Cadillac Optiq vs Lexus Es350E

What's the difference?

A taste test, but so far so good for the Cadillac Optiq, which is already my favourite model in the Caddy range. More space than you think meets a lovely cabin experience and a punchy powertrain.

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

Since launching in Australia in 1992, the ES has always felt like what it clearly was: an overpriced and overblown Camry that never quite drove well enough to justify its premium positioning.

It felt sub-Lexus in most of the ways that mattered.

The ES350e, however, builds on the Camry basics with unique styling, packaging, steering, suspension and powertrain, while evolving the technology and luxury with the times.

A few ergonomic missteps aside, this is by far the best version ever, and an exceptional value proposition to boot.

In EV guise at least, four decades and eight generations in, the ES has finally come of age.

I really like the exterior of this Optiq, and especially the front-on view, with its vertical DRLs and that bold Cadillac grille delivering real medium SUV street presence. 

You could argue the side profile is a little more vanilla (discounting the big wheels, of course), but it looks swept-back and sporty, and not as though it has been designed exclusively for aerodynamics above all else. That's a compliment, not an insult. Cadillac's engineers say every line and crease has been developed to help it slip through the air, but it does it without looking like a science experiment. 

The material choices inside are lovely, too. The brand says it has focused on sustainable and recycled materials (the centre console is made from tulip wood and recycled newspaper, for example), but the highlight in my test car was the fabric derived from recycled polyester fabric that lined the door panels and much of the dash. It's a refreshing (and comfy) departure from the norm.

Less positive is the level of Mar-a-Lago bling dotted elsewhere in the cabin, like the chrome ringed centre console and silver-tipped vent controllers. They jar with the otherwise dark, calming and modern-feeling space.

There are physical buttons galore, controlling all your climate settings along with steering-wheel controls as shortcuts for key functions, but there is also still a bit of on-screen action for things like quick access to your driving modes.

The tech looks fab, though, with the curve through the screen looking intentional and elegant and way nicer than the tablets plonked in a lot of EVs these days.

The Lexus is considerably taller now. That’s because it rides a little higher, like a crossover sedan. Which the traditional Lexus demographic ought to love.

The dimensions tell the story, being 5145mm long (+170mm over the previous ES), 1920mm wide (+55mm), 1555mm tall (+115mm) and with a 2950mm (+80mm) wheelbase.

The fastback styling, aiding aerodynamics, fits in with the current, rakish Toyota Crown sadly not seen in Australia that the ES shares much of its TNGA-K architecture with.

Its low bonnet line, fresh LED lighting signatures, blanked-out grille and edgy details like the heavy side crease lines, unique recessed door handles, frameless mirror casings and 21-inch turbine alloys, give the Lexus EV a boldness that finally banishes the old blobbiness.

Against the sparkling metallic silver, even the hockey-stick side motif has a place, though it may not be to everybody’s taste.

If the ES’ architectural exterior seems fussy, the interior is far calmer, with an inviting warmth and elegant layout that, while still minimalist, avoids the cold, bare, buttonless and oversized screen sameness of many premium EVs nowadays.

Oh, and it’s also massive inside.

The Cadillac Optiq is around 4.8m long, 1.9m wide and 1.6m high, which is slightly longer than your average mid-size SUV. And I would argue most of that extra space is located in the back seat, where – at 175cm – I had no problem stretching out behind my own driving position. There was plenty of knee room and, thanks to a virtually flat floor, no bulky tunnel getting in the way for the middle-back rider, either.

Headroom could be a touch more challenging. It was no issue for me, but there wasn't a ton of clear air between the top of my head and the raked roofline, so six-foot-plus passengers might be stooping. Still, if your kids are six-foot-plus, get them into the NBA and have them buy you a car instead.

Elsewhere in the back there are cupholders in the pull-down seat dividers, ISOFIX attachment points in each window seat and twin USB-C ports. There are air vents but no temp controls for backseaters.

The boot is sizable, too, with Cadillac promising 744 litres of cargo space with the rear seats in place and 1603 litres with the rear seats stowed flat. And kudos for not just providing a neat charging cable space under the boot floor, but also giving you a little zip-up suitcase to store it in.

Fun fact time. The latest ES is also larger than the original Lexus LS400 created to challenge the Mercedes-Benz S-Class in 1990. And the second-gen version from 1995. And the third released in 2001.

Wide doors and a higher-set cabin than in most sedans allow for effortless entry to, and egress from, a comprehensively modernised and impressively roomy interior that progresses in some areas and regresses in others.

