Mercedes-Benz GLC-Class vs Lexus UX300E

What's the difference?

Like I said right from the start, this new, hybrid version of the AMG GLC63 is technically superior to the model it replaces in every meaningful way. It is faster, more powerful and more fuel efficient and therefore a better performance SUV than the model it replaces.

Is it a better model than the one it replaces? Ultimately that will come down to how much stock you put into the soundtrack and your feelings on an AMG not powered by a V8 engine.

Because if you can see past that, then the AMG GLC63 is an absolutely fantastic performance SUV. Not only does the new powertrain make it faster in a straight line, but the chassis is very well-balanced, making for an engaging driving experience.

For those who can look past the smaller engine they will be rewarded with an incredibly fast and rewarding-to-drive member of the AMG family.

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

The Lexus UX300e Sports Luxury nails the luxury and standard features list! It certainly feels like a premium SUV inside and the updated technology and driving range were sorely needed to keep this competitive, but once you start looking at its rivals, which all offer similar specs and better driving ranges, the price point starts to feel a smidge high. However, the ongoing costs and the complimentary bonuses that Lexus throws in, are great.

The GLC63 is unmistakably an AMG from the moment you first lay eyes on it. That’s thanks to the AMG-specific elements, starting with the grille with vertical strikes and the AMG crest on the bonnet; which is now a signature item for the performance sub-brand.

The GLC63 is also fitted with the Night Package II design kit; this adds a darkened grille and black chrome badging to further enhance its visual appeal.

The AMG-specific alloy wheels and more aggressive stance do mean the GLC63 stands out from the rest of the GLC range, helping it look fast even when it’s standing still.

The design hasn’t seen much change and Lexus seems to be encouraging an understated EV design as it looks just like its fuel-based siblings.

I don’t mind that it’s not as futuristic as some of its competitors and that, at first glance, there isn’t anything to set it apart.

The front sports a classic Lexus 'spindle' grille and the external lights are large but the rear side lights jut out rather severely, reminding me too much of its Toyota counterparts.

The rear features a cool LED strip light for the brakes, which elevates its night-time presence.

The sporty-looking 18-inch alloy wheels are a nice touch but the plastic mouldings around the base of the car detract from the premium-level this model sits in. It’s not as slick-looking as it could be.

Having said that, the interior earns back points courtesy of its premium feel with leather-accented trims and Japanese Washi paper influenced accent panels. But there is a lot happening with the dashboard.

It’s a little overwhelming at first because it protrudes well into the cabin and features multiple cutaways, but you get used to it after a while.

There are also little knobs on either side of the instrument panel that look out of place to me and resemble horns.

Inside the GLC63 is clearly a derivative of the rest of the range, with its C-Class-inspired design and layout, but there’s enough AMG-specific elements to ensure it looks and feels special. This starts with the AMG steering wheel, which comes not only with a thick rim wrapped in Alcantara, but also some AMG special dials to adjust the various performance settings for the powertrain, suspension and transmission.

Then there are the AMG-specific seats, which look good and offer good support for the driver and front seat passenger. The rear seats offer decent space for what is a mid-size SUV, with room enough for two adults or teenagers or three smaller kids.

Those in the back aren’t particularly well looked after though, with only rear air-con vents and small door pockets but no USB charging ports or other small item storage.

The boot is 590 litres, down from 620L in the rest of the range, thanks to the addition of the rear-mounted electric motor. There’s also no room for the temporary spare the rest of the GLC range gets and instead you have to make do with a puncture repair kit.

As soon as you slide in, you’re reminded that the UX is a small SUV. Even with the driver's seat at its lowest position I still knock my knees on the steering wheel when getting in and out of the car.

The higher door sills also accentuate the penned in feeling despite there being plenty of head- and legroom in the front row! 

Then comes the back seat, which is super tight on space. I’m 168cm (5'6") and my headroom is fine but the legroom sucks. My knees press into the back of the driver’s seat (set for my driving position).

There’s also not a lot of space underneath the seat for toes, so I wouldn’t recommend the UX to anyone who regularly transports tall passengers. 

Having said that the seats in both rows are very comfortable and the leather trims feel lovely to touch. Both front seats are electric with heat and ventilation functions but only the driver’s side enjoys adjustable lumbar support. 

Storage is good throughout the car, which is not usually the case for the small SUV class. Up front you get a glove box, two cupholders, two drink bottle holders and a middle console that opens from both sides, which is handy and cool.

In the rear you get two cupholders in a fold-down armrest and map pockets but no storage bins in either door unfortunately.

Other amenities in the back are very good for this class with the heated outboard seats, directional air vents, reading lights and two USB-C ports.  

On that note, the upgraded multimedia system is now easier to use while on the go, is responsive to touch and looks great.

