Kia Rio vs Toyota Prius

What's the difference?

The Rio S Manual is a fun-to-drive little car with a big practicality and multimedia offering in a segment rapidly heading towards extinction.

While some elements of the drive experience are reminiscent of budget cars from 10-20 years ago, Kia makes up for it by wrapping the Rio in a contemporary looking and feeling package, ready for the buyer who needs no frills and demands no nonsense. Until the manual transmission goes the way of the dodo, there is almost no better option.

The Prius can rest its weary head. The Age of the Hybrid has begun. Even though this iconic eco car might have lost its ultimate purpose to more mainstream models in the last few years, it’s still the best execution of Toyota’s hybrid tech on the market and if you can look past its divisive-as-ever looks, it’s comfortable and practical, too.

The brand’s Australian division promises the Prius will stick around in one form or another, so we’re keen to see what its next iteration will look like. Plug-in? Fully electric? Time will tell.

While notable equipment is missing, the Rio reclaims lost ground with the way it looks, and to a degree, the way it feels.

Ever since this new generation hatch launched, I’ve thought it brings a slick modern design to the city-car space, and even in its most rudimentary form as-tested (our car even came in the most basic ‘Clear White’ paint) it’s a great looking little hatch.

Sure, it doesn’t have the romance factor of the Fiat 500, nor the more delicate curvature of the much more expensive new-generation Toyota Yaris, but it certainly has a more refined visage than, say, the MG3 whilst feeling a bit more grown-up than the Suzuki Swift.

Solid, squared-off lines give this car a sporty pose, and its frowny-face and blocky rear round out a stout city-car persona, and I especially like the way even this most basic trim is adorned with contrast pieces, a spoiler above the boot lid, and body-coloured door handles and mirrors.

Sure, the 15-inch steelies dress it down a bit, but on the Rio these leave the impression of financial prudence rather than cost-cutting.

Inside is basic but tidy. The overall look maintains a hint of sportiness, with an appealing symmetrical finish to the dash.

There’s no question the Rio is a budget model when it comes to the touch though, with everything either a soft polyurethane or a nasty hard plastic, so while it all might look neat it’s far from the most comfortable place to be for long periods of time.

The basic dot-matrix multifunction display, chunky plastic air-conditioning controls, and polyurethane items from the wheel to the handbrake and shifter are reminders of a bygone era, but the overall aesthetic of the driver’s space is pleasing.

The Prius is the very visage of economic motoring. Derided by big-engine lovers, and adored by the eco-crowd, the fact that the Prius’s wedge-shaped frame is more about function than form tells you everything you need to know about this car.

It blends with Toyota’s latest design language, the face and bodywork containing some subtle nods to other models that would launch after it, like the Corolla, Camry, and C-HR.

What always surprises me about even this top-spec Prius is its dorky ride height. For a car with such a low drag coefficient, it sits so far off the ground! The 17-inch wheels look almost out of alignment with the body in those wheelarches.

Round the back, the Prius’s integrated spoiler and glasshouse bodywork are as divisive as ever, with more extreme pointed light fittings leaning into the effect created by its boxy, rear three-quarter view and mirroring the shape of the LED headlights at the front.

Of course, this car is less about being looked at as it is about its drag coefficient of 0.24 Cd, which is one of the lowest on any production car.

Inside, things again prove divisive, with a minimalist dash, a swoopy gloss highlight piece that frames the central vents and multimedia screen, and an odd, centrally mounted dash cluster, which is a usability faux pas.

In the case of the I-Tech at least there’s a holographic display which can put up useful information to help prevent your eyes from drifting too far from the road. Still, I can’t help but feel like this whole interior ethos is futuristic for the sake of being futuristic, with a little less thought given to how practical it is, compared to the brand’s other models.

The leather-appointed trim across the wheel and soft plastics in the door and dash-topper are appreciated, and there’s attention to detail in the little ‘Prius’ logos on the vents. However, I found the dull multimedia screen to be susceptible to glare during the day, and the big integrated panel in which it sits is made from a tinny gloss plastic, which will easily to get covered in fingerprints and scratches.

I'd argue the key reason to buy the Rio at this end of the market is that it has the most space and largest cabin relative to its rivals, bar maybe the Suzuki Baleno.

All-round practicality is great, with front passengers scoring a low, sporty seating position with a high roof, and so much width in the cabin it almost feels like the Rio belongs in the next segment up.

Storage options up front include a large bottle holder and bin in each of the doors, dual cupholders next to the handbrake up front, and a large storage tray underneath the climate unit. Unlike the Yaris or Mazda2, the Rio features a small armrest console box, which gives a small lift to the ambiance of the cabin.

