Lexus IS350 vs Mercedes-Benz GLE300

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.

Whether you like Coupe SUVs or not is an entirely subjective matter, but there’s no denying the GLE 53 is a tech and spec showcase – some of the best Mercedes has to offer. If you can get past its relatively enormous dimensions and naturally compromised visibility – it’s even a hoot to drive.

The significant proportion of GLE consumers who are picking one of these over the regular version will be pleased with its many improvements. We’ll know more about how its price and specification lines up against primary rivals closer to its Australian launch date, so stay tuned.

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

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 GLE Coupe has improved so much in its looks it’s easy to see when it came to the second-generation GLE underpinnings, Benz had it planned from the beginning.

It looks mean, especially the 53 with its giant toothy grille. The stance is low and wide for an SUV, and I’m especially a fan of the much more resolved rear end.

It’s less bulbous and frumpy, more slick and menacing, rounded out nicely by the flick of a lip spoiler jutting out the rear.

You might think proportionally, the very idea of a coupe SUV is silly, and there’s no denying that, but then, you and I might not be the target audience.

That audience is someone looking for an avant-garde take on what a sports car actually looks like. They will be pleased – I’d say its even more resolved than BMW’s X Coupes and a little less science-fiction than Audi’s Q8. The incoming Coupe version of the Porsche Cayenne will be a real challenger.

The presence the GLE Coupe exudes extends to the inside, where there’s plenty of Mercedes wow factor. Level what you might at the brand’s use of silver fittings and flat dual-screen set-up, there’s no denying Benz offers an interior entirely unlike its competition.

The GLE has one of the best of the recent Benz interiors, too. I love the way the big dual-screen set-up is framed in a 'leather'-clad bay of vents.

I also like the real wood trim on our test car which runs across the dash and flows into the doors, and of course the wholly unnecessary vent-overload (becoming a Benz signature) pride of place in the centre of the dash.

It’s complemented by the tape-deck style silver switches for the climate controls which protrudes underneath.

The materials are great, with Artico trim running down the centre console, and across each doorcard. Almost every surface you’ll reasonably come into contact with is soft, and the commitment to real metals and wood is admirable.

Other highlights include the comfortable seats (with heating which extends into the armrests!) and AMG wheel which is flashy and aggressive, well suited to such a gratuitous vehicle.

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. 

Naturally, the entire idea of shaving a solid bit of roof off of an SUV is going to compromise the amount of ‘practicality’ you get from such a large footprint.

Those compromises are not only there, but they are quite obvious. The sheer height of the GLE makes peering over the edge of the bonnet difficult for parking, and the sloped roofline causes the A-pillar to eat quite a bit of your field of vision.

As you might imagine, it’s genuinely difficult to see much out of the back of the GLE Coupe. I caught myself continually adjusting the rear vision mirror – as though somehow it would grant me more vision out of the letterbox rear window.

While front passengers get away with plenty of room, rear passengers are a little harder done by. This is again, largely due to the roof pillar, which eats into headroom and gives the cabin a claustrophobic feel.

Thankfully, legroom is fantastic (largely due to that massive GLE platform), the trim is all just as good as it is in the front seats, and the back of the centre console gets its own set of climate controls, adjustable air vents and USB-C power outlets.

I’d hardly say there’s an abundance of bottle holders for occupants, but there are a few. They aren’t big or packaged in ideal locations, but you’ll be able to get away with four 300ml containers in the front and four in the rear.

The boot has been re-worked from the GLE Coupe’s predecessor, there’s five extra litres on tap, for a total of 655 litres (VDA) – so it’s far from useless, but still down significantly from the full size GLE which has a massive 825L of space.

Benz has made the boot more useful, too, lowering the sill by 60mm for easier access.

There’s no dancing around the fact that the GLE Coupe is a niche, gratuitous product, targeted at a well-off consumer.

We don’t know what the pricing will be for the Australian range yet – and we won’t for a few months. But what we do know is Mercedes-Benz will only bring two highly specified variants to our market for the launch.

Those two will be the AMG-tuned GLE 53 which we were able to test at the launch, and a slightly lesser specified GLE 450.

Expect tall pricing, north of the wagon bodied GLE 450 ($111,341) for the 450 Coupe and outgoing GLE 43 Coupe ($145,829) for the GLE 53 Coupe.

The GLE Coupe will go into battle against the new BMW X6 (from $121,900) and Porsche Cayenne (from $116,600) and Audi Q8 ($128,900)

Standard features, as with the rest of the second-generation GLE range will be pretty good. We don’t know exactly what Australian-specified vehicles will get, but the GLE 53 as tested in Europe came with an extensive list of items.

You can expect all variants to get 20- to 22-inch alloys, electric tailgates, LED headlights, and Benz’ signature ‘Artico’ faux leather interior trim. The 53 also had a swish fully RGB adjustable interior ambient lighting suite and real wood in the dash. Very nice.

All GLE Coupes will have the impressive MBUX (I’m told it’s said “em bee you ex”, not “em bucks”) digital dash and multimedia suite, consisting of two 12.3-inch screens, one a digital dash, the other a multimedia screen.

The flashy setup also supports Apple CarPlay and Android auto as well as the usual connectivity via Bluetooth and packs several USB C outlets alongside Aux and USB 2.0. Our test 53 had a head-up display, too.