Some of the information on the system can be annoying to find but the customisations available on the 7.0-inch digital instrument panel more than make up for it.

There is a coloured head-up display, wireless Apple CarPlay, wired Android Auto and satellite navigation.

All are easy to use and won’t confuse you too much!

The charging options are great with each row getting two USB-C ports but the front also gets a USB-A port, 12-volt socket and a wireless charging pad. You’re seriously spoilt for choice.  

The boot space sits at a small 314L, which is 100L less than the previous model but that’s because Lexus has made a little storage nook underneath the floor for the tyre repair kit and cable pouches.

It's a great boot because it sits high and is easy to access, and I have plenty of room for all of the gear needed for a week’s errands. The hands-free powered tailgate is great, too.

There are only two variants for the electric UX and our test model is the top-spec Sports Luxury but the gear isn’t the only thing that’s been upgraded. The before on-road costs price for this model has jumped by almost $7K to a hefty $87,665!

In comparison, the BMW is the nearest rival at $84,900 (MSRP) and the Mercedes-Benz is a bit more affordable again at $82,300 (MSRP) while the Volvo sits pretty at $76,990 (MSRP).

The UX300e is the most expensive but is well-specified by anyone’s standards.

The Sports Luxury grade maintains its premium features, like the sunroof, heated front and rear outboard seats, ventilated front seats, and a heated steering wheel.

But the technology has been retooled and a new 12.3-inch touchscreen multimedia system replaces the previous model's 10.3-inch touchpad arrangement. It’s a welcome addition as it’s much easier to use.

New features, like wireless Apple CarPlay, acoustic front glass and insulation around the bonnet and wheel wells provide additional on-road comfort and practicality.

Lexus also throws in an AC Type 2 charging cable, as well as a GPO (General Power Outlet) cable. The technology is robust but I’ll go into more detail in the Practicality section.

Other standard features are solid with 18-inch alloy wheels, a tyre repair kit, handsfree powered tailgate, full suite of LED exterior lights, 10-way electric driver’s seat and an eight-way electric front passenger seat (but only the driver enjoys adjustable lumbar support).

The leather-accented trims feel luxy and the steering wheel has mounted controls and paddles to customise the regenerative braking while on the go.

This is what lies at the heart of the AMG GLC63’s success or failure. As I mentioned at the beginning, the previous generation’s 4.0-litre twin-turbo V8 has been replaced by an F1-inspired plug-in hybrid powertrain.

But don’t think that means AMG is suddenly focused on efficiency over performance. When AMG says the powertrain is inspired by the brand’s success in Formula 1 racing, what it means is the battery and electric motor provides a significant performance boost to support the internal combustion engine, not just save fuel.

To that end the combination of the turbocharged 2.0-litre four-cylinder petrol engine and the rear-mounted electric motor produces an impressive 500kW and 1020Nm. That’s a massive jump over the 375kW/700Nm made by the outgoing V8.

The UX300e has a fully electric powertrain with a 72.8kWh lithium-ion battery that’s located on the front axle.

The power and torque remain unchanged at 150kW and 300Nm but that’s enough to produce a 0-100km/h sprint time of 7.5-seconds. Plenty of oomph for city-slickers and open-roaders to boot.

The update sees the battery increase in capacity by 34 per cent which means the driving range has jumped from 305km to 440km.

That's still a bit lower than some of the UX's competitors but it certainly helps ease range anxiety! And unlike some of its rivals, the UX300e only sports a front-wheel drive drivetrain.

Mercedes makes no secret that the battery is designed for performance, not saving fuel. It only has a 14km EV range but can recharge quickly on the move to provide a power boost when needed.

But despite all that, the GLC63 is actually significantly more fuel efficient than the old V8, using a claimed 7.3L/100km, which is a massive 4.9L/100km improvement over the old model. Although, on our day-long test drive we didn’t manage to come close to that claimed figure and instead saw returns around 11L/100km, albeit after a lot of spirited open-road driving.

My energy consumption sat at an average of 19.5kWh, which is decent considering all of the open-road driving I did.

There are four levels of regenerative braking to help conserve battery percentage but even on the firmest setting, it’s not super noticeable.

When you’re at full charge, multiple notifications and sound alerts pop up on the instrument panel stating ‘Regenerative Braking Limited Press Brake to Decelerate’. It’s quite an intrusive feature but disappears after 20 to 30km.

Despite the bigger battery size, the UX300e can only accept up to 6.6kW on AC charging, whereas, all of its rivals can accept 11kW. On a 240-volt AC charger, expect to see a charge time of nine and a half hours to get to 80 per cent.

Curiously, the UX features two charging ports, on the right-hand-side, there is a Type 2 port and, on the left, a CHAdeMo port, which allows for faster charging.