Back seat passengers are treated to great space for this segment, which feels nice and open courtesy of the large rear windows. At 182cm tall, I have airspace for my knees behind my own driving position, as well as relatively healthy headroom and ample width, which is again more like a car in the next segment up.

Rear passengers don’t get adjustable air vents, but there is a single USB port, a single pocket on the back of the passenger seat, and small bottle holders in each of the doors.

Perhaps the Rio’s biggest drawcard is its boot capacity, which at 325 litres is one of the largest in the city car class. Unlike the Yaris, Mazda2, or Suzuki Swift, the Rio will actually accept the CarsGuide three-piece luggage set with the rear seats up, although the rear view was obscured by the medium case.

Thanks to the boxy roofline, the Rio offers a cavernous 980L with the rear seats folded down, and despite its abundance of room, maintains a space saver spare wheel under the floor.

If nothing else, all of the Prius’s edgy design gives it plentiful interior space. Toyota granted this generation of Prius a low seating position and tall roof, which combine with the distant dash elements to make for a spacious cockpit for the front two occupants.

The seat design in the top-spec I-Tech is also cushy, reminiscent of the seats in high-spec Camrys, and I had absolutely no trouble finding a comfortable driving position. If there’s one thing to be said for the annoying, centrally mounted instruments, it’s that you don’t need to consider the position of the wheel interfering with their visibility.

The Prius’s total glasshouse grants superb visibility out the front and sides, with large wing-mirrors, too. The only downside is that integrated spoiler at the back, which makes for a distracting view out the rear mirror that I’m sure any owner will quickly become accustomed to.

Soft trims across the doors and centre console, even in the back seat, make the Prius cabin a comfortable place to be, too.

Ergonomics have not been forgotten, with the multimedia screen and climate unit having useful and easy-to-reach physical dials and toggles for all the key functions. Even changing gear is a breeze in the Prius, with its odd little rosebud-shaped shifter simply a flick of the wrist from where your arm sits.

I do wish Toyota had made better use of the large area under the climate unit, however. The front part of the centre console is exclusively for the wireless-charging bay alone, and the rest of the space is constructed from a smoothly contoured gloss-finish plastic panel. It has looks to match the Prius aesthetic, but it’s no good for storing anything other than a single phone. It would have been better to make a large bay here with a rubberised finish.

Thanks to the lack of a physical handbrake in the centre or any other buttons or functions, there are two large bottle holders with variable edges.

A huge centre-console box and large door bins round out the Prius’s front-seat storage options.

Room in the rear seat is excellent, my 182cm tall frame had stellar amounts of space for my legs and head, as the roofline continues through to that raised rear spoiler. The comfy seat trim continues, although the padding in the base is notably not as good as it is in the front.

There are some useful pockets on the backs of the front seats and a drop-down armrest with cupholders for rear passengers, too.

Finally, the awkward rear of the Prius makes for a fantastic boot capacity, one advantage this car still holds over its hybrid Toyota stablemates. Capacity for the I-Tech is a mid-size-SUV rivalling 502-litres (VDA), which easily consumed our CarsGuide test luggage set and is even bigger than the base Prius, at the cost of the space-saver spare wheel. The I-Tech only has a repair kit to go with its larger alloys.

This Toyota Prius in top-spec I-Tech form costs a whopping $45,825 before on-road costs, which is a tall order, especially given the fact that the technical advantage this car once had to help justify its price-tag has been lost to the rest of Toyota’s range.

An equivalent Corolla hybrid, even in top ZR trim, can be had from just $34,695, and even the much larger Camry in its highest hybrid SL trim is more affordable, at a suddenly cheap-looking $42,790. All three Toyotas are sourced from Japan.

Not a good start in the value battle, then, especially since those other Toyotas are not just hybrids, but great cars in their respective segments.

The Prius I-Tech’s most direct rival is the similarly shaped and sized Hyundai Ioniq Premium, which can be yours from $40,390 with competitive equipment. Hyundai is not only hunting Toyota with this car, but flexing its deep pockets by selling the Ioniq in Australia as not just a hybrid, but a PHEV and a full EV, too.

Thankfully, the I-Tech comes with some decent gear, sporting 17-inch alloy wheels, a 7.0-inch multimedia touchscreen with Apple CarPlay and Android Auto connectivity, digital radio, a 4.2-inch digital information display, a holographic head-up display, full LED lighting with auto-levelling, leather-appointed seat trim, auto dimming rear vision mirror, wireless phone charging, 10-speaker audio, and improved interior trims over the base car.

