Lexus UX vs Mercedes-Benz A-Class

What's the difference?

The updated Lexus UX300h Luxury is a solid entry in the premium compact SUV segment. It doesn’t break new ground, and there are areas that could be improved, but it handles well, offers a thoughtful selection of amenities for a base-grade luxury model, and its compact size makes it easy to park almost anywhere. For buyers seeking a stylish, efficient, and practical hybrid with a luxury badge, it’s a dependable choice.

The new AMG C 43 may lack the drama and excitement we’ve come to expect from the German performance brand, but that doesn’t mean it’s a bad car. Yes, it could be more extroverted and the ride could be improved, but this is still a sharp-looking sports sedan with loads of punch.

This is a car that speaks to its times, with ever-stricter emissions regulations making it harder and harder for car companies to produce loud, wild and charismatic cars. So Mercedes-AMG has worked within those boundaries and come up with a car that retains at least some of those core elements that has made the brand so desirable over the years.

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

The updated Lexus UX is technically a compact SUV, but it feels more like a hatchback that's taken a small dose of steroids. The facelift brings a sharper look with a stylised 3D spindle grille, new air intake vents, fresh 17-inch alloy wheels, updated daytime running lights and a full-width rear light bar. The sculpted bodywork still showcases Lexus’ signature origami-like panelling and, overall, it’s a handsome little thing. That said, the heavy use of black plastic moulding around the lower edges detracts from its premium appeal.

Inside, the cabin takes a more understated approach. Up front it feels premium-enough, with synthetic leather trims, soft-touchpoints and those high-tech dual 12.3-inch displays headlining the dash. Your eye moves smoothly across the layout without lingering too long on any single element, which adds to the sense of elegance.

Not everything feels top-tier, though. Hard plastics are still scattered throughout the cabin, and they’re especially noticeable in the back seat where the doors have very little in the way of a soft surface. Yes, this is the base grade, but in a car wearing a luxury badge, it’s something you notice more than you should.

Mercedes has created something of a problem for itself with its decision to introduce AMG styling packages for the majority of its range, including the C-Class.

It means the C 43 has to walk a fine line between looking like a unique AMG model, rather than just a C300 with a bodykit and not out-doing the C63.

To that end it has AMG’s now familiar grille with vertical bars, the unique and complex-looking 20-inch alloy rims and a small lip spoiler on the boot. But otherwise it is surprisingly understated for an AMG, lacking the more obvious and muscular stance of previous AMG offerings.

Inside, there’s a similar theme, with the typical Mercedes-Benz luxury appointments but with a sportier, AMG twist. The steering wheel is chunky and comes with AMG branding, metallic shift paddles and a pair of rotary dials/buttons that allow you to alter the various drive modes and settings.

The one on the right allows you to switch between the pre-set Comfort, Sport, Sport+ and Individual modes, while the one on the left can scroll between the various individual aspects to tailor the settings to the conditions.

In typical modern fashion the design is tech-laden, with a digital display for the instrument panel (that can be switched between various graphics) and a large, tablet-style central multimedia touchscreen that controls the majority of the car’s non-driving functions.

The UX is a compact SUV, so it's best not to expect a sprawling interior. The front row offers the best space and comfort, with wide door openings and a ground clearance that makes it easy to hop in without any grunts. The seats are comfortable enough on long drives, although some fatigue creeps in on the passenger side due to the lack of lumbar support. Both front seats are power-adjustable and heated, and with the steering wheel also adjusting electrically, it’s easy to dial in a good driving position.

Move to the rear seats, and space becomes noticeably tighter for adults. At 168cm, my knees press against the seat in front, and even my eight-year-old asked me to slide the passenger seat forward this week. That said, he’s been mostly comfortable thanks to the wide door openings, lightweight doors and well-padded seats.

My son did point out that the tall window sills make it hard to see out, which could be a deal breaker for younger passengers. There are three top tether anchor points, but fitting three child seats across is unrealistic.

