2023 Kia EV6 vs 2018 Kia Optima

What's the difference?

A hundred thousand dollars used to be big money. And for a family SUV, it still is. But don’t make the mistake of confusing the Kia badge with pedestrian motoring. The EV6 GT is proof that Kia can make high performance cars that work, and make the most of modern EV tech in the process.

We’re a bit disappointed in the real-world range of the car, and there’s no doubt the vast majority of drivers neither need nor want a car as focussed as this one. But as an example of how a modern, digital electric car can feel more like an old-school analogue performance car, the GT is Exhibit A. And for those of us for whom it’s about the journey, not the destination, this is indeed good news as EVs continue to take over the world.

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

If you travel long distances, want a good amount of space and don’t want to pay big bucks for a new car, then yeah, maybe there is a reason sedans like this will hang around for a while longer.

Sure, the appeal of sedans mightn’t be as strong as it once was, but models like the Kia Optima prove they still have a reason to exist.

Perhaps the most poignant element of the GT’s design is that Kia has lavished lots of Australian input into the final product.

Like Kias before it, the EV6 GT benefits from plenty of Nth-degree local suspension tuning which, given the way some imports buck and crash on Aussie roads, is commendable and clever.

It’s also interesting that Kia has remained committed to this approach, especially since the new GT features the brand’s 'Electronically Controlled Suspension' (ECS) the first for an all-electric Kia.

By looking at real-time road speed, cornering forces, braking and acceleration forces and the actual road surface, the ECS can tailor the dampers’ behaviour to maximise dynamics, grip and ride quality. For some carmakers that would be enough, so full marks to Kia for taking the next step with local calibration input.

Perhaps the other design element of note is the fact that Kia sees the GT as not just a high performance family car, but also a vehicle that it is happy to describe as 'track worthy'.

And even with the straight-line speed involved, that’s a big statement for any car weighing north of 2.1 tonnes. Testing at the infamous Nurburgring in German underlines Kia’s determination to give the GT the smarts to handle a track day.

The use of high-performance Michelin tyres backs this up when a conventional EV tyre would improve range but at the expense of grip in corners.

To further underline how serious Kia is about that claim, the GT features a completely different steering set-up to lesser EV6 models.

The GT gets a variable ratio steering rack with a faster ratio than the other EV6s and variable levels of power assistance to improve feel. There’s even additional bracing on the GT to stiffen the body and make full use of that sportiness.

Another big part of any track-day car revolves around the braking system, and to that end Kia has fitted the GT with huge brakes.

The knock-on effect, of course, has been the requirement to fit 21-inch wheels for rotor clearance as well as a new front suspension system that features a double ball-joint design to complete the clearance for the 380mm front discs. Four-piston front calipers are also part of the GT braking package, identifiable by the bright green hardware.

In specific detail terms, other design standouts include the sequential LED indicators, flush-folding door handles, solar glass, intelligent headlight system and 64-colour ambient interior lighting.

If there’s a design disappointment it’s that the GT looks pretty much like any other EV6.

Yes, the 21-inch wheels and tyres are pretty easy to spot, but from the front, only a slightly different grille, lower bumper and matrix headlights give the game away.

That doesn’t make it an unattractive car (by any means) but it doesn’t automatically mean onlookers will know you’ve spent the extra gold for the extra performance.

And over in the Swing-and-a-Miss column is the synthetic soundtrack Kia has chosen for the GT. There are three different, selectable background noises linked to motor speed, but, to us, they simply sound like three different stages of wheel-bearing failure.

Cosmetic changes for the facelifted 2018 Kia Optima include new headlights and tail-lights with revised LED signatures (but still halogen lamps in the base model), and there are newly sculpted bumpers and new wheel designs across the two-model range. 

We had the base model Si, which doesn’t look as good as the GT model, because it has smaller wheels, the sporty body kit and misses out on the LED headlights, but the LED daytime running lights are still present.

The GT has a more aggressive look, and the side skirts, front spoiler and rear diffuser fit it better - there are dual exhausts, but not sporty quad exhaust tips.

In fact, this model is a bit like the old-man version of the Optima. No offence intended to old men, of course. The GT is just heaps sportier, and I reckon it’s considerably more attractive as a result. 

Still, the inherent sleek styling of the Optima remains - the chrome highlighting along the window line is a bit too sheeny for me, but the angles and stance of this model are quite gracious. I really dig the fact the top of the windscreen mirrors the ‘Tiger Nose’ grille shape.

I'm no exterior designer, but I liked the existing Optima more - it just looked a bit neater, even though it had a decent amount of bling with its Mercedes-like diamond-pattern grille, as opposed to the cheese grater look seen here.