The I-Tech also scores a larger boot capacity and an improved safety suite compared to the base Prius. More on that in later sections of this review.

Is the Prius “good value” then? It's still a no, as all of this equipment can be had in bigger, more mainstream Toyota models, and far more affordable rivals. It’s a shame Toyota hasn’t brought the Prius’s cost down in the five years since this generation launched, because in today’s market it makes less sense than ever.

That said, there is a certain niche audience for this car. One that will always love its little innovations, like the fact that it has one of the lowest drag coefficients on the market, its stellar fuel-consumption number, and its claimed 40 per cent thermal efficiency.

The Rio is beginning to fall behind here with an antiquated 1.4-litre four-cylinder non-turbo petrol engine. Peak outputs aren’t far off where they should be for this segment, with 74kW of power and 133Nm of torque, although they arrive at the most distant end of the rpm range (6000rpm and 4000rpm respectively) so you need to rev it.

It can be clumsy to extract this power, too, with the engine paired in this circumstance to a six-speed manual which leaves a lot to be desired in terms of action and clutch feel.

While the abundance of ratios can be beneficial for fuel consumption, it’s clear this car was designed to be paired with the more modern three-cylinder turbocharged engine only available on the top GT-Line trim.

It wouldn’t be a Prius without Toyota’s signature hybrid synergy drive technology. In this most original case it consists of a 1.8-litre four-cylinder petrol engine, which uses the more thermally efficient but less powerful Atkinson combustion cycle, producing 72kW/142Nm, paired to a set of electric motors on the front axle, which can produce up to 53kW/163Nm.

Combined system output is rated by Toyota at 90kW, driving the front wheels only via a continuously variable automatic transmission (CVT). This system is the same one now also employed in the C-HR and Corolla hybrid grades.

The Prius’s electric motors source their power from an older design nickel-metal hydride battery (instead of the more modern lithium-ion setup) located under the boot floor.

The Rio S manual has an official combined cycle fuel consumption rating of 5.6L/100km, which is about right for a light car with a small engine.

On test, covering largely urban kilometres, I saw a higher but not unreasonable 7.4L/100km. Still, this number isn’t too far off what some larger cars with 2.0-litre engines are capable of.

Rios with this engine accept entry-level 91RON unleaded fuel, and have 45-litre fuel tanks. They are only compliant with Euro 5 emissions regulations.

The Prius’ sandpapered hybrid drive, low drag number, weight reductions, and low-rolling-resistance tyres add up for a stellar official/combined fuel-consumption figure of just 3.4L/100km. While its signature hybrid tech might be available on other Toyota’s, it’s here where the Prius still shines, undercutting the others by almost a whole litre every 100km.

But can it live up to that promise in the real world? Over my week of what I would consider to be reasonable ‘combined’ driving conditions; with plenty of traffic, freeways, and suburban driving, the Prius returned a stellar figure of just 4.0L/100km. This is not just one of the lowest figures I have ever achieved on a test car, it is even lower than the Corolla Hybrid that I tested over a three-month period. I couldn’t get that car below 4.9L/100km, despite by best attempts.

For a true rival comparison, my week-long test of the Ioniq hybrid in 2019 had the Korean managing a fuel number of 4.6L/100km.

You need not worry about kWh energy consumption for the Prius, as its hybrid system’s software manages the state of battery charge on the fly. It will simply run the engine to charge the battery if levels drop too low, although it always feels good to make the most of the motor’s regenerative braking to keep the battery topped up.

It’s clear that the Prius is still the king of hybrid, then. At least for the time being. All Prius models have 43-litre fuel capacities and are able to consume base-grade 91RON unleaded.

A six-speed manual with a tiny non-turbo engine is an absolute oddity in today’s new car market, but as a result of its rudimentary approach, there’s something refreshingly honest about the Rio S.

The engine requires a wringing to extract the desired result, and a lot of action on the gears, as six speeds proves to be quite a few to work your way through before you achieve cruising speed.

As so much interaction is required with the transmission, I wish it was tighter when it comes to the clutch which feels a bit doughy at the best of times.

The Rio is very organic, though, with next to no electrical assistance for any of its interaction points offering the driver a high level of control.

The steering is direct, but as a result of a cheaper rack (with less teeth compared to this car’s Stonic relation), it feels simple and brittle when it comes to feedback.

The same criticism can be levelled at the suspension, which errs on the side of firm. This attribute combines with the low seating position to make even this most basic Rio an absolute hoot in the corners.

But it can be a little crashy over every-day potholes and corrugations, despite the abundant amount of rubber cladding the 15-inch steel wheels.

