Mercedes-Benz Gls450 vs Lexus CT200h

What's the difference?

The new GLS is everything you’d expect of a Mercedes-Benz with an S in its name. Luxury, performance, space, and in this case, thoughtful practicality. A super-capable, super-sized family truckster with the lot.

The cheapest Lexus of them all isn’t chasing badge snobs with the CT200h as blatantly as Mercedes-Benz, BMW and Audi do with their entry level cars… but it’s perhaps not quite the Lexus you’d expect it to be.

It has a lovely front-of-cabin, for example, but there’s a lot of last-gen Prius in plain sight in the rear of the cabin.

The hybrid powertrain, too, is noble in concept, but the day-to-day reality is that it’s not as nice to drive, especially town to town, as a regular petrol-powered car of similar size.

The foot brake, silly multimedia joystick and odd gearshifter also spoilt the party a bit.

Empty nesters who are looking for a nice city runaround with a tinge of greenwash about it will love it… and if the current Prius is anything to go by, the next CT will be a very good thing indeed.

Launched globally in mid-2019, Merc describes the GLS as the S-Class of SUVs, which is apt given its 5.2m length, 2.5-tonne mass, and ultra-premium specification.

As mentioned, the GLS is big; a step up from the already substantial model it replaces. Built with the US market in mind, in fact it’s produced in Tuscaloosa, Alabama, it’s more than five metres long, close to two metres wide, and over 1.8m tall. And there’s more than three metres between the axles, a 60mm wheelbase increase over the previous model.

And despite the size of the canvas, the Benz design team has managed to make the GLS look like a modern Merc. Signature elements include obvious ones like the slatted grille with a couple of three-pointed stars on the nose.

But there’s also, the carefully chiselled twin ‘power dome’ bonnet, scowling LED headlights and vents to aid front brake cooling and smooth aero performance around the front of the car.

The big beast’s off-road intent is highlighted by extensions around the wheelarches, with big optional 22-inch rims sitting underneath. The fact they look right-sized for the car speaks volumes about its scale.

The racy AMG Line package is standard, and a recess and pronounced character line, tightening the lower waistline is a familiar Merc treatment, plus alloy roof rails toughen the look while dialling up practicality.

The rear is relatively simple, borderline generic, with tapered tail-lights offering the only strong whiff of design personality. But believe it or not, thanks to careful detail sculpting of the body, and smoothing underneath the car it boasts a drag figure of Cd 0.32. Outstanding aero performance for a large SUV.

The driver and front passenger are presented with a sweeping dashboard dominated by twin 12.3-inch digital screens, one primarily covering the instruments, and the central screen managing the MBUX media system, including audio, nav, phone integration, car set-up, and more, plus ‘Hey Mercedes’ voice control.

The overall feel is simple, and restrained, yet massively confident, with a subtle colour palette, large squared-off elements defined by brushed metal finishes, and an obvious, intense attention to detail, from the haptic controls to the beautifully finished, multi-function steering wheel.

And the standard Burmester audio system includes a two-way in-car communication function that subtly amplifies the driver and front passenger’s voices for those in the third row, and vice versa. Sheer genius.

There are some light external revisions for the latest update of the compact Lexus CT200h. New grey 17-inch alloys are unique to the Sport Luxury, along with a black roof treatment, new L-shaped LED driving lamps that match new-design LED tail-lamps, while Lexus designers have also added its new spindle grille to the brand’s smallest model.

It manages to be inoffensive, but it doesn't really reflect the brand's latest design language of 'real world concept cars' like the NX and the LC ranges.

Inside, a couple of new leather colour options are available for the CT200h, while the addition of the wide-format 10.3-inch screen to the top of the centre console is the single largest change. Interestingly, the steering wheel controls appear to have regressed a little from the previous model, no doubt brought about by the addition of the new driver aids.

Space is obviously a critical factor here, and no surprise there’s copious amounts of it inside the GLS.

Front seat passengers enjoy plenty of breathing room, without feeling remote from one another, and there’s lots of storage in the shape of a large lidded box/armrest between the seats, a decent glove box, two big cupholders and jumbo door pockets with room for large bottles.

There’s one data-enabled USB port in the front, two charge-ports in the second row, and four in the third row. Shouldn’t be any complaints about powering mobiles, tablets or games.

The second row feels every millimetre the SUV limo. Simply getting in and out is made easier because an auto lowering function drops the car 25mm when one of the doors is opened.