There’s not quite as much bling inside the cabin of the Si, either, but it is still a well-designed space - just not as special as the premium package offering of the GT (which gets leather trim - not nappa leather, but still a quality cowhide finish, and more). Check out our interior photos to see if you agree - but size and interior dimensions of the Optima are hard to argue against.

Perhaps the biggest practicality hurdle is the car’s range. At an optimum 424km, it’s okay but not stellar. And if those kilometres are highway ones, you can forget about 424km; it’ll be a fair bit less than that.

Meantime, the long wheelbase of the basic EV6 platform means there’s lots of legroom in the rear, making the car a comfy four-seater (the rear-centre seating position is decidedly last place) with enough knee space for adults in the rear.

The cabin is dotted with USB and charging points and there’s wireless charging in the double-layer centre console. There’s a also a bottle-holder in each door, map pockets in the front seat-backs, a luggage net and retractable cargo cover.

Kia’s insistence that the GT be capable of track-day work means the headrests on the front seats allow for a helmet to be worn, while the lack of power adjustment for the front seats mean they can be mounted closer to the floor.

Even so, the sunroof gobbles up precious headroom, and the cabin is a bit tight in that direction even without a helmet.

The digital dash and head-up display is clear and legible and the menu system contained within the touchscreen has a positive action and is logically laid out. Only the gear selector makes us wonder with its dim indicator lights that are hard to discern in some ambient light conditions.

The silver steering wheel buttons are also a bit hard to fathom when light reflects off them. The starter button is also not where you instinctively look for it.

I really like the way Kia designs its cabins. Sure, there’s a lot of black in here, but there’s also a lot of thought put into the usability of the space.  

The high-mounted 7.0-inch infotainment and multimedia touch screen in the Si is simple to use, and for 2018 the Optima range gets Apple CarPlay and Android Auto - you couldn’t get that in the Optima up to this point. 

Also included are a reversing camera, USB input, Bluetooth phone and audio streaming and six speakers. The Si model misses out on sat nav - you’ll have to use the maps app on your phone. No DVD player either.

Storage is well thought out in here, with big bottle holders in the doors, a good sized pair of cup holders up front, and a nice little storage bin for your phone, wallet, keys and so on.

There’s a driver info screen with a digital speedo, and even on this base model you get a dual-zone climate control air conditioner. The updated Optima gets a new steering wheel, too.

Now, what about the back seat?

It may be considered a ‘mid-sized’ sedan, but there’s limo-like space. With the driver’s seat in my position (I’m about six feet tall) there was still heaps of rear legroom in the rear seat, with ample knee room, good foot room and decent shoulder space, too - three of me could slot across the back bench comfortably, which means kids will fit easily, too. There are three top-tether points and two ISOFIX points as well.

Kids and adults alike will be happy with the rear air vents back here, and there’s a flip down armrest with cupholders, too. Again, big bottle holders appear in the doors, and there are map pockets in the back seats.

What about boot space? With so many people choosing SUVs over sedans because they’re theoretically more practical, the Optima offers good food for thought - it has enough luggage capacity for a bunch of suitcases (510 litres VDA in size) and there’s a full-size alloy spare under the boot floor. If you need more, you could always invest in a roof rack setup?

Kia dropped prices for this updated and facelifted model range - and not by a small amount, either. So, what's the price? How much does it cost?

The Si model is the entry-grade of two models, and it comes in at the bottom of the price list at $33,290 plus on-road costs (rrp) - an $1100 drop over the previous version. The Si, then, is a value-focused sedan that you might consider if you’ve looked at a Toyota Camry Ascent, Hyundai Sonata Active, Mazda6 Sport or Subaru Liberty 2.5i.

The standard equipment list is pretty good - although there have been some deletions, because the price is down $1100. The rather good HID headlamps with washers have been dumped in favour of halogen projector lights (yeah, not even xenons), and the satellite navigation system (GPS) is gone.

But now the 7.0-inch media screen is capable of doing the Apple CarPlay iPhone connectivity and Android Auto phone mirroring thing, and that’ll serve most people’s purposes pretty well, but there is no digital DAB radio, and no CD player for the sound system. Other standard kit includes a digital driver info display with digital speedo, dual-zone climate control, cloth seat trim, auto-dimming rear-view mirror, a reversing camera, front and rear parking sensors, auto headlights and rain sensing wipers, and 17-inch alloy wheels (with a full-size spare). 

New equipment for the Si includes driver-fatigue monitoring and an active lane-keeping assistance system (in place of the old lane-departure-warning buzzer). 