Storage is on the slim side, but the dual-opening centre console is clever, and there are two cupholders and drink bottle holders up front. The rear row only gets a single map pocket and two cupholders. A few more cubbies for things like sunglasses or keys would be welcome, as the cabin can quickly feel cluttered if you’re not careful.

Technology is neatly integrated. The dual 12.3-inch displays look sharp with clear graphics, and the touchscreen is responsive. The updated operating system isn’t a big leap forward, but it’s easy to use and the wireless Apple CarPlay and Android Auto work seamlessly. There’s also sat nav, a wireless charging pad, four USB-C ports, a single USB-A port and a 12-volt socket for charging.

The boot looks modest at first glance, especially with the floor set in its highest position, but it still swallowed a big grocery shop with no fuss. Officially, capacity is 364 litres, which makes it the smallest compared to its nearest rivals, although the adjustable floor helps with taller items or creates a handy nook for smaller ones.

A bigger drawback is the lack of a spare tyre as you only get a repair kit. For city drivers that might be fine, but for those of us who live regionally or do longer trips, a spare tyre is a must-have. On the plus side, the powered tailgate with kick function is standard here, whereas rivals make you pay extra for it.

The new C-Class has grown slightly in size compared to the model it replaces, most notably with a 26mm increase in the wheelbase which you can feel in the cabin.

The front seat space is good, with excellent adjustability for the power-adjustable seats and steering column. I had no trouble finding my ideal seating position which makes for a more enjoyable and uncompromised driving experience.

Rear space is a bit tighter (which is typical for this segment/size of vehicle), but thankfully the standard seats do have very deep sculpting in the backs which allow for more knee space and foot room.

However, at approximately 180cm (six-foot), I wouldn’t like to sit behind my seating position for long periods as my knees were touching the seat back, and headroom is compromised with the panoramic glass roof.

In terms of small item storage there’s a lidded console box in between the front seats as well as a pair of cupholders and a small tray where you can place your mobile phone.

It’s worth noting, though, that early examples of the C 43 in Australia do not have a wireless smartphone charging pad, with that reportedly being introduced from February production.

While that’s good news, it’s not really competitive in this day and age to offer a car costing six-figures without such technology.

There’s also only a single USB-C power outlet in the front, which is another disappointment, but there is a pair in the back.

Mercedes does win some points back for a respectable 455-litre boot, which has a nice wide load opening that will make packing luggage easier.

We’ll get to the major change under the bonnet shortly, but another significant alteration for this latest C 43 is the price.

It now starts at $134,900 (plus on-road costs), which pushes it well above its market rivals, the BMW M340i xDrive and Audi S4, which start at $104,900 and $106,200, respectively.

However, Mercedes has added more technology under the bonnet and loaded the C 43 up with standard equipment, including its '4Matic' all-wheel drive system, adaptive damping, rear-wheel steering and 20-inch alloy wheels.

In terms of creature comforts, the C 43 is well-appointed, with leather upholstery, a head-up display, augmented reality navigation, a panoramic sliding sunroof, and a Burmester 3D surround sound system.

There are two option packages for the C 43. The 'Digital Light Package' costs $2400 and adds Multibeam LED headlights with 'Ultra Range' highbeam, 'Adaptive Highbeam Assist Plus' as well as active light function and cornering light function.

The 'Performance Ergonomics Package' includes AMG Performance front seats, an AMG Performance steering wheel in Nappa leather and microfibre and the 'AMG Track Pace' system for an additional $5200.

The UX300h Luxury runs a hybrid setup that pairs a 2.0-litre four-cylinder petrol engine with two small electric motors. Combined, the system produces 146kW of power, and it drives through an electronic continuously variable transmission (eCVT). This powertrain sees it outmuscle the old UX250h by 15kW.

On paper, those new outputs sit neatly in the middle of this segment. Out on the road, though, the hybrid assistance helps the UX feel a little more sprightly than the numbers suggest. The electric motors give it an eager step-off from traffic lights and smooth power delivery around town, while the petrol engine takes over when more effort is needed.