Let’s begin with the positives by championing the shapely front seats that cosset and support beautifully the moment you sink yourself in them. Even after hours at the wheel. And heating elements add to their cosy feel on a frosty morning.

In fact, with its subtle diffusion, the highly effective heat-pump-aided climate control system feels lush, radiating within a cocooning, quiet environment that helps isolate its occupants from the outside world.

It isn’t difficult to find a commanding driving position either, assisted by exceptionally large mirrors and a crystal-clear surround-view camera display that help overcome poor side and rear vision that comes with the ES’ inherent shape.

Employing Toyota’s new operating system, as also found in the latest RAV4, results in improved multimedia connectivity, speed and functionality, with localised voice control tech that now understands Australianisms like ‘take me to Woollies’. The audio quality is also great.

Access to most controls is fine, with a special shout out to a redesigned gear lever that feels reassuringly intuitive (not a given in the electrified age), while there is a decent level of storage within the centre console, under it, in the door pockets (though they are too narrow for one-litre bottles) and in the glovebox if you remove the encyclopaedic handbook.

Banishing the Camry-esque mess of the old dashboard design, the new ES brings a far simpler look and cleaner layout, and is better for it.

But perhaps Lexus has gone too far the other way.

If it weren’t for the soft rubber fascia top, lovely bamboo panel inserts, head-up display and sumptuous seating material, it would seem more Chinese generic than Japanese luxury.

Plus, the freshly designed steering wheel’s powdery sheen also feels sub-brand. Like a flimsy handshake, it lacks… substance. Owners of previous models will immediately notice.

Worse still, while the infuriating capacitive switches that render operating the cruise control a guessing game on other contemporary Lexuses like the latest NX and RX have thankfully disappeared here, so have illuminated buttons.

Lexus crows on about the ES’ “hidden switches” on the steering wheel spokes and lower centre console area, with symbols that remain invisible until a hand hovers over them. A stupid guessing game you play at, say, 80km/h, only then can you see where to land a digit, demanding the driver’s attention and consequently taking eyes off the road for a moment. How did this unnecessary distraction and complexity get into production? Are legacy carmakers this bereft of sensibility?

So is eliminating climate controls buttons for touchscreen access only, because Elon Musk decided it was cool a decade ago. And remember how Lexuses used to have a large knob protruding out the side of the binnacle for driving mode settings? Look at last year’s ES to remind yourself. Now, you’ll again need to dive into the central display, rather than intuitively twist or push something probably while travelling at speed. First Mazda CX-5. Now Lexus. Japan, you’re better than this.

Enough whining.

Used examples of the ES enjoy a stellar career as high-end taxis and the reason has always been because of the rear seat.

This time around, with a longer wheelbase than before, there’s even more space for heads, shoulders, legs and knees. And the Lexus goes the extra mile again with perfectly comfortable outboard cushions and (fixed) backrests, a wide centre armrest, face-level vents, USB-C ports, overhead lighting, door sunshades and even longer doors to enter and exit from.

As with the front, the rear’s premium ambience is enhanced by the trim and textures that feel a cut above.

Further back, the ES’ cargo capacity is a handy 517 litres (VDA), and the floor is wide and flat, though the backrests are fixed so the only extra versatility is a ski port into the cabin, while the provided charge cables are not secured anywhere, rolling around inside the boot.

Underneath the floor is a wheel well, but no spare tyre; instead there is a repair kit that cannot fix blowouts, always destroys the tyre after use (even after a minor puncture) and is hundreds of dollars to replenish. No thanks. These are totally inadequate for Australian roads.

Now, the biggest news is that going electric costs just $2000 more than the established 300h hybrid redesign that is right behind the EVs.

Starting from $77,000 before on-road costs, the electric ES range is basically an all-in-one package with no options bar the powertrain.

The 350e Sport luxury grade is loaded, with adaptive LED headlights, leather upholstery, radiant heating climate control, a head-up display, a 14-inch touchscreen with panoramic-view monitor, wireless Apple CarPlay and Android Auto, twin wireless phone chargers, five USB-C ports, 17-speaker premium audio, a panoramic roof with sunshade, powered/vented/heated front seats and steering wheel with driver’s side memory settings, acoustic side glass, rear door sunshade, a powered boot lid, easy-close doors, automatic parking, adaptive dampers and 21-inch alloys shod with Michelin tyres. Classy.

