Lexus IS300 vs Cadillac Lyriq

What's the difference?

The new-look Lexus IS takes several steps forward over its predecessor - it’s safer, smarter, sharper to look at and still pretty well priced and equipped.

It is feeling its age inside, and the competition has moved on in terms of engines and EV tech. But even so, if I was buying a 2021 Lexus IS, it would have to be the IS350 F Sport, which is just the most fitting version of this car, though the IS300h Luxury does have plenty to like for the money, too.

The Lyriq Luxury combines handsome styling and luxurious appointments with responsive yet supple ride quality, the choice of relaxed driving or exhilarating performance as desired and a decent driving range. Its lack of towing ability may be a deal breaker for some, but it's certainly worthy of consideration by prestige SUV buyers with a penchant for electric power and (for now at least) sub-$100K drive-away pricing.

You either get the Lexus look or you don’t, and I think this latest version is possibly more agreeable than the IS in years gone by.

That’s partly because the brand has finally done away with the odd spider-eyes twin-section headlights and daytime running lights - now there are more traditional headlight clusters, which look a lot more resolved than before.

The front end still features a bold ‘spindle’ grille, which gets different treatment depending on the grade, and the front, to my eye, looks better than before but still very much stuck in its ways. 

At the side you’ll notice the giveaway windowline hasn’t changed, despite the chrome trim line having broadened as part of this facelift, but you can tell the haunches have muscled up a bit, with the new IS now 30mm wider overall, and the wheel sizes are 18s or 19s, depending on the grade.

The rear accentuates that width, with an L-shaped lighting signature now spanning the entire re-sculpted boot lid, giving the IS a pretty tidy rear end design.

Overall dimensions for the IS are 4710mm long, making it 30mm longer nose to tail (on an unchanged 2800mm wheelbase), while it now spreads across 1840mm (+30mm) and is 1435mm tall (+5mm).

The exterior changes really are impressive - I think it is a more purposeful but also more pleasant looking car now than it ever has been in this current generation. 

The interior? Well, there’s not a whole lot to talk about in terms of design changes, aside from the repositioned and larger media screen - which sits 150mm closer to the driver because it’s now a touchscreen with the latest smartphone mirroring tech. Otherwise it’s a carryover affair, as you can see from the interior pictures.

The Lyriq has a generous 3095mm wheelbase, is more than five metres long (5005mm) and almost two metres wide (1977mm, including mirrors). Its 1620mm roof height is relatively low for a large SUV, resulting in a sleek and sporty profile combined with a muscular surefooted stance fronted by a finely-etched solid grille.

It rides on five-link independent suspension with GM’s ‘passive plus’ dampers, plus there’s electric power-assisted steering and big Brembo disc brakes in each corner featuring classy Cadillac scripts on the calipers. Turning circle is 12.1 metres, which is to be expected for a car of this size.

The interior design is an elegant blend of soft-touch materials and discreetly textured surface finishes with an emphasis on chrome and satin chrome highlights. It’s also spacious as you’d expect, with the panoramic sunroof creating a bright and airy feel.

We applaud Cadillac’s adherence to tradition with physical buttons and knurled dials and knobs for controlling key cabin and driving functions, in preference to annoying and distracting touchscreen menus. There’s also nice attention to detail with small jewel-like Cadillac emblems and scripts contributing to its prestige look and feel.

The interior design of the IS, as mentioned, hasn’t changed dramatically, and it is starting to feel old compared to some of its contemporaries.

It’s still a nice place to be, with comfortable front seats with electric adjustment and heating across all grades, and cooling on many variants, too. 

The new 10.3-inch touchscreen media system is a nice unit, and means you can essentially do away with the silly trackpad system that still resides near the gear selector, so you may still end up bumping it accidentally. And the fact the IS now has Apple CarPlay and Android Auto (though neither are wirelessly connectable) does further its appeal on the multimedia front, as does the standard 10-speaker Pioneer stereo - though the 17-speaker Mark Levinson unit is an absolute blinder!

The centre stack below the media screen retains a CD player, and still has the electromagnetic temperature adjustment sliders as well. That part of the design is dating it just as much as the transmission tunnel console area, which looks a bit out of touch by modern standards, though still incorporates a pair of cup holders and a reasonably large centre console bin with soft armrest padding.

The front doors feature trenches with bottle holders as well, while in the rear doors there is still no drink storage - a carryover annoyance from the pre-facelift model. However, the middle seat in the back doubles as an armrest with pop-out cupholders, and there are rear air vents too.

Speaking of that middle seat, you wouldn’t want to sit in it for long, as it has a raised base and uncomfortable backrest, plus there’s a huge transmission tunnel intrusion eating into leg and foot space.