It's a good combination for a little car.

The biggest talking point about this new car is the engine, with AMG downsizing from the old C 43’s six-cylinder to a 2.0-litre four-cylinder turbocharged petrol engine.

But it’s not just any turbocharged four-pot, because it is fitted with technology that Mercedes claims has been inspired directly from its Formula One team.

While the F1 team engine facility is based in England, this engine was designed and developed by the Mercedes-AMG team at its Affalterbach headquarters, but the concept of the electric turbocharger reportedly comes from the engine that powered Lewis Hamilton to multiple world championships.

The electric exhaust gas turbocharger - to give it its official name - uses a small electric motor on the turbocharger shaft to spin up the blades without having to wait for any exhaust gases to pass through it first.

To power the electric turbo the C 43 is equipped with a mild-hybrid 48-volt electrical system.

Mercedes claims this means reduced lag and improved throttle response for a sportier driving experience. 

It also helps make this small engine produce big amounts of performance, with AMG extracting 300kW of power and 500Nm of torque from this 2.0-litre, which is more power than the previous six-cylinder C 43 managed.

The engine is paired to a nine-speed multi-clutch transmission, which isn’t a dual-clutch with a pair of clutches operating on every second gear ratio, but instead uses a “wet start-off clutch” for better take-offs and smoother shifting on the move (at least in theory).

Power is sent to the road via all four wheels thanks to Mercedes’ 4Matic all-wheel drive system.

Fuel efficiency is a real strength. Lexus claims 4.2L/100km on the combined cycle, which is impressive against petrol-only competitors. With a 43L tank, you’re looking at a theoretical driving range of over 1000km between fills.

In my week of mixed open-road and urban driving, I saw a real-world figure of 5.0L/100km, and that’s without holding back on using the available power, which makes the claim feel very achievable.

Despite the smaller engine you can hardly call the C 43 miserly, with a claimed combined urban/highway cycle rating of 9.1-litres per 100km. That’s only a 0.2L/100km improvement over the old six-cylinder.

On test, which included a return trip from Sydney to Bathurst via motorways and some dynamic back road driving, we saw a return of 11.8L/100km on the car's onboard computer.

While hardly hybrid-worrying, it’s impressive to think that driven modestly, such a potent engine can return a single-digit fuel figure.

The UX300h Luxury proves itself to be a versatile little SUV. It offers ample power with prompt acceleration, making it easy to confidently take a gap in traffic or keep pace on the open road. It feels like a solid all-rounder that balances everyday usability with just enough grunt when you need it.

There are three selectable drive modes, though in practice they don’t feel dramatically different. The hybrid system can sometimes sound a little flustered at times as it switches between the two components, but it doesn’t translate into anything unsettling from behind the wheel. The actual driving experience remains smooth and predictable.

Ride comfort is another strength. The suspension does a good job of soaking up small bumps, and unless you’re on the highway in torrential rain, the cabin stays impressively quiet.

Visibility is mostly good, although the A- and B-pillars can occasionally intrude from the driver’s seat. It’s never enough to be a deal breaker, but worth noting. Where the UX really shines is in tight spaces because its 10.4m turning circle and compact dimensions makes it stupidly easy to park. The reversing camera is clear, though for a car wearing a luxury badge, it feels like a missed opportunity not to include a 360-degree camera as standard.

Let’s start with the good news. The new Mercedes-AMG C 43 is a quick car. The engine may be small in size but the electric turbocharger does its thing and provides plenty of punch.

You can get a performance boost, too, thanks to the belt-driven starter generator, which acts as a mild hybrid and gives you a surge of 10kW for a brief period if you need a sudden burst of extra speed.

The chassis is well-sorted, too, at least from a dynamic point-of-view. The rear-wheel steering can provide up to 2.5 degrees of turning, which improves handling at speed and manoeuvrability when parking.