It also brings paddle shifters for five levels of regenerative braking and an artificial sporty exhaust mode, as well as a plethora of advanced driver-assistance systems (ADAS) including autonomous emergency braking (AEB). More on safety later on.

There’s also a five-year free subscription to Lexus’ Connected+ services, allowing for a range of benefits including remote vehicle functionality and location if stolen, among other features, as well as six years of a Connected Media subscription.

Another $7000 buys the 500e Sport Luxury, adding a second electric motor that’s located on the rear axle for all-wheel drive and significantly extra performance, as well as an artificial manual mode that holds each fake gear ratio to the point it seems like it’s bouncing off a rev limiter. Weirdly entertaining.

Given this is now essentially a full-sized sedan, $77,000 buys a lot of EV metal compared to the properly mid-sized Polestar 2, Model 3 and Mercedes CLA alternatives.

Only the MG IM5 range, which is a big and bulbous liftback from China, substantially undercuts the ES.

That the Lexus now looks like a Lexus tops off an undeniably compelling value proposition.

There is only one trim level and powertrain on offer in the Optiq, called the Sport AWD, and with it comes dual electric motors – one on each axle – delivering a total 224kW and 480Nm. 

That's enough, says Cadillac, to push the Optiq to 100km/h in a hot-hatch-feeling 6.3 seconds and on to a top speed of 210km/h.

Under the ES350e’s bonnet is a permanent-magnet synchronous electric motor, that sends 167kW of power and 269Nm of torque to the front wheels via a single-speed transmission. It is capable of going from zero to 100km/h in 8.0 seconds flat, on the way to a top speed of 160km/h.

Choosing the ES500e adds an 88kW/170Nm electric motor located on the rear axle, for a total of 252kW of power (Lexus does not quote a combined torque figure) and AWD. This slashes 2.5 seconds off the 0-100km/h time, to just 5.5 seconds, while boosting top speed to 180km/h.

The AWD system can distribute up to 100 per cent of the available torque to whichever axle needs it for optimum traction, though in normal conditions the front/rear split when cornering is between 80/20 and 25/75.

Four driving modes are offered: Eco, Normal, Sport and Range (to maximise distance efficiency), while a Custom setting allows personalisation by altering the various powertrain, steering and suspension settings.

The downside of the Cadillac EV experience arrives here, with surprisingly slow charging speeds for a vehicle in this class. Remember, Australia's fastest DC chargers are rated to 400kW, and a vehicle like the BMW iX3 will accept it, taking you from 10 to 80 per cent charged in 21 minutes.

The Optiq, though, is rated to just 110kW, which feels a bit odd. The brand doesn't quote a 10 to 80 per cent time and instead says you'll accrue "up to 94 kilometres of range in 10 minutes".

Still, most people charge at home, and there the Optiq can be plugged into anything from a regular wall socket to a super-fast 22.1kW three-phase AC wallbox. 

The brand is promising a total 425km WLTP driving range with a fully charged battery.

Integrated into the TNGA-K architecture low down between the axles, the ES350e's 74.7kWh lithium-ion battery offers a WLTP range of 510km, which is 45km more than the 500e AWD’s 465km WLTP rating.

Driven at sustained highway speeds of up to 110km/h, via some fast corners as well as through inner urban streets, we were on track to achieve about 380km between charges.

Lexus says the ES350e's WLTP energy consumption is 16.4kWh/100km, or 1.5kWh better than the 500e AWD.

Of the four driving modes – Eco, Normal, Sport and Range – Range locks in front/rear torque distribution to 70/30 whilst restricting outputs to maximise efficiency.

The ES offers 22kW three-phase AC charging, and a maximum of 150kW DC charging.

First things first, this was a limited test of the Optiq, mostly stop-start Sydney traffic, so you’ll have to wait 'til we get the Caddy through the CarsGuide garage for a full and thorough test for a detailed driving review. But on first impressions, the signs are good for the Optiq.

The power delivery is rich and plentiful, and while it’s not aggressively fast, there’s more than enough punch from the line to get you up and moving in traffic.

It rides well, only feeling a bit brittle over properly rubbish road surfaces, and it offers a refreshing sense of connection to what’s going on beneath the tyres.

The steering can feel a little vague on-centre, however beyond that it feels direct but not darty, with a nice weight to the movement. 

The active noise cancellation and sound deadening appear to be doing their roles well, too. I drove past a roadworks site, and most of the drilling occurring outside was banished from entering the cabin. Impressive stuff.

Again, I want to spend more time with the Optiq before passing full judgement, but so far so good – it's my favourite of the Cadillac products to date.