Outboard passengers also miss out on toe room, which - for my size 12s - is an issue. And it’s hardly the roomiest second row in this class for knee room and headroom, as my 182cm frame was a touch squished behind my own driving position.

Children will be better catered for in the back, and there are two ISOFIX anchorages and three top-tether attachment points for baby seats.

The boot capacity varies on the model you buy. Choose an IS300 or IS350 and you score 480 litres (VDA) of cargo capacity, while the IS300h has a battery pack that robs it of some boot space, with 450L available. 

The Lyriq’s 2687kg kerb weight (largely due to its hefty propulsion battery) and 3200kg GVM results in a modest 513kg load capacity, which could easily be used up by five large adults before you could think about loading their luggage. It’s also not rated for towing in Australia which limits its appeal as a recreational vehicle.

Driver and front passenger enjoy palatial space and comfort plus ample storage with a bottle-holder and bin in each door. There's also a large glove box, pop-out drawer in the dash and a ‘floating’ centre console equipped with a lower tray, three USB-C ports, a 12V socket, wireless phone charging and a felt-lined box at the back with padded lid that doubles as an elbow rest.

The rear doors open wide for easy entry to the rear bench seat which even for tall people (I’m 186cm) offers ample room for knees and feet, enhanced by a flat floor with no transmission tunnel for centre passengers to straddle.

However, the top of my head brushes the roof lining and the unusually high floor height (we assume caused by the underfloor battery) results in raised thigh angles that concentrate more weight on the lower back.

Given the rounded lower backrest cushions, which integrate with the ISOFIX child seat anchorages in the outer seating positions, also protrude into a passenger's lower back region, the rear seat provides less than ideal comfort for tall passengers in contrast to the sublime luxury up front.

Even so, rear passenger storage is well catered for with a bottle-holder in each door, pockets on both front seat backrests and two cupholders in the fold-down centre armrest. The rear of the centre console offers two more USB-C ports, adjustable air vents and adjustments for numerous comfort settings.

The power tailgate provides access to the fully carpeted rear luggage area, which offers up to 793 litres (almost 0.8 cubic metres) of load volume with the rear seats upright and up to 1722 litres (almost 1.8 cubic metres) with the seats power-folded flat. This provides a versatile space for carrying everything from a mountain bike to flatpack furniture.

The luggage area also has four tie-down hooks, a 12V socket and a hinged floor section which when opened reveals an underfloor bin ideal for storing charging cables (see image).

The Lyriq is available in two trim levels comprising the Luxury from $122,000 and the Sport from $124,000 (both before on-road costs) but GMANZ is currently offering both for $95,000, drive-away.

These list and drive-away prices compare more than favourably when cross-shopping German luxury EV SUV alternatives like the Audi Q8 e-tron ($140,090), BMW iX ($142,900) or Mercedes-Benz EQE ($146,700).

The key differences between the Lyriq duo are visual, with the Luxury emphasising traditional elegance with lavish chrome detailing while the Sport is more performance oriented with greater use of dark trim elements.

Our test vehicle is the Luxury variant, finished in optional ‘Crystal White Tricoat’ paired with what GM describes as ‘Noir with Santorini Blue Accents’ interior trim.

Large and stylish in true Cadillac tradition, the Lyriq is built in right-hand drive form at GM’s Spring Hill manufacturing plant in Tennessee, instead of local RHD remanufacturing like its Chevrolet pick-up siblings.

Luxurious standard equipment includes big 21-inch multi-spoke alloy wheels and 275/45R21 self-sealing tyres (no spare), a full-length panoramic sunroof with power internal sunshade, power tailgate, rear roof spoiler, heated door mirrors with puddle lamps and more.

Concealed door handles discreetly extend to allow access to a sumptuous synthetic-leather interior with power adjustable/heated steering wheel, power front seats with heating/ventilation/massage/memory functions, outer rear seating also with heating/ventilation/massage, tri-zone climate control, five USB ports, 360-degree camera, wireless phone charging, a choice of 126 ambient interior lighting colours and more.

The driver is treated to a curved 33-inch colour LED instrument cluster/multimedia display which controls premium 19-speaker AKG Studio sound (including speakers in the front seat head restraints) and numerous multimedia functions including wireless Apple CarPlay/Android Auto connectivity.

The engine specs depend on the powertrain you choose. And at a glance there’s no variance between the earlier version of the IS and the 2021 facelift.

That means the IS300 model still runs a 2.0-litre turbocharged petrol motor producing 180kW of power (at 5800rpm) and 350Nm of torque (at 1650-4400rpm). It has an eight-speed automatic transmission, and like all IS models, it is rear-wheel drive (RWD/2WD) - there is no all-wheel drive (AWD/4WD) model here.