If you want all the fruit you really need to fork out the extra cash for the GT, which lists at $43,290 plus on-roads (vs $33,290 for the Si). That is getting perilously close to Kia Stinger territory… but let's not get too far ahead of ourselves - this isn't a model comparison!

You get a fair bit more for your dough, but even the GT has seen a few deletions to help justify its $1200 price drop compared to the pre-facelift model, such as the front passenger seat being manually operated (previously electric), the cooling/ventilation of the front seats has been deleted, and the panoramic sunroof of the previous model is gone, too. And while it rides on 18-inch rims with a new design, the tyre-pressure-monitoring system has been removed.

It uses a new 8.0-inch media screen with extended smartphone connectivity and in-built sat nav (with 10 years of maps included and SUNA live traffic updates), and it also gains redesigned LED headlights but they lose the smart auto high-beam assistance of the old model. The tech doesn't go as far as to include Homelink garage door opening here in Australia, either.

Other standard kit in the GT includes leather seats, electric driver’s seat adjustment with memory settings, smart key (keyless entry) and push button start, a sports body kit, a harman/kardon audio system with 10 speakers and a subwoofer, wireless phone charging (Qi) but no Wi-Fi hotspot, rear sunshades (but no tinted windows), different interior trim finishes, a heated steering wheel, and a colour driver-information screen. 

The GT also gets the new lane assist system and driver-fatigue monitor, and the entire safety approach has been improved across the range. See the safety section below for more detail. 

There is no launch edition, nor is there a sports edition, but there is a decent array of colours (or colors, depending on where you're reading this) available - black, white, blue, red, grey and silver can be chosen, but not brown, purple or gold... if you wanted those. 

Accessories available across both trim levels include tailored floor mats, a dash mat and weathershields, among other items. 

A purely electric car, the EV6 GT is all-wheel-drive courtesy of having one electric motor across the front axle, and a second motor driving the rear wheels.

Add it all up and at maximum power, you have 430kW/740Nm at your disposal.

It’s worth remembering those numbers are precisely the same power and torque as that produced by the last of the locally made muscle-cars, HSV’s final, 6.2-litre, supercharged V8 F-Series line-up back in 2015.

Compared with the non-GT versions of the EV6, that output is almost double the 239kW of the EV6 AWD Dual Motor.

There’s no multi-ratio transmission (just a single-speed arrangement) but there is an electronically operated rear differential to make the most of the 270kW contributed by the rear electric motor.

There’s also a Drift mode built into the car which, as well as courting controversy from the authorities, manages to shift 100 per cent of torque to the rear wheels at small steering inputs to allow the car to be driven sideways.

As the car exits the turn in question, some torque is shuffled forwards to the front wheels to pull the vehicle straight.

A set of paddle shifters control not the gearbox ratios (there are none) but instead the rate of regeneration on deceleration, and turned up to its maximum, can make the Kia a one-pedal car once you get the hang of it.

The GT also features drive models, which tailor the car’s behaviour in terms of steering feel and aggressiveness, suspension firmness, throttle sensitivity and even the stability control’s intervention threshold.

There’s also a steering-wheel mounted GT button which ramps all those settings up to DEFCON 3, placing them at their most dynamic calibrations in the interests of an exciting drive.

In fact, the GT button is the only way to get the full 430kW of power, too.

In the other drive modes, the spare Kilowatts are stored away for you, just waiting for that GT button to be pressed.

The Si model is powered by a 2.4-litre four-cylinder petrol engine, which has seen no changes to its specifications for this mid-life update.

Engine specs remain at 138kW of power at 6000rpm, while torque is rated at 241Nm at 4000rpm. It makes use of a six-speed automatic transmission only - there’s no manual transmission here, but you do get paddle shifters - and it's front wheel drive (the Optima isn't available with AWD, or as a 4x4, or in rear wheel drive - the latter is left to its bigger brother, the Stinger).

The GT gets a zestier drivetrain with more horsepower - it has a 2.0-litre turbo four-cylinder engine with 180kW/350Nm, which is much more desirable, but also louder than the Si’s 2.4. It also has a six-speed auto transmission, and is FWD. If you're into ratings and statistics, that 2.0-litre with a turbocharger is one of the perkier offerings for its engine size in the class.

There is no hybrid model available, despite a plug in hybrid petrol version (allowing you to run in EV mode) being sold in European markets. No diesel here, either, while other markets get a 1.7-litre turbo diesel. No LPG model here, or anywhere else, for that matter.

