Mazda 3 vs Kia Rio

What's the difference?

Given how effortlessly it traverses the mainstream and premium small car classes, the Mazda 3 might be the best value small car on the planet.

With racy styling, sports car handling, classy interior presentation and impressive, intelligent efficiency, there’s plenty to sink your teeth into here.

Poor rear vision, a dark back-seat area and smallish boot aside, it doesn’t have any glaring faults.

In a world overrun with SUVs, props to Mazda for evolving the small car so brilliantly to mask a half-decade of existence. Continuous improvements have made the 2024 G25 Evolve SP Vision an essential small car shortlist proposition, regardless of price.

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.

How is it that the current Mazda 3 is already five years old? This hatchback is still stunning, the sort of car you look back at when walking away.

The shape is sleek and almost coupe-like, with a shark-like nose, cab-backward-style long bonnet, upswept shoulder line and a fastback silhouette.

More importantly, it’s the way the light dances across the sculptured sides that draw the eyes in. Bereft of clutter, it makes you wish all mainstream manufacturers had the courage to be so daring.

We’ve said it before – the 'BP'-generation Mazda 3 (Axela in Japan) is the brand’s boldest C-segment hatch since the 1993 'BA' 323 (Astina/Lantis/323F).

But there’s a price to pay for such timeless beauty…

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.

There is a price to pay for all this quasi-coupe styling flair, and that’s a comparatively snug-feeling interior, though you’d never call it cramped.

Actually, the Mazda 3 is no less spacious than most of its competition in all but one area, with enough room even for 200cm drivers, along with sufficient shoulder width and ceiling height to match.

If you’re really tall, maybe that missing sunroof isn’t such a bad thing, after all.

Sat so low-down on cushy, enveloping front seats that offer plenty of comfort and support, this is the anti-SUV. Maybe Mazda should have called this the MX-3.

Sporty and spot-on, the driving position is a laid-back affair, with an emphasis on better ergonomics, as emphasised by the thoughtful placement of switchgear that’s all within easy reach, ahead of a beautifully flowing and layered dash. Proudly Japanese in flavour, it brings to mind functional minimalism.

Drilling into some of the 3’s finer interior details, the analogue-look digital instrumentation is super-legible, ultra-classy and gorgeously lit at night. As previously mentioned, the dials and surrounding air vents are reminiscent of the later Porsche 944 and 968.

It’s not just all for the sake of aesthetics, either.

Yes, it’s lovely, but the thinned-rim three-spoke steering wheel feels great to grip, with nifty little paddle shifters that are a delight to prod.

Same goes for the physical volume knob and climate-control buttons, sidestepping the need to get distracted and frustrated by virtual sub-menus.

And having a conventional gear lever with old-school Tiptronic-style shifts suits the 3’s athletic vibe.

Plus, forward vision is A-OK, ventilation is faultless, storage is better than you might expect, and the fit and finish is as good if not better than any of this 3’s German premium opponents.

Out back, the split-fold rear backrest is set at a comfortable angle, the cushion is well padded, and you’re provided with USB ports, air vents, and an armrest with two cupholders. More thoughtfulness.

But while knee room is fair, rear headroom isn’t great if you’re tall or wear a beehive, as the falling ceiling line reveals.

Vision out is limited by that rising window line and fat pillars. Getting in and out of the back requires some contortionist moves. And the small windows mean it can be gloomier in the back than a Smiths album.

Finally, at just 295 litres, the 3’s cargo capacity is disappointing. Sure, it eclipses the Corolla hatch’s 217L cubby, but other rivals are far larger back there.

At least the floor is wide and flat and there are 60/40-split backrests for cabin access for longer items.

Note that a space-saver spare wheel lurks underneath. Mazda argues there’s always the closely-related CX-30 if you need (slightly) more space (317L).

Meanwhile, at the other end of the 3…

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.

Value seems less important here when you’re contending with a limited list of potential options at this end of the market.

The Rio S manual currently wears an MSRP of $19,690, and if you’re able to shuffle cogs yourself, it counts its rivals as the Suzuki Baleno GL ($18,490), Suzuki Ignis GL ($19,490), or Fiat 500 Lounge ($19,550).

There’s also the option of the MG3 (from $18,990) or Kia’s own much smaller Picanto (from $15,990).

I’m pleased to report the Rio S is one of the best among these options, though. Not only is this car much more modern in terms of its platform and design than pretty much anything on that list, it packs great standard equipment, too.

The major wow-factor item is the Rio’s best-in-class multimedia system, consisting of an 8.0-inch touchscreen with wireless Apple CarPlay and Android Auto connectivity, just one of the areas where this car will grab eyes over rivals.

Elsewhere is a predictably honest list of standard equipment, including basic halogen headlights, 15-inch steel wheels, manual air conditioning, cloth seat trim with a polyurethane steering wheel, a small multifunction display in the dash, two USB ports, a six-speaker audio system, and surprisingly, steering-wheel mounted controls.

There’s no keyless entry or push-start ignition, and this level of equipment makes you feel lucky to have automatic headlights. Sadly, the S manual also misses out on the basic luxury of cruise control.