Next up the spectrum is the IS300h model, which has a 2.5-litre four-cylinder Atkinson cycle petrol motor teamed to an electric motor and nickel metal hydride battery pack. The petrol engine is good for a 133kW (at 6000rpm) and 221Nm (at 4200-5400rpm), and the electric motor produces 105kW/300Nm - but the combined total maximum power output is 164kW, and Lexus doesn’t provide a maximum torque figure. The 300h model runs a CVT automatic transmission.

The big horsepower offering here is the IS350, which runs a 3.5-litre petrol V6 engine, producing 232kW of power (at 6600rpm) and 380Nm of torque (at 4800-4900rpm). It runs an eight-speed auto.

All models have paddle-shifters, while the two non-hybrid models have seen tweaks to the transmission software that is said to “estimate driver intentions” for better enjoyment. 

The Lyriq features drive units with single-speed transmissions located at the front and rear which provide permanent all-wheel drive. Each is equipped with an electric motor, which combined produce 388kW of power and 610Nm of torque. There are also numerous selectable drive modes. Claimed 0-100km/h acceleration time is a rapid 5.3 seconds.

There’s still no diesel model, no plug-in hybrid and no full electric (EV) model - which means that while Lexus was at the forefront of electrification with its so-called “self-charging” hybrids, it is falling behind the times. You can get plug-in versions of the BMW 3 Series and Mercedes C-Class, and the Tesla Model 3 plays in this space in full-electric guise.

As for the fuel-sipping hero of this trio of powertrains, the IS300h is said to use 5.1 litres per 100 kilometres on the combined cycle fuel test. In reality, our test car’s dashboard showed 6.1L/100km across a mix of driving.

The IS300 with its turbocharged 2.0L engine is next best for fuel use, claiming 8.2L/100km. On our short launch drive of that model, we saw 9.6L/100km on the dashboard.

And the full-fat IS350 V6 petrol claims consumption of 9.5L/100km, while on test we saw 13.4L/100km.

The emissions for the three models are 191g/km (IS300), 217g/km (IS350) and 116g/km (IS300h). All three are Euro 6B compliant. 

Fuel tank capacity is 66 litres for all models, meaning your mileage range for the hybrid model could be considerably longer.

GMANZ claims official combined consumption of 22.5kWh/100km and up to 530km of driving range from the Lyriq’s 102kW lithium-ion propulsion battery.

When we collected our test vehicle the dash display was showing 100 per cent charge and an estimated driving range of 583km.

We drove 239km over five days and still had 52 per cent charge and 300km of range remaining when we did an overnight charge at home using the supplied AC charger with a domestic three-pin plug.

However, after 15 hours the charge only increased from 52 to 65 per cent for just 76km of extra driving range, so we would recommend installing a dedicated wall box for faster home charging.

In total we covered 297km across our usual mix of suburban, city and highway driving with average energy consumption just under the Cadillac's official figure, so based on our test results a driving range of around 500km per charge is credible.

GMANZ claims 7.4kW AC charging can add up to 43km of range per hour, which increases to 94km with 22.1kW charging. And up to 128km of range can be added in just 10 minutes using 190kW DC fast charging.

With the engine at the front and drive to the back, it has the ingredients for a pure driver’s car, and Lexus made a bit of a big deal about the new-look IS being more focused thanks to chassis adjustments and track width improvements - and it does feel a pretty nimble and tied-down car in the twisty stuff. 

It is competent at stitching together a series of corners, and the F Sport models are particularly adept. The adaptive suspension in those models includes both anti-dive and anti-squat tech, which is designed to make the car feel solid and flat on the road - and it does, thankfully without feeling twitchy or uncomfortable, with good suspension compliance even in the most aggressive Sport S+ drive mode.

The 19-inch wheels on F Sport models are fitted with Dunlop SP Sport Maxx rubber (235/40 front, 265/35 rear) and there’s plenty of tarmac tenacity.

The grip from Luxury-spec models on 18s could be better, with those Bridgestone Turanza tyres (235/45 all around) proving not quite the most enthralling. 

Indeed, the IS300h Luxury I drove felt very different in character to the F Sport IS300 and 350 models. It was surprising how much more of a plush-focused model the Luxury grade feels, and likewise it wasn’t as impressive in dynamic driving due to the tyre grip and less-enthusiastic drive mode system. The non-adaptive suspension is a touch more jittery too, and while it’s not to the point of discomfort, you might expect better for a car on 18s.  

Across all models the steering is accurate and direct enough, with predictable response and decent feel to the driver’s hands for this electric power steering setup. The F Sport models have even further retuned steering for “an even sportier drive experience”, though I found at times it could feel a little numb for rapid changes of direction. 