Towing capacity for Optima models is 750kg unbraked and 1700kg braked for the 2.4-litre, and 700kg/1400kg for the 2.0-litre turbo. Tow bar down-weight is capped at 80kg.

If you're concerned about engine problems, suspension problems, clutch and transmission issues, be sure to check out our Kia Optima problems page.

Like the other electric Kias on sale now, the EV6 GT has a Lithium-ion battery with a capacity of 77.4 kWh. Located under the floor, the battery-pack accounts for no less than 479 of the GT’s 2185kg.

The on-board charger can handle 10.5kW and takes about seven-and-half hours to go from 10 per cent to 100 per cent charge.

Using a 50kW fast charger, you’re looking at 73 minutes to go from 10 to 80 per cent charge and if you can find a 350kW fast charger, that time drops to just 18 minutes.

On a full charge, Kia claims a combined range of 424km which is okay, but not exactly stellar. That range will also fall pretty quickly if you start to use the awesome stomp on offer.

And let’s not forget that, in running-cost terms, the GT is front-loaded. That is, the car itself costs more, but it’ll be cheaper to run over the years.

Meantime, as oil-based fuels cost more and renewable electricity becomes more prevalent, the financial and environmental running cost of an EV starts to fall.

Okay, so the jury is still out in terms of the environmental impacts of a 77-plus kWh battery, and if the power you’re using is not the green variety, things change again. It’s a moving target, to be sure.

Either way, Kia claims energy consumption of 20.6kWh per 100km which is higher than many EV rivals but reflects the dual motors and even elements like the 21-inch performance tyres (Pirelli Pilot Sports) rather than the lower-resistance EV-specific tyres of most others.

The GT is also a bit of a hero when it comes to regeneration during braking. The car is capable of producing 0.6G from regeneration alone, and as much as 320kWh of regenerated energy during full braking.

Kia claims a very realistic fuel economy rating of 8.3 litres per 100 kilometres for the Si model, and we saw damn close to that consumption during our week of testing. On the highway it will sit at around 6.5L/100km, ensuring good mileage, while city driving will push usage above 12.0L/100km. Our overall average was 8.5L/100km, which is good. Use the eco mode, and you'll get a little better use.

The turbocharged GT model uses a little more, according to Kia’s 8.5L/100km combined average claim, but we guarantee you’ll actually use more than that because it’s more eager to please.

Fuel tank capacity is 70 litres - plenty of size for long distance drives.

Let’s cut to the – literal – chase: Acceleration. Any car with a nought to 100km/h time of 3.5 seconds is a serious performer, but even then, the first time you launch the GT, the sheer ferocity of the car’s response will surprise you.

It’s more like being shot out of a cannon than leaving the start-line, thanks to that instant torque, but the Kia also does it incredibly easily and fuss-free.

Where a lot of truly powerful cars struggle with grip, scrabbling and fighting against the traction control as they battle to get moving, the Kia simply takes off for the horizon.

There’s little squat, no loss of grip and just a seamless supply of Newton-metres. Your grandmother could launch this car as hard and fast as Lewis Hamilton could.

But where a lot of electric cars offer similar levels of traction and acceleration, the EV6 GT adds a whole new dimension.

Where much of the competition becomes a victim of its own kerb mass and the weight shift that comes with it, the Kia is an altogether more dynamic contraption, putting to the sword the theory that EVs are for straight-line stuff only.

The big, sticky Michelin tyres and the beautifully considered damper calibrations (the local experts’ work) combined with the quick steering rack and better-than-average steering feel and feedback, means the GT can not only be driven quickly around corners, it can also maintain its composure (and pace) even on a patchy, lumpy surface.

Where its velocity and steering angle suggests it should start sliding, it doesn’t. Where a corner-exit bump and lots of throttle would make other cars lift a front wheel, the Kia almost senses the road before it and tailors its damper responses.

In fact, that ability to predict the road surface is closer to reality than you might think. While the GT’s adjustable suspension remains passive (or reactive) rather than truly active (seeing into the future) the algorithms that control the dampers are smart enough to look at steering angle, speed, throttle position as well as examine the road surface in ultra-quick real time and adopt a posture that irons out the worst and keeps the wheels on the road.

Talking to the engineers who achieved this feat reveals a lot about what goes into making a two-tonne, high-horsepower car behave itself. As in, hundreds of passes over the same piece of road with full instrumentation on board and the brain power to interpret that data.

But if a car with so much roll stiffness can also offer the ride composure that this one does on 21-inch tyres, then those hundreds of passes have been well worth the effort.