I was able to sit behind the driver’s seat set for my 183cm position with heaps of head and legroom on offer. And there’s an extra 10cm of electrically adjustable travel to play with if those in the third row agree.

The fold-down centre armrest features a lidded storage tray and twin pop-out cupholders. There are netted pockets on the front seatbacks, and again, the door bins are big enough for large drink bottles.

Three adults across the rear is a breeze, there’s climate control ventilation, and a huge glass sunroof is standard. Rather than asking ‘Are we there yet?’ the kids will be disappointed when you arrive!

Then there’s what the Cleary family refers to as ‘the way back seat.’ A pair of third row seats for the lucky kids that get to inhabit their own little world. Getting in and out is relatively civilised thanks to electric slide and tilt for the second row seats, and space is generous. I could sit comfortably, so the kids will be all smiles.

With all seats upright cargo capacity is enough for a seven-person day trip (355L VDA). Press the button to fold the 50/50 split-fold third row down and your options expand substantially (890L). And with 40/20/40 split-folding second row lowered, transportation of a full, three-ring circus is on the cards (2400L). Overall, more space than the arch enemy BMW X7.

Plus, the ability to lower the car 50mm thanks to the standard air suspension makes life even easier. And one button lowers the second and third rows at the same time.

The spare is a collapsible space-saver, and towing capacity for a braked trailer is 3500kg, with a tow ball weight of up to 140kg. The ESP system also features a trailer stabilisation function that counters oscillation with “braking intervention.”

The CT200h basically replicates a small hatchback in terms of interior size. It'll seat five, but if you try to put three adults across the back, they won't be particularly happy about it. 

The roofline is quite low and the car’s waistline is high, which makes the glasshouse feel small. Room in the front is adequate, but only just for taller drivers; the sunroof, as fitted to our test example, takes away a good chunk of headroom, despite the CT200h standing just 5mm lower than a Corolla overall. 

The seats themselves, too, are mounted just a touch high to be comfortable for taller drivers, while rear seaters will complain bitterly about being stuck behind my (184cm) driving position. However, my more diminutive wife pronounced herself very comfortable behind the wheel and in the passenger seat.

A nice, small steering wheel sits in front of a single-dial dash that sports two digital screens either side. The left-hand screen changes when you change the drive mode dial between Eco, Normal, and Sport. And there's also a full EV mode button in handy reach. 

Two cupholders are line astern between driver and passenger, although storage is at a premium thanks to the size of the car. Climate and multimedia controls - and even an old-school CD player – flow right through underneath the centre console, which steals away valuable space. There are no extras like wireless charging bays, nor is there Apple CarPlay or Android Auto.

There are bottle holders in the door, but don't try and stash anything that's over one litre in size because it just won't fit.

It's quite an austere proposition for rear-seat passengers, with no bottle holders in the doors, no cup-holders and no charging points. There are fixed vents under the front seats and on the right side of the rear area, so it's not a complete desert, and there are ISOFIX mounts for two child seats in the rear.

Another practicality issue that's unique to the CT200h is the gear shifter. It operates as a spring-loaded joystick, and unless you're watching the dash indicator, it can be tricky to know which gear you're in. Other car makers have actually recalled cars with this style of transmission stick, and it's certainly something that you have to get used to. 

Likewise, the old-school foot brake is certainly an anachronism in something like a Lexus.

Based on the previous generation Prius, the nickel-metal hydride battery for the CT is hidden underneath the rear seat, so it doesn't steal away too much boot room. However, the boot floor is still quite high, and the area is rather small at 375 litres with the seats up. There is 985 litres available when you drop the seats, but the aperture is short and narrow, so larger items will be a squeeze. There is a space-saver spare nestled away underneath the boot floor, too.

Another practicality note in the negative column is Lexus's insistence on the odd joystick control for its multimedia system. It's simply not very good. It’s imprecise when compared to a touchscreen, the action and feel of our test unit was very much less than premium, and it’s just awkward and clumsy to use. The CT is not the only Lexus to use it, but we wish the company would just see the light and ditch it all together.

The 1.8-litre petrol-electric CT200h comes in three different flavours – the Luxury, the F-Sport as tested here, and the Sport Luxury. The range now kicks off at $40,900 (up $2150) and peaks at $56,900 with the Sport Luxury (up $810).

The F-Sport may be a little lacking in the actual ‘sport’ department, but it’s is pretty flush with flash kit, including not one but three motors (one petrol and two electric), auto lights and wipers, a wide 10.3-inch multimedia system, leather seats, dual-zone climate control and new 17-inch alloys.