Visibility is superb out of this little car’s big windows, making you feel in control of your surroundings (necessary in the multi-lane confines and tight parking conditions of a city), and ergonomics in the cabin are absolutely on-point with the large touchscreen elements easy to reach and the instruments taking a basic no-nonsense form.

While noise levels are okay at urban speeds, they pick up above 80km/h, making the Rio more unpleasant to drive over long distances than, say, the more upmarket-feeling Yaris.

The Rio does find its place in this price bracket as a fun-to-drive, but predictably rudimentary experience, for the niche audience of drivers seeking an entry-level car who are still able to shift gears themselves.

The Prius was responsible for popularising Toyota’s Hybrid Synergy Drive, and fittingly, it still feels like the best execution of the technology on the market. That instantly available torque from the electric motor is sleek, quiet, and easy. It feels as though the Prius can make more extended use of purely electric drive than not only its rivals, but all other Toyota and Lexus hybrid products.

Despite its awkward exterior looks, the ride and handling of the Prius are excellent, thanks to its robust TNGA-C underpinnings (in fact, the Prius was the car to debut this platform for Toyota). It tilts into corners nicely, despite a frumpy ride height, and deals with bumps in its stride. This is a comfortable car, and the Lexus influence here is undeniable. The steering characteristics are also smooth and responsive. I wouldn’t go so far as to say the Prius is fun to drive, but it is certainly comfortable and compliant.

What the Prius lacks is the lower, firmer, and more aggressive ride and handling characteristics of its Hyundai Ioniq rival, perhaps a telling insight into the trajectory of each brand.

These characteristics add up to an around-town driving experience that really is a breeze. It’s quiet in the cabin and at times genuinely hard to tell whether the car is using its electric motors or the engine. When it comes to bursts of acceleration, the Prius might surprise you. Using both the motor and engine in tandem, I found that the Prius can sprint from the line with an alarming urgency, more so than its Corolla sibling. With the same tech behind the accelerator pedal, it’s hard to imagine why.

Once the electric motor has reached its strictly defined limit, though, the engine breaks in with a vengeance, and this car does have an anaemic follow-through when the electric components fall to the wayside. As in other applications of this drivetrain, the 1.8-litre Atkinson-cycle petrol engine can be thrashy and noisy when a lot is asked of it.

Of course, driving in such a sporty manner is hardly the point of the Prius, and where it really excels is in that day-to-day traffic grind, where the hybrid system works largely in the background to maximise the time spent with the engine off. The best part? While you can really fall into the hybrid system’s addictive fuel-saving displays, which really encourage hypermiling, this is a set-and-forget system. You can drive the Prius like any other car, and it will be trim on fuel consumption anyway. It’s not like I was trying awfully hard to attain my weekly figure of 4.0L/100km, so I’m sure it can do better over the long term.

The Prius wears a maximum five-star ANCAP safety rating to the 2016 standards, although even in today’s market it has a great active-safety suite.

Standard modern active features on all Prius models include freeway-speed auto emergency braking with pedestrian and daytime cyclist detection, lane-keep assist with lane-departure warning, adaptive cruise control, traffic-sign recognition, and auto-high beams. Our top-spec I-Tech adds blind-spot monitoring and rear cross traffic alert, for an overall excellent suite.

All Prius varaints are also equipped with seven airbags consisting of the standard front, side, and head, as well as a driver’s knee airbag, and the standard array of electronic stability and brake controls are also present.

The Rio again gets the edge on its budget competition with a lengthy seven-year, unlimited kilometre warranty. In this space it only butts heads with the MG3, which offers a matching promise.

Roadside assist is included for up to eight years if you continue to service with Kia, and there's also a capped price service program for the duration of the warranty, covering up to 105,000km.

The Rio needs to be serviced once every 12 months or 15,000km, and prices range from $269 and $608 per visit, for an annual average of $409.40.

Not the cheapest servicing schedule we’ve seen, particularly when compared with the likes of Toyota.

Toyota’s range-wide warranty currently stands at five years or unlimited kilometres, which is really the accepted industry standard and matches its key Ioniq rival.

Annoyingly, however, the Prius needs to adhere to six-monthly or 10,000km service intervals. Said intervals are capped to $165 per visit for the first six visits under Toyota’s “service advantage” program, after which time you fall back to Toyota genuine servicing with significant price hikes to $221.97, and $425.47 for the next two services covering four years or 80,000km.

A year of roadside assist is included, after which time you will need to subscribe to Toyota’s program, from $89 a year.

While Toyota’s offering is on par with many, it’s hardly the cheapest or most comprehensive we’ve seen.