However, there are some less-impressive elements to the C 43, too. The obvious one is the drama, or rather the lack thereof.

As I said at the beginning, the C 43 has never been as wild or raucous as the V8-powered C 63, but when you buy an AMG there’s a rightful expectation that it will provide some thrills.

The C 43 simply doesn’t have that character about it. Yes, it’s fast, but it produces that speed with efficiency rather than excitement.

And it’s not an engine size problem, because even the 2.0-litre four-cylinder A 35 and CLA 35 offer more ‘wow factor’ than the C 43.

Yes, the engine makes noise under acceleration (and it can be altered between discreet and sporty) but even at its best it sounds muted and lacks the evocative tone of a V8 or six-cylinder engine. 

Another disappointment is the transmission calibration, with the gearbox awkwardly shifting out of first gear on multiple occasions during our test drive.

In the taller gears it felt smooth enough cruising along, but given its low speed shifts we’d like to spend more time in the urban environment before passing final judgement. 

The other notable element of the driving experience we struggled with was the ride quality. While fine on the smoother motorways, our test drive included time on some patchy country back roads and the C 43, even in the ‘Comfort’ suspension setting, was simply too firm.

Riding on low profile tyres, the adaptive dampers struggled to isolate the cabin from the imperfections in the road, leading to a fussy ride at times.

Overall the C 43 is a good car, but it feels like there are still some areas where Mercedes could improve it to make it really live up to the AMG badge.

The C43 gets a comprehensive list of safety equipment that leaves little out. Obviously there are the usual passive safety items, like 10 airbags, including dual-front combined pelvic/thorax airbags and a front centre bag that drops between the front seat passengers to minimise the chances of a head clash.

Also included as standard is autonomous emergency braking front and rear (covering speeds between 7.0-200km/h), adaptive cruise control with active stop/go, a 360-degree parking camera, 'Active Parking Assist', 'Active Lane Keeping Assist', 'Blind Spot Assist' and, of course, anti-lock brakes with 'Brake Assist' and 'Adaptive Brakes' with Hold function and electronic stability control.

Also included are dusk-sensing LED lights, rain-sensing wipers and run-flat tyres with tyre pressure warning.

The C43 also comes equipped with Mercedes’ 'Driving Assistance Package Plus', which adds even more safety gear. This includes 'Active Blind Spot Assist', 'Active Brake Assist with Cross-Traffic Function', 'Active Emergency Stop Assist', 'Active Lane Change Assist', 'Active Lane Keeping Assist', 'Active Steering Assist', and 'Active Stop-and-Go Assist'.

While the C43 hasn’t been specifically crash-tested, the latest C-Class was rated by ANCAP with a five-star score for all models except the upcoming C 63 S E Performance.

The UX300h Luxury comes with a five-year/unlimited kilometre warranty, which is comparable to its nearest rivals, although we’re seeing increasingly generous terms from mainstream brands.

Servicing is straightforward thanks to a five-year capped-price program, with each service costing $595. The intervals are well spaced at every 12 months or 15,000km, whichever comes first.

This grade also includes a three-year complimentary membership to the Lexus Encore program. Membership brings access to the Lexus Connected Services phone app, allowing you to customise your driver profile and even use a digital key. Beyond that, Encore members enjoy perks with supporting partners, including Westfield and Ampol.

There's around 40 official Lexus service centres located around Australia but you can make use of its sister brand's (Toyota) service centres if you're in a pinch.

The C 43 is covered by Mercedes’ five-year, unlimited kilometre warranty, which has become the new standard for the luxury car market.

Service intervals for the car are at 12 months/25,000km, which is on par with industry standard.

Mercedes-Benz Australia will offer a service plan for the C 43, prices were yet to be confirmed at the time of publication but the company has indicated it will be similar to the C300. 

That means $550 for year one, $900 for year two, the third service costs $1000 and the fourth year service costs $2450 - for a total of $4900 for the first four years of ownership.