Kia Ev4 vs Rivian R1S

What's the difference?

An electric sedan is really shrinking the buyer pool, which is why Kia has such gentle expectations for the EV4 in Australia. But it's a lovely driving EV with plenty of perks, and the design alone will brighten up Australia's roadways. For my money, I'd either be going for the cheapest one that's sharp value with plenty of kit, or the flagship GT-Line that gets the big battery and the works in terms of equipment. The Earth for me sits in no-man's land.

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and 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 of automotive brands among its clients. When producing content for CarsGuide, he does so in accordance with the CarsGuide Editorial Guidelines and Code of Ethics, and the views and opinions expressed in this article are solely those of the author.

While there are some obvious signs that the R1S is Rivian’s first mass-market vehicle, the good news for the company is that its problems are not impossible to overcome. The suspension needs retuning to improve the ride quality and the multimedia system’s software needs upgrading. But even with those issues the R1S left a positive impression.

This is a very stylish SUV with great space and excellent performance, that also happens to be electric, rather than relying on being electric as its primary selling point.

Rivian has put more effort into the design and finishes than many of its EV rivals and the result is a vehicle that can genuinely compete with the established premium players with more credibility.

The only catch is there’s no clear timeframe for when, or even if, this generation of R1S will make it to Australia. The brand has repeatedly spoken of its hopes of entering the market here without locking anything in, but given the current state of the EV sales it may pay off to wait until the conditions are right for a new, premium player to try its luck here.

The slippery-looking unit that adorns this page is the EV4 sedan. There’s also a hatch, but it comes out of Europe, while this one comes out of Korea, and that would likely make the hatch far more expensive than this bad boy. It's under study, apparently, but yet to be confirmed.

Anyway, to steal a hackneyed football analogy, for mine this is a game of two halves. I actually really like the front end. It looks sleek and slippery and there’s a real presence from the swollen arches.

I am, however, a little less sold on this rear end, which looks sharp and blocky and almost like it has been bolted on. Also annoying is the fact that it looks like it should be a liftback, with the boot hinged up above the rear windscreen. But nope, it's hinged below it, so you still get a dinky little opening to squeeze your stuff through.

Kia's international designers are pushing the boat out at the moment, and they deserve credit for making things different. Whether it sinks or swims with the general public, though, will be the real test.

Inside, it's all pretty traditional Kia, with all three models sharing the twin 12.3-inch digital displays, along with the little climate panel in the middle. Kudos to Kia for keeping some physical buttons, too. I'm less sold on the use of some cheap, hard plastics, even in the top-spec cars.

Design is another area where Rivian has carved out a unique position for itself. Whereas other brands, including Tesla, have focused on simplicity and aerodynamic efficiency, Rivian has given the R1T a unique style that looks interesting, different and most definitely not plain.

The oval daytime running lights make every R1S and R1T stand out from a mile away, even on LA’s busy freeways. The overall design is high quality and manages to strike a good balance between aesthetics, aerodynamics and practicality - even if it doesn’t suit everyone’s personal taste.

The cabin is worth highlighting in particular, because rather than go for the ‘minimalist’ look that so many brands are going for these days, with as little switchgear and different trims as possible to keep costs down, Rivian has opted for something more complex and, frankly, more impressive.

There’s a level of craftsmanship, a great mixture of premium materials (including some striking light wood options) that make the R1S feel like a stylish and relaxed environment inside the cabin. Our particular example had a great mixture of colours, textures and patterns that really elevated the cabin experience.

The technology is also nicely integrated into the design, rather than being the focal point, like so many other modern electric vehicles. It still offers the same level of technology - a pair of screens - but doesn’t rely on them to carry the design of the interior.

At 4730mm long, 1860mm wide and 1480mm tall, the EV4 sits between the Model 3 and the Seal in terms of its outright dimensions. Kia says the EV4's wheelbase and interior packaging has been designed to maximise backseat space, which I must admit, there is plenty of.

Sitting behind my own 175cm driving position, I had miles and miles of leg room, and enough head room, though there is some kind of optical illusion that occurs in the backseat of the EV4 – even though you definitely have enough space, the dark materials of the GT-Line still leaving me feeling a little claustrophobic somehow.

Something else not to be sneezed at is the inclusion of the household-style power plug in the back. My laptop died while I was taking notes on my test, and I plugged it straight in and powered it up. Super handy.

At the back, there is 490 litres of boot space, which is about middle ground. The Seal is more like 400 litres, but the Model 3 offers more.

Sadly the EV4 is yet another EV that does not have a spare wheel of any kind. Instead you have to make do with a tyre repair kit.

The R1S comes standard as a seven-seat SUV, split across three rows (two in the first row, three in the second row and two in the third row). Space across the three rows is fairly typical for an SUV of this size, which is to say generous up front, good in the second row and a little bit tight in the back.