As for engines, the IS350 is still the pick. It has the best zest, and feels the most fitting powertrain for this model. It sounds good, too. The auto transmission is pretty clever, there's easily enough pulling power, and it's probably going to be the last of the non-turbo V6s in Lexus's line-up when this cars life-cycle is up.

The IS300's turbo engine was the most disappointing, lacking some urge and constantly feeling bogged down by turbo lag, transmission confusion, or both. It felt underdone in enthusiastic driving, though in dull day-to-day commuting circumstances it came across as more acceptable, though the remapped transmission software was far less impressive in this application than in the IS350.

The IS300h was a lovely, quiet and refined experience all around. It’s the one you should go for if you don’t really care about all that go-fast stuff. The powertrain is proven, it accelerates with nice linear delivery, and at times it’s so hushed I found myself looking down at the instrument cluster to see if the car was in EV mode or if it was using the petrol engine. 

The driving position is supportive and comfortable with multiple power-adjustment of the seat and steering wheel ensuring people of most heights and girths can enjoy luxurious travel.

The low dashboard height ensures vision to the front of the bonnet and its array of physical buttons, knurled dials and knobs minimise touchscreen use, which makes driving far less distracting than having to search through digital menus.

It’s very quiet given its electric drivetrain. Most noise emanates from the tyres but that is also minimised by the audio system’s noise cancellation technology and the cabin’s effective acoustic insulation.

Ride quality and handling are excellent thanks to the Lyriq’s suspension refinement and close to an ideal 50-50 weight distribution mostly influenced by the positioning of its drive battery.

This battery’s considerable heft (we reckon it weighs at least half a tonne) also creates ample sprung weight to assist the suspension in smoothing out bumps and its underfloor location ensures a low centre of gravity for surefooted cornering.

Standing start acceleration is more than impressive for a luxury car weighing almost 2.7 tonnes, with instantaneous torque from its two electric motors helping to propel the Lyriq to a neck-straining 100km/h in about five seconds.

This spirited response creates a sporty and engaging drive that belies the vehicle’s weight, particularly in Sport mode with its sharper throttle response and firmer steering feel.

We also like the choices for regenerative braking which include ‘One Pedal Driving’ mode with 'Normal' and 'High' settings, both of which make the quartet of disc brakes largely redundant (the High setting feels like heavy pedal braking) while optimising battery charge. There’s also a small paddle on the steering wheel which increases regenerative braking in response to the amount of finger pressure applied to it.

Our only criticism from a driver’s point of view is the absence of a head-up display (HUD) and traffic sign recognition (TSR), both of which are notable omissions for a prestige vehicle in this price range.

The Lyriq does not come with an ANCAP rating (typical for small volume production) but has a suite of passive and active features like multiple airbags including dual head side-curtains, AEB with intersection/front pedestrian/cyclist detection, lane-keeping, a 360-degree camera, parking assist, tyre pressure monitoring, adaptive cruise control and lots more. The rear bench seat has ISOFIX child seat anchorages on the outer seating positions and top tethers across all three.

In this part of the market it's fair to expect a head-up display and traffic sign recognition as standard but both are missing in action. 

On paper, Lexus’s ownership offer isn’t quite as enticing as some other luxury car brands - but it has a strong reputation for blissful ownership.

The Lexus Australia warranty period is four years/100,000km, which is better for duration than Audi and BMW (both three years/unlimited km) but not as accommodating as Mercedes-Benz or Genesis, each of which offer five-year/unlimited km warranty.

The company has a three-year capped price servicing plan, with maintenance every 12 months or 15,000km. The first three visits cost $495 each. That’s okay - but Lexus doesn’t offer free servicing like Genesis, and nor does it offer prepaid service plans - for three to five years for a C-Class, and five years for Audi A4/A5, for instance.

There is complimentary roadside assistance for the first three years, too.

That said, the company has its Encore ownership benefits program that allows a number of experiences and deals, and the service team will collect your car and return it, leaving you with a loan car if you need it.

The Lyriq comes standard with a five-year/unlimited km warranty including five years' of roadside assist, while the propulsion battery is covered by a separate eight-year/160,000km warranty.

Scheduled servicing is every 12 months/12,000km whichever occurs first, with costs for the first five years of scheduled servicing or five scheduled services included in the vehicle’s purchase price. These servicing terms are generous for this segment, although some rivals offer similar enticements like Audi’s six-year ‘complimentary’ servicing for its Q8 e-tron.

GMANZ has a national network of 45-50 dealerships across most capital cities and some regional areas but not all offer vehicle servicing.