Mercedes’ built-in assistant (summoned by uttering 'Hey Mercedes') has perhaps the best native voice recognition on the market in terms of its accuracy and what it can do.

You can do things like adjust air conditioning, open the sunroof shade (oh yes, the GLE comes with a panoramic sunroof, too), and even find your specific music tracks via internet radio.

Then there’s the built in nav suite which is also one of the better ones on the market, featuring some very cool innovations.

The system will switch to the forward-facing camera when approaching an intersection and show you where to exit using augmented reality. Neat.

The 53’s system is also uniquely adjustable with AMG-specific themes and modes for the dash cluster, setting it apart from the lesser GLE 450 when it arrives.

It’s safe to assume there will be an extensive options list, including the 'E-Active Body Control' system (a $13,000 option on the wagon version) which uses cameras to detect road quality and optimize the air suspension system to suit. It also leans into corners. We’re keen to test it when it becomes available on the GLE 450.

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. 

Australia will only get one engine in the GLE Coupe – a 3.0-litre 48-volt mild-hybrid in-line six-cylinder twin-turbo petrol.

There will be two states of tune. The 450 will be able to make use of 270kW/500Nm, while the AMG-spec GLE 53 we were able to drive at the launch has more power still (thanks to extra hybrid augmentation on the turbo) for a total of 320kW/520Nm.

For a quick comparison, the single-variant Q8 produces 250kW/500Nm from a twin-turbo V6, while the equivalent X6 – the M40i packs a 3.0-litre twin-turbo in-line six to make 250kW/450Nm.

The GLE 53 has a nine-speed auto transmission which is specially tuned by AMG to go with the expanded list of available drive modes. All Australian GLE Coupes will be all-wheel drive via a permanently active '4Matic+' system.

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.

The claimed combined cycle fuel consumption figure for the GLE 53 Coupe is 9.3L/100km, and while that’s not bad for something this heavy – keep in mind it’s an NEDC figure and not the widely-used WLTP figure so it could be a bit different by the time the GLE Coupe launches here.

Regardless, the fuel consumption is helped along by the abundance of ratios in the transmission and 48-volt mild-hybrid additions which help to remove inefficiencies from the drivetrain.

Our sweet but brief drive route in the Austrian Alps was not a fair reflection of fuel consumption, so we don’t have a real-world figure for you yet.

Expect the GLE 53 to require premium 98 RON unleaded petrol to fill its 65-litre fuel tank.

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 resurgence of the in-line six engine is a glorious thing, and it makes the GLE 53 quite a fun, if chunky, unit to drive.

Acceleration is urgent thanks to the pre-spooled first-stage turbo, and the transmission flicks through the gears like there’s nothing to it.

It’s perhaps not as 'smart' on the downshifts as competitor transmissions from Audi or Porsche, although Mercedes was keen to point out this will get better over time as the car’s computer 'learns' your driving characteristics.

Thankfully though, unless you’re in 'Eco' mode, the GLE 53 does a great job of letting you ride each gear out, giving you that signature in-line six sensation of an entire revolution range of relatively even torque distribution – a characteristic which Mercedes has gone to pains to perfect on a turbocharged engine.

This has the result of letting you bask in the sound for precious extra seconds.

While not as furious as preceding V8s – it is distinct. It’s refined and rich, although more subdued than you might have come to expect from vehicles wearing the Affalterbach badge.

I’m a fan. It’s an engine befitting a more refined sports machine than a garish statement.

The AMG suspension tune was great, too, keeping the massive Coupe truly under control in the corners, while soaking up bumps (which we’ll admit, there were few of on Austria’s immaculate roads).

It was interesting to read colleague Matt Campbell found the standard suspension less than impressive on the regular SUV-shaped variants, so we’ll see what the more basic set-up on the 450 is like at the Coupe’s launch.

I have no complaints about the steering, which proved to be responsive, smooth and accurate, while not erring too far on the heavy side, even in 'Sport' or 'Sport+' mode.

My main complaints lie with outward visibility and the sheer size of the GLE’s body. There were some nerve-wracking moments piloting it at speed around narrow streets with tall snow embankments encroaching.

And no matter how much I adjusted my seat and mirrors, the view out the back was particularly compromised.

We don’t know exactly how Australian cars will be specified yet, but expect the two GLE Coupes to come with flagship active features like high-speed auto emergency braking (AEB), lane departure warning with lane keep assist, blind spot monitoring, rear and front cross traffic alert, adaptive cruise control, 360 degree parking sensors and cameras, fully auto LED headlights, semi-autonomous parking, and driver attention alert.

The GLE has nine airbags and dual ISOFIX child seat mounting points in the outer rear seats.

Regular wagon bodied GLE class vehicles have maximum five-star ANCAP safety ratings as of 2019, and we’ll update you when we hear more about the Coupe variants.

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.

Mercedes continues with its three-year/unlimited kilometre warranty which is frustratingly standard across European premium car manufacturers in Australia– particularly its primary competitors, Audi and BMW. We doubt this will change any time soon.

Like VW Group competitors, though, Mercedes is now bundling in service costs in packages which can be tacked on to finance. The GLE requires servicing once a year or every 15,000km – we’ll update you on the cost of the packages closer to the Coupe’s local launch.