What is good though, is the length of the cabin allows for quite a spacious boot even with the third row in use, which is definitely not something all seven-seat SUVs can claim. Using a direct conversion from Rivian’s specifications that list cargo capacity in cubic feet, the R1S has a claimed 498 litres with the third row in use and up to 1331L with the third row folded down. There’s also 314L under the bonnet and another 144L underneath the boot floor (although that comes at the expense of a spare tyre).

As mentioned in design, Rivian has nicely integrated the technology into the cabin, with the 12.3-inch digital driver display and 15.6-inch central multimedia touchscreen feeling like a natural part of the car rather than a centrepiece. Rivian has also managed to incorporate eight USB-C charging ports spread around the cabin to keep everyone’s devices charged up.

However, while the technology is nice from an aesthetic design perspective, the same cannot be said about its useability. Like Tesla, Rivian has opted to go it alone with its multimedia system and has developed its own Google-based software that is not compatible with either Android Auto or Apple CarPlay. That would be acceptable, although still disappointing, if the system worked as well as Tesla’s, however the Rivian system is very slow. It repeatedly took several seconds to load between the various functions, which may not sound like long, but when you’re trying to get back to the navigation so you don’t miss your freeway exit a few seconds can make a big difference.

But, honestly, in this day-and-age, systems like this should work quickly and seamlessly, so it’s an area Rivian needs to improve.

On a positive note, Rivian does have some cool accessories for the R1S including what it calls a ‘Camp Speaker’ which is a US$400 option that it integrates into the sound system but is also removable, so you can pull it out of the centre console and listen to your music if you’re around the campfire or having a picnic.

When we drove the R1T in 2023 Rivian was still in the ramp up stage of production and was limited with what it could offer customers. Fast forward to 2025 and the brand now has both the R1T and R1S available with dual or tri motor powertrains, with a quad-motor powertrain expected by the end of the year.

The R1S Dual Standard begins the range at US$75,900 (approx. A$118,000), the R1S Dual steps it up to US$83,900 (A$130k) and the R1S Tri-motor completes the current line-up at US$105,900 (A$165k). While those prices are definitely in the premium end of the market the R1S is actually cheaper than the Tesla Model X, which is still on sale in the US market, and starts at US$86,630 (A$135k) and stretches to US$101,630 (A$158k).

For more context, the Audi Q8 e-tron starts at US$74,800, the BMW iX from US$87,250 and the Mercedes-Benz EQE from US$77,900.

Standard equipment across the range includes the 12.3-inch digital instrument display, 15.6-inch multimedia touchscreen, dual-zone climate control, heated and ventilated front seats, heated steering wheel, eight-way power adjustable driver and passenger seat and panoramic glass roof, so it certainly has premium levels of equipment.

We drove the range-topping RS1 Tri-motor which, aside from an extra motor, gets standard 22-inch alloy wheels, a dynamic glass roof, a soft-touch suede textile headliner as well as unique colour and trim options.

All EV4 models are front-wheel drive, with a single front-mounted motor producing 150kW and 283Nm, fed through a single-speed gearbox. That’s enough, Kia says, to knock off the sprint to 100km/h in around 7.5 seconds. The Air is the fastest, at 7.4s, while the heavier Earth and GT-Line claim 7.8s. Top speed is a claimed 170km/h.

As mentioned earlier, there are currently three versions of the R1S available, each with a different powertrain. 

The Dual Standard AWD has, unsurprisingly, dual motors (one at the front and one at the rear) which make a combined 397kW/827Nm. That’s enough for it to launch 0-60mph (0-96km/h) in just 4.5 seconds. The R1S Dual AWD has the same power, torque and acceleration figures, however it gets Rivian’s Large battery, which we’ll detail below.

The Tri-Motor AWD obviously has three motors, one on the front axle and two on the rear, which naturally provide more power, 633kW/1495Nm. With so much power and torque the Tri-motor is wickedly fast, taking just 2.9 seconds to launch 0-60mph.

If, for some reason, the Tri-Motor isn’t fast enough for you, Rivian has released the details on the Quad-Motor. It will have two motors on each axle providing a staggering 764kW (that’s 1025-horsepower!) and 1624Nm, enough to rocket it from 0-60mph in just 2.6 seconds and across the quarter mile in 10.5 seconds.

Let’s talk about range for a moment, because it's bloody impressive. Not quite the best out there, but the furthest any electric Kia has ever travelled between charges.

There are two battery options, a 58.3kWh NCM battery in the Standard Range, and a 81.4kWh unit in Long Range models. The Standard will deliver 456kms in driving range, but the Long Range ups that to 612kms, both on the WLTP cycle. 

The EV4’s 400-volt architecture does slow down charging a little, though, with DC fast charging capped at 128kW. That means going from 10 to 80 per cent in around 30 mins when using the fastest chargers. If you’re using a 50kW charger, it’s up to almost an hour and 20 minutes for the bigger battery, which is a long coffee stop.

Plugged in at home, provided you have an 11kW wallbox, it’ll take just under five and a half hours, or just over seven hours, to go from 10 per cent to fully charged, so an overnight charge no matter the battery size.