As per Kia’s claim of track-readiness, we also got the chance to drive the EV6 GT at the tight, twisting, narrow Haunted Hills hillclimb circuit in Victoria’s Gippsland.

Frankly, the Kia simply has too much power for this track and we reckon it’s better left in Sport rather than GT mode where the power is a little softer and the car is not as fervent in chasing torque from the front axle to the rear and back again to dial out sliding.

It would be a different matter on a faster, flowing circuit like Phillip Island, but at Haunted Hills, driving the GT was a bit like trying to land a four metre shark in a three metre tinny.

Either way, however, the car’s on-road encouragement and dynamic poise is enough to convince us that this is one of the first EVs to actually speaks the same language as the enthusiast driver. And you can pretty much thank the Aussie suspension engineers for that.

The Optima has some really good elements to the way it drives, but sadly  some less impressive bits as well.

Let’s start with the not-so-great stuff - the 2.4-litre engine in this Si model just isn’t as enjoyable as the turbo unit, and the fact that Kia still doesn’t offer a hybrid version here, despite doing so elsewhere, is a bit of a downer.

The drivetrain isn’t terrible - the six-speed auto is smart enough, and there’s usable power if you boot it. The two more sedate drive modes, 'Eco' and 'Comfort', mean the transmission will aim to save fuel and limit throttle response, with a bit more of a lazy feel to the drive experience. But in 'Sport' mode it is definitely more rewarding in terms of acceleration and performance, offering a bit more pep and urgency (we didn't do a 0-100 km/h speed test, but take our word for it); it undoubtedly at the cost of fuel consumption.

It’s just a bit of a shame Kia doesn’t offer the turbo in this spec, too. Fuel use for the Si model is better than the turbo, however, so it could be ideal for buyers who are more worried about the bottom line than design and a sportier drive.

The thing I like most about the Optima is its road manners - the steering and suspension have been tuned for local conditions, just like all Kia products, and it shows. 

The electric power steering is really well sorted, making for easy parking moves and good assuredness at higher speeds. And the turning circle is decent, too - 10.9m (so, the turning radius is 5.45m). 

Plus the ride comfort is really good. On the highway it coasts along with very little fuss, and around town it deals with lumps and bumps impressively. Sharp edges can upset things a tad, and mid-corner bumps can make it jitterbug a little bit, but not to a degree that would rule it out of contention if you want a mid-sized sedan.

It’s pretty quiet on the open road, too, and the adaptive cruise control makes long-distance driving a simple task. The GT does suffer a little bit more road noise, though.

The safety rating of the Optima remains at five stars, as it was when the car was tested in this generation in 2015.

The updated Optima carries over the safety features of the previous model including autonomous emergency braking and adaptive cruise control, while the lane-departure warning system is now supplemented with lane-keeping assistance, and there’s driver-fatigue monitoring added, too. There is no park assist / self parking system.

That’s in addition to a reverse camera, front and rear parking sensors, and all the systems you’d expect, like stability control, anti-lock brakes, hill-start assist and seatbelt reminders.

Airbag coverage for Optima models is six: dual front, front side and full-length curtain. And parents will be happy to learn there are three top-tether attachment points, and two ISOFIX anchors, too. 

If you've been wondering to yourself, "where is the Kia Optima built?"The answer is South Korea. 

Like all modern EVs, the Kia should be cheaper to maintain than conventional cars purely because there are fewer moving parts.

Energy costs will come down to where you charge from and whether you have access to home solar panels.

The warranty is typically Kia-good, though, with seven years and unlimited kilometres on the basic car and seven years and 150,000km on all high-voltage components.

Kia offers a three-year, five-year and seven-year servicing plan at $733, $1371 and $2013, respectively.

Service intervals are every 12 months or 15,000km, whichever comes first.

Kia remains a shining light in terms of its new-car-ownership promise, with a very strong seven-year/unlimited kilometre warranty. It makes a lot of sense if you plan to hang onto the car for a while. There's no extended warranty available, which is understandable.

That plan also includes a roadside-assist plan for the same seven-year period, provided you maintain your car with Kia Australia. So, given you get one year to start with, then you get an extra year of cover every time you go back to Kia to get your car serviced, you could end up with eight years of coverage. Nice!

Servicing is due every 12 months or 15,000km, with the first seven years covered by a capped-price-service cost / maintenance cost plan. The costs are: service one - $289; two - $466; three - $360; four - $559; five - $325; six - $599; seven - $345. That makes a total cost of $2943, which is competitive for its class. Keep your owners manual or logbook up to date, and your resale value should hold up better.

If you have concerns about common problems, issues, reliability ratings and durability, you should check out our Kia Optima problems page.