You'd think it would be easier to simply add the CCS enhancement on the Type 2 port but still, expect to get from 10-80 per cent in 80-minutes on a 50kW fast charger.

Anyone who still believes in the adage ‘there’s no replacement for displacement’ hasn’t driven a modern turbocharged and hybridised engine. The GLC63 is a demonstration of the metaphorical and literal power of modern technology, combining an extremely efficient and potent internal combustion engine with an electric motor to make enormous real-world performance.

To be blunt, the GLC63 feels like a rocketship out of corners, launching with a ferocity and relentlessness the old V8 simply can’t match. It shouldn’t come as a surprise, a mid-size SUV with 1020Nm was always going to have plenty of performance, but even so it’s a shock to the system every time you give the GLC63 full throttle. Officially AMG claims it takes just 3.5 seconds to run 0-100km/h and has an electronically limited top speed of 275km/h - mighty impressive figures for a five-seat mid-size SUV.

To help get all that torque to the road, AMG deploys torque distribution technology that allows for it to be split an even 50/50 front/rear all the way to 100 per cent to the rear tyres.

Other technologies deployed to enhance its handling include AMG Ride Control suspension with adaptive damping and rear-axle steering. There’s also eight AMG Dynamic Select driving modes and four AMG Dynamics settings (Basic, Advanced, Pro and Master), so it’s a complex vehicle that is designed for the enthusiast.

While it’s easy to drive around town, once you get out on the open road you can really get a sense of the GLC63’s performance potential. Beyond just its powertrain the suspension offers good body control and the rear-axle steering helps it feel agile and responsive. 

It’s not perfect though. At times the complexity of the system does lead to some hesitation when you put your foot down. It certainly lacks the linear power delivery of the old V8 and makes for a slightly trickier driving experience at times.

As for the sound, which is one of the biggest elements missing from the V8, Mercedes has added AMG Real Performance Sound, which features a pressure sensor in the exhaust that picks up on the engine note and plays it through the speaker system. It certainly helps make for a louder, more noticeable engine noise, but it still sounds more like an A45 than the previous GLC63 and for many would-be buyers, that’s a major turn-off.

The UX300e comes into its own when you’re zipping around tight city streets. The power is responsive and the steering crisp with excellent cornering capabilities.

It feels well-placed on the road most of the time but can move around when it gets hit by high winds.

While the power is steady, the tyres can lose a little traction if you’re too quick to accelerate from a full stop.

The ride comfort is also very good with the new acoustic glass and extra insulation around the bonnet and wheel wells providing a whisper quiet cabin space.

The suspension is well-cushioned but not floaty and you won’t wince when you hit a bump, but occasionally you get a thump-thump shudder through the frame on certain rough road surfaces.

It’s not a massive size and you’ll be thankful for that when it comes time to park because it is seriously easy to slide into a spot!

The 360-degree view camera system is top-notch providing clear graphics and a cool feature where the car becomes invisible in the video feed, which makes it even easier to see all around you. Coupled with the front and rear parking sensors, you’re set.

The UX300e has a bunch of great safety features that come as standard and I like the proximity alert that pops up a camera feed of your surroundings when you’re in stop/start traffic. It’s a practical feature to help identify pedestrians or cyclists in your blind spots.

Other standard safety equipment includes forward collision warning, blind-spot monitoring, daytime running lights, rear cross-traffic alert, lane keeping aids, lane departure warning, adaptive cruise control, intelligent seat belt reminders, traffic sign recognition, an SOS call button, and that awesome 360-degree view camera system.

Family-friendly features include two ISOFIX child seat mounts on the rear outboard seats plus three top-tethers but two seats will fit best.

The UX also has a rear occupant alert if it detects weight or seat belts in use in the back seat, which is always a great feature.

The UX has a maximum five-star ANCAP safety rating from testing done in 2019. It also has eight airbags, which includes knee airbags for both front occupants.

The GLC63 is covered by Mercedes Australia’s usual five-year/unlimited kilometres warranty.

As for maintenance, Mercedes offers service plans, spanning three to five years. Three years will cost you $5025, $6455 for four years and five years is priced from $7180. Servicing intervals are 12 months or 20,000km, whichever comes first.

The UX comes with a five-year/unlimited km warranty but the battery is covered by a 10-year or up to 160,000km warranty, which is better than most in this class.

This also comes with a five-year capped-priced servicing plan where services cost a flat $295, which is good but the servicing intervals are more in line with a fuel-based car at every 12-months or 15,000km, whichever occurs first. It’s typical to see intervals stretched out at every two years for an EV.

Lexus also throws in a few sweeteners for owners with three-year complimentary subscriptions to both ChargeFox and Lexus Connected Services, as well as, installation of an at-home wall charger. It’s not often you see the word ‘complimentary’ coupled with a luxury brand, so that’s a nice touch.