Rivian offers three different battery types across the three variants, each with a different driving range. The R1S with the Standard battery (92.5kWh) has a claimed 434km driving range, the R1S Dual with Large battery (109.4kWh) extends that to 530km, while the Tri-Motor comes standard with the Max battery (141.5kWh) that has an impressive 597km of range.

It is worth noting, though, that those range claims are based on US EPA estimates, rather than either the WLTP or NEDC methods usually used.

Charging times vary depending on the type of charger used, in the US Tesla has given access to its network to other EV brands and the Rivian is available with a plug adaptor to use a Tesla charger. The R1S is capable of charging up to 220kW, which means it takes approximately 40 minutes to take the battery from 10 to 80 per cent. 

I learned something new and exciting (well, to me, at least. You might be very bored) from Kia's ride and handling guru on this launch. And that is that the tuning frequency for common city road imperfections, like bridge expanders, is actually the same as for the bigger, bouncier undulations you get on country roads. And so you can tune to prioritise one or the other, not both.

In real terms, it means a car that feels custom-built for the city, gliding over urban roads with mega comfort (which is exactly what the EV4 does), feels slightly less at home out of town, where there is more obvious movement in the cabin.

Bored yet? Ok, the point is that, while never uncomfortable, the EV4 feels right at home in the city, which is where it's expected to spend most of its time, but weirdly firmer on longer adventures. 

This really is easy, city EV motoring, done well. There's no alienating floatiness to the ride, no lifeless lightness to the steering, it's comfortable, quiet and – despite no headline-grabbing power figures – more than potent enough to get you up and moving.

There's nice weight to the steering, and though the front tyres gave up their grip a couple of times when pushed with some steering lock on, there isn't much in the way of aggressive body roll, and it all feels pretty confidence inspiring. 

The power is most effective from around 10km/h to 80km/h, before the urgency starts to fall away – it's slower to respond at freeway speeds – but that too just leans into its city credentials.

There's really not much to complain about here. It feels well sorted, and quite fun to drive. There is nothing that really stands out as spectacular about the drive experience, but nor is there anything to complain about. It's just really solid motoring, which isn't always guaranteed these days.

The R1S and R1T are Rivian’s first mass-produced cars, and it shows. It’s not all bad news by any stretch, but there are some major issues the brand will need to address in the future if it wants to succeed globally (or even just in the US). 

The biggest issue is the ride, which just doesn’t feel as well resolved as the more established brands that have been designing, developing and building cars for decades. The R1S isn’t bad to drive by any stretch, but the ride is too firm at times and it also lacks control and feels too soft at others. 

All R1S grades come standard with Air Suspension that has multiple levels of firmness and can adjust the ride height. However, in the ‘normal’ setting the ride feels too busy, with the heavy (3096kg) SUV skittering over the imperfections in the road rather than absorbing them. The problem is, if you adjust the suspension to the softer setting it lacks control and has a tendency to bounce over bigger bumps and take a few seconds to settle. This was particularly noticeable on LA’s concrete freeways, but it would be an issue on any road with undulations or joints.

But while the ride needs improvement, the R1S has strengths in other areas - namely performance. The Tri-motor AWD we sampled had immense punch from its three motors and it certainly felt like 633kW and 1495Nm was on tap. We didn’t test its acceleration claim officially, but any take-off could be made into a rapid one with just a squeeze of the accelerator pedal. 

The R1S is also capable of towing up to 3500kg, so it’s a strong and capable SUV too, rather than just a speedy EV.

Another strength is the regenerative braking system. There are multiple settings but we found the lowest regen was the best option, as it still provides powerful regen but is more progressive than the more powerful modes.

The R1S comes loaded with safety equipment across the range, including eight airbags, adaptive cruise control, autonomous emergency braking, blind spot monitoring, forward collision warning, lane departure warning, lane keeping assist and rear cross-traffic alert.

It also comes with what’s called the ‘Rivian Autonomy Platform’ that includes 11 cameras and 12 ultrasonic sensors for mild-autonomous functionality in specific circumstances, such as freeway driving or on well-marked roads. 

Kia ownership proposition is simple, and pretty strong. You get a seven-year warranty no matter how far you travel, an eight-year warranty for the high-voltage systems, again no matter how far you travel, and capped-price servicing. Pre-paying your service costs will set you back $688 for three years, just over $1300 for five years, or just under $2000 for seven years.

Rivian offers a four-year/80,000km warranty for the R1S vehicle as a whole, as well as a separate battery pack and drivetrain specifically. The Standard battery is covered for eight years/190,000km while the Large and Max batteries are covered for eight years/240,000km.

As for servicing, Rivian uses an app-based system, which allows owners to schedule a service at any time via the app and then either have a Rivian technician come to your home for a small service or drop it off at a service centre if it’s a bigger job. The app is also connected to the car, so if the car’s own diagnostic system recognises a problem, it can prompt you to book a service proactively.