little bit, which is when you're at speed, say on a freeway for example, and you pull out to overtake and really plant your foot, and find there's really not a lot there. It can mean overtaking takes a lot longer than you might think. 

If you're on a really challenging road and you're kind of on the gas, on the brakes, on the gas and on the brakes, it can feel a little bit wheezy and uncertain, too, which is no doubt a byproduct of that relatively tiny powertrain.

We're definitely not talking rocket ship acceleration, and nor is it all that quiet in the cabin when you really start to wring its neck, which you will do occasionally.

But I think I've really stepped away from what this vehicle is supposed to be and what it's supposed to do. If you are easy with the accelerator, it can be a really calm, quiet cabin experience. And if you do find yourself on a twisting road, it actually sits and grips better than you might be thinking as well.

But there is no doubt the Stonic shines brightest in the city.

There’s been a multitude of electric cars through the test garage over the past six months and the GR Yaris is like a diamond found in a tub of Lego when it comes to driving.

So much sound. The three cylinder snarls on start up sending vibrations into the cockpit and up through the steering wheel, the transmission can be heard engaging gears, the big brakes creak as they’re released. And we’re hardly even moving yet. There’s so much theatre. It’s all real and I love it!

I even love that in the first 10 minutes of driving, a message appears on the instrument cluster asking that excessive acceleration be avoided while the engine is cool. You don’t get that beautiful inconvenience in an electric car.

But when you can excessively accelerate (on a race track of course, right?) it's wonderful and it's loud. Lift off, and the wastegate lets out a little "weeee!" in excitement.

I don't need to tell you that the GR Yaris handles better than just about anything in this price range and while the ride is firm and speed bumps feel like you’ve hit a gutter I still drove the GR Yaris every day, even to do the school run, because it is so much fun. Meanwhile my hybrid long0term test car looked lonely in the driveaway all week...

Being an automatic makes it easy to drive in traffic and the small size makes finding parking spots quick and simple.

Visibility is good, steering is excellent, the seats are big enough to accommodate me but snug enough to offer good lateral support, too.   

The GR Yaris has not been crash tested by ANCAP and the score for the regular Yaris can't be applied to the GR version.

Still the GR Yaris comes equipped with an array of advanced safety tech such as auto emergency braking (AEB), lane keeping assistance and a blind spot warning.

There are six airbags, two child seat ISOFIX points and two top tether anchor mounts in the rear row.  

The Stonic is covered by Kia’s seven-year unlimited-kilometre warranty, with capped-price servicing covering the warranty term.

Servicing is required every 12 months or 10,000kms, and all seven services will set you back $3780 combined.

The GR Yaris is covered by Toyota's five-year/unlimited-kilometre warranty which is lacking compared to many other mainstream manufacturers’ seven-year-plus warranties. The good news is that the engine and driveline is covered by an extra two-year warranty.

Servicing is capped at about $300 for the first six visits, although services are six months apart which means that after three years you’ll run out of capped-price servicing.

Still, Toyota’s reputation for reliability does provide some peace of mind.