At $50,400 plus on-roads, the F-Sport has jumped in price by $1960, but it’s gained a host of new gear, including a new driver aid system that adds auto emergency braking (AEB), pedestrian-detecting pre-collision warning system, lane departure warning with steering assistance and adaptive cruise control.

There are also LED headlights and taillights, as well as revised styling for the front and rear bumpers.

The CT will be cross-shopped against other premium tiddlers like the Mercedes-Benz A-Class, Audi’s A3 and the BMW 1 series. Comparing it like-for-like in the hybrid category, there’s the top spec Toyota Prius i-Tech, while Nissan’s Leaf could theoretically be lumped in both on price and on environmental grounds.

There are two engines on offer. The 3.0-litre (M256) in-line six-cylinder turbo-petrol GLS 450 4Matic, and the 2.9-litre (OM656) in-line six-cylinder turbo-diesel GLS 400 d 4Matic.

The all-alloy, twin-scroll single-turbo petrol engine delivers peak power of 270kW from 5500-6100rpm, and maximum torque of 500Nm across a broad plateau from 1600-4500rpm. It also features a 48-volt electrical system driving the ‘EQ Boost’ set-up, able to deliver an extra 16kW/250Nm for short periods. The integrated starter-generator also enables energy recuperation.

Although the all-alloy, twin-turbo diesel features variable valve lift it gives some ground on power, offering up 243kW between 3600-4000rpm, but torque is a solid whack, with 700Nm on tap from 1200-3000rpm. Worth noting, that to minimise emissions this engine features a “selective catalytic reduction converter” in the exhaust, which brings with it the use of an ‘AdBlue’ reducing agent. The separate AdBlue tank has a capacity of 31.6 litres.

The nine-speed auto transmission is the same in both versions, although the diesel has a slightly lower final drive ratio.

The 1.8-litre twin-cam petrol engine makes a relatively low 73kW and 142Nm, while a 60kW, 207Nm electric motor that’s also connected to the front wheels chips in its share.

Combined, the system produces 100kW, while the torque figure translates to around the 150Nm mark. That juicy 207Nm doesn’t come into play, sadly, given that the petrol engine – which is built to run cooler than a traditional Otto cycle engine, and therefore more efficiently – does most of the work.

Throw in a transaxle for the electric motor and a power inverter, and things are getting complex. However, if the Prius is any indication, the CT200h’s drivetrain is durable and relatively serviceable, with batteries estimated to last ten years or longer.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle for the GLS 450 is 9.2L/100km, the more frugal GLS 400 d trimming that to 7.7L/100km. The petrol 450 emits 210g/km of CO2 in the process, the diesel 400d dropping that slightly to 202g/km.

Stop-start is standard, you’re looking at premium unleaded for the 450 GLS, and you’ll need 90 litres of dinosaur juice to full the tank on both models.

Here’s the odd thing – over 220km of largely highway driving, I couldn’t get the CT200h under a dash-indicated 10.4 litres/100km, against a claimed combined fuel economy figure of 4.4L/100km. 

I topped the tank off with 18 litres of fuel, which works out at a closer 8.8L/100km… but it still ain’t anything like 4.4. 

Another owner I spoke to, though, said he regularly records high fives with his CT200h in mixed conditions.

It runs a 45-litre tank that’ll happily take 95 RON fuel.

Merc claims the GLS 450 will sprint from 0-100km/h in 6.2sec, and the 400 d in 6.3sec. Not hanging around for a 2.5 tonne mothership. But the standout is the 400 d’s torque. All 700Nm of it available from just 1200rpm to 3000rpm; right in the mid-range sweet spot.

The nine-speed auto transmission is smooth yet responsive, with paddles on the wheel for manual shifts when you want to pick the ratio. The combination of effortless grunt and the nine-speeder keeping things on the boil is an impressive one.

Suspension is by double wishbones at the front and multi-links at the rear, and while you can feel the weight in cornering, the standard Airmatic air suspension (which does away with steel springs) is superb in terms of ride comfort and body control.

We took a deep breath and pushed enthusiastically through a series of sweeping corners and the fat (285/45 fr - 325/40 rr) Continental ‘PremiumContact 6’ rubber wrapped around our car’s (optional) 22-inch rims gripped hard.

The ‘4Matic’ all-wheel drive system also seamlessly shuffles torque between the front and rear axles (theoretically up to 100 per cent in each direction).