Arguably the biggest difference from behind the wheel in the latest ES is not its larger body or the 350e’s single-motor EV powertrain, but the deeper changes made to the TNGA-K architecture that complement it.

While obviously still very related underneath to the previous model’s platform that’s also shared across most mid-sized Toyota and Lexus models, the extended wheelbase, stronger body, heavily revised steering and suspension geometry up front and a multi-link rear end in place of the old trailing arm-type set-up really switch things up.

In the 350e, they transform the ES from a bloated Camry to a proper, athletic-ish Lexus.

Like in most EVs, that starts with instant, rich acceleration and super-smooth power delivery, that translates to immediate throttle response and strong performance. Even in Eco. Select Sport, and you’ll enjoy a feisty, fast point-to-point luxury sedan. Rapid refinement.

That would be a waste if the chassis wasn’t up for some cornering hijinks, which – thanks mainly to the slicker steering and new independent rear suspension – the ES executes with confidence and poise.

Along our ragged hilly road test route festooned with potholes, broken bitumen edges and off-kilter camber, where the old one would sometimes struggle to maintain the driver’s chosen line, this one zips straight through, without being bumped out of shape.

Now, the steering isn’t especially sharp or tactile to the point where the driver feels connected to or as-one with the road, but then it’s not nervous or slavishly following each contour to the nth degree, either, so hits a handling happy medium.

The new adaptive dampers no doubt help keep everything in control here, but their bigger talent is soaking up the bumps and keeping everything cushy, comfortable and quiet – words we would never have collectively described any previous ES, especially ones wearing 21-inch wheels like today’s car. Quality Michelin tyres help.

Apart from a trigger-happy bleating driver monitor, the ADAS tech is sufficiently tuned for Australian road conditions, and that also helps maintain dynamic decorum.

Overall, then, at least in this initial launch driving phase, the new 350e feels safe and planted like a modern Camry to drive, but with a newfound polish and sophistication to finally leap-frog its proletarian Toyota fraternal twin and justify the hefty price difference.

The ES is now a relaxing pleasure to drive, with just enough talent to engage a keener driver. Yes, there are more fun and exciting luxury sedans out there, but this Lexus finally earns its stripes from behind the wheel.

And for that we’re pleasantly surprised and definitely somewhat astounded.

There is currently no ANCAP crash-test rating for the Lexus ES. But it does come with a long list of safety features.

Along with the AEB system that detects bikes, motorcycles and pedestrians, you’ll find front and rear cross-traffic alerts, intersection collision avoidance support, front and rear parking support braking and Emergency Driving Stop System that, if the driver becomes unresponsive, automatically slows the vehicle to a gradual stop, activates the hazard flashers, unlocks all doors and places an SOS call to emergency services.

Other ADAS tech includes a blind-spot monitor, emergency steering assist, lane trace assist, adaptive cruise control, road sign assist and automatic high beam.

Additionally, an electronic door latch system features safe exit assist, that delays a door from opening onto oncoming traffic until the danger has passed.

Nine airbags are fitted, including a centre airbag up front, while three child-seat top tether latches and a pair of ISOFIX anchorage points are integrated into the ES’ rear seat.

The Cadillac Optiq is covered by the brand's five-year, unlimited-kilometre warranty, which lags the similarly sized and priced Hyundai Ioniq 9 and Kia EV9, but is on par with the Germans. There's also five years of roadside assistance, while the battery is co vered for eight years or 160,000km. 

Service intervals are 12,000km or 12 months, and the brand says it is still finalising service pricing, so that’s something to ask about before you commit.

Rather than conventional dealers, Cadillacs are typically sold online with hands-on inspection at 'Experience Centres' - currently one in Sydney and one Melbourne. Service and test drive sites are also in place in Brisbane, Canberra, Adelaide, Perth and Hobart.

Lexus offers a five-year/unlimited kilometre warranty and roadside assistance, which is no more than average nowadays.

Service intervals are every 12 months or 15,000km, with capped-price servicing available at $625 annually for five years.

Starting from July 1, 2026, new ES owners can join the Encore Signature membership program. Free for five years, it is designed to keep them in the Lexus dealer network, providing access to free service loan vehicles, airport lounge access, hotel/restaurant offers and discounted fuel from Ampol, among other benefits.

There is also a five-year free subscription to Lexus Connected services with SOS and vehicle tracking features, as well as enhanced multimedia functionality.

At the time of publishing, there were 33 Lexus dealers across Australia.