It’s cheap, missing a lot of gear, and feels it with an abundance of plastic trims, but somehow this car gets by with almost everything you really, truly need. Sure, it’s a bit of a hark back to the equipment lists of the early 2000s, but if you’re just looking for a basic car to get the job done, you could do far worse than this Kia with its impressive multimedia offering.

When you think about it, shoehorning a big torquey engine in a light and agile small car is a recipe for fun. Ford did just that with the Escort RS2000 in the 1970s… and Mazda’s now an expert at it, too.

The engine in question is the G25, a 2.5-litre four-cylinder naturally aspirated twin-cam petrol engine, delivering 139kW of power at 6000rpm and 252Nm of torque at 4000rpm.

As this Evolve SP Vision hatch tips the scales at 1415kg, it makes for a healthy, and consequently very lively, power-to-weight ratio of over 98kW/tonne.

That’s if you decide to use all the available revs, which the six-speed torque-converter auto makes great use of.

Driving the front wheels, it offers a 'Sport' mode to extend the revs even more, which is keeping in line with this Mazda’s sporty character.

Less so is the company’s decision to ditch the old multi-link independent rear suspension system a few years back for a more prosaic torsion beam arrangement. We’ll get to how that affects ride and handling in a moment.

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.

Mazda claims the G25 averages 6.6L/100km on the combined cycle… for a carbon-dioxide emissions rating of 154g/km. On a 51L tank, that gives a potential distance of over 940km!

Driven good and hard in our hands, we managed 7.5L/100km, which isn’t bad given the speed and conditions it was subjected to.

Plus, the Mazda’s happy on 91 RON 'standard' unleaded petrol.

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.

Ask yourself. What do you want from a new small car?

Since the first Familia of the early 1960s, Mazda’s been at it constantly, through the 1300 and 323 eras and into the modern age of the 3.

The Hiroshima brand knows its stuff. Space, practicality, comfort, ease, reliability and affordability. But a small car has to offer more, specifically in the way it makes the owner feel.

That’s why, while the Focuses, Lancers, Astras and Pulsars are gone, the 3’s still here. And it isn’t just the lush visuals inside and out that are, well, sensory-rich.

As older Alfa Romeo owners know, there’s something special about an engine that sounds alive, and the moment you push the 3’s starter, it purrs into life. That’s the first clue.

Slot the refreshingly old-school lever into Drive, and the G25 leaps into action, and, if you need it to, will keep pulling forward strongly, engine buzzing, like it’s on a mission.

That describes the torquey urge of this big 2.5L four, paired perfectly with the sensibly-geared auto.

We miss Mazda’s magnificent manual immensely, but the 3’s instant response reflects its favourable circa-100kW/tonne power-to-weight ratio.

And, as we’ve harped on in the past, the twin-cam unit’s extra oomph beyond 4000rpm delivers muscular high-speed responses akin to a good turbo – or a great old-school Alfa. You can keep your laggy dual-clutch transmissions, Europe.

Now, sweet, smooth and speedy performance is one thing, but having the chassis tuned with precise and fluid steering for tactile handling, and confident roadholding, backed by nuanced driver-assist and traction controls, are another.

There is a consistent and unifying control to the 3’s linear and forgiving dynamics, reminiscent of past masters like the Focus (and today’s brilliant Peugeot 308) that makes it a joy to drive enthusiastically through fast corners, with the knowledge that it won’t suddenly snap-oversteer and bite an unalert driver back.

For a Mazda, the ride is quiet enough, but there is still some droning transmitted through the cabin, via the Bridgestone Turanza (215/45) tyres, on coarse-chip bitumen surfaces.

And while suspension comfort is pretty impressive for the most part, larger bumps reveal the torsion beam’s limitations, as the car can occasionally thud over them in a way that we remember the multi-link rear end wouldn’t.

Anyway, what we’re saying is that, overall, the 3 Evolve SP Vision is an immersive and interactive driving experience that is right up there with the best of them.

Brawny performance, exquisite agility and a refinement that, collectively, have eluded every small Mazda in living memory until this generation’s 2019 debut. This 3’s right on the money. Still.

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.

Sadly, the Rio S misses out on any advanced active safety items. This is one area where city-sized cars are struggling to keep up, as expensive active safety systems tend to push them well into the mid-$20,000 region.

Unlike the mid-range Rio Sport, the S has no auto emergency braking, lane keep assist, or driver attention alert.

It makes do with the more basic array of brake, stability and traction controls, with the addition of a great reversing camera, three top-tether and two ISOFIX child seat mounting points, and six airbags.

The Rio carries a valid five-star ANCAP safety rating, to an earlier 2017 standard before its missing modern active safety items were mandated.

Mazda offers a five-year/unlimited kilometre warranty, with five-years roadside assistance… and that’s nothing special nowadays.

Service intervals are at 12 months or every 15,000km.

A fixed-price service scheme is available, averaging out to $434 annually over the first five years. Mazda shows pricing right up to 16 years and 240,000km on its website.

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.