Merc has put extra focus on body rigidity, the tuning of engine and suspension mounts, and sound absorption, and it shows. The GLS 400 d is beautifully refined on the highway. A neat touch is the car automatically lowering 15mm at motorway speeds or when ‘Sport’ mode is selected.

Steering is electromechanically assisted, and Merc says the front suspension geometry has been revised to minimise vibration through the wheel. And yes, feedback is minimal, but unfortunately so is road feel with only a general connection between your hands on the wheel and the front tyres on the bitumen.

When you’re steering a large beast like this, often with something substantial hitched to the back, you want to know braking performance is up to the task, and the GLS’s big ventilated discs all around deliver reassuringly strong stopping power, with nice, progressive pedal feel to boot.

The seats are adjustable six ways to Sunday, but beyond that they’re comfortable and supportive, even over long stints behind the wheel.

We stayed on the bitumen, because, let’s face it, that’s where this car will spend 99.9 per cent of its time, with the exceptions of the boat ramp, a ski weekend or pony club.

For those special occasions the optional ‘Off-road engineering package’ adds a low-range transfer case, inter-axle locking, hill descent control, and under body armour for more serious work.

If you've ever driven a Prius, then you'll be very familiar with the way that the CT drives. Based around a 73kW Atkinson cycle petrol engine which focuses on fuel efficiency rather than outright power, a 60kW electric motor (the pair combine to produce 100kW in total), a nickel-metal hydride battery array and a CVT gearbox, the CT200h – like the Prius – is a bit different to a regular hatch.

Under light throttle, the CT is quiet and moves along quite well, and you can even use full Electric Vehicle mode at speeds under 45km/h for a brief amount of time, (slightly less than two kilometres), and with a very gentle right foot.

The battery array is recharged via the petrol motor as well as regenerative braking (where heat energy is captured and directed back to the electric system) – but unlike a petrol-electric plug-in hybrid, there’s no way to stick a 240v cable into the CT to top up the battery. 

It has the unusual whines and odd noises that you would associate with a partly electric car, but the petrol motor sounds just like a regular old four-pot petrol unit, and it’s running most of the time.

One issue with the drive of a hybrid is its ability, or the lack thereof, to get off the line in any sort of hurry. You really have to mash the throttle to get going, which takes some getting used to. There’s also some hesitation and un-Lexus like thumps from the drivetrain if you confuse it by almost stopping then taking off again.

The CT200h’s biggest bugbear is that the fourth generation Prius exists. Built on a more sophisticated newer-generation platform and with a more refined drivetrain, the new Prius is a great insight into how good the next CT will be – and what the shortcomings of the current one currently are.  

The CT works well in high-traffic city environs, where a light throttle foot helps get the best out of the unusual drivetrain. Lots of lag from rest is an annoyance, as is an excess of CVT whine under hard efforts, but the CT200h pootles around town very well.  

Its small size does play against it when it comes to keeping out road noise at freeway speeds, though the CT is superior to most other similarly sized cars in this regard. As an aside, its build quality is nothing short of amazing, with minimalist panel gaps, a tight interior and lashings of paint on every surface.

Part of the update for 2018 is the addition of several driver aid systems, including AEB across the range, lane departure control with steering and adaptive cruise control. 

The F-Sport also has reversing camera and eight airbags as standard, ensuring the maximum five-star ANCAP safety score it managed in 2017.

The Mercedes-Benz range is covered by a three year/unlimited km warranty, which, like Audi and BMW continues to lag behind the mainstream market where the majority of players are now at five years/unlimited km, with some at seven years.

On the upside, Mercedes-Benz ‘Road Care’ roadside assistance is included in the deal for three years.

Service is scheduled for 12 months/25,000km (whichever comes first) with pricing available on an 'Up-front' or 'Pay-as-you-go' basis.

As a guide, service pricing for the outgoing GLS is set at $2600 per service (up-front) and $3250 (PAYG), a saving of $650 a pop. Fourth and fifth services are also available for pre-purchase ($3550 and $4900).

Lexus sells the CT with an unusual four-year/100,000km warranty, which includes roadside service coverage. The battery pack has an eight-year/160,000km warranty, while Lexus would like to see you back for a service every 12,500km or 12 months.
 
It’s not just about a warranty or a service interval with Lexus, though. For decades now, its customer service record has topped all industry measures, and everyone we know who has bought a Lexus with their own money has raved about the quality of the service received. 

As well, it’s a level of service that’s provided across the range. It’s a tangible benefit of buying a CT200h.