Lexus UX250H vs Mercedes-Benz CLA-Class

What's the difference?

Most cars get worse as they age as their makers try and save pennies by scrimping on quality and features. But the reverse seems to be true for the Lexus UX.

The 250h Luxury 2WD we tested is the car that the brand should have launched with back in 2018, with an appealing balance of performance and economy, comfort and sporty handling, as well as refinement and features. The UX has finally come of age.

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.

A hefty portion of the UX’s engineering underneath is shared with the popular Toyota C-HR. Not that you would necessarily know that by glancing at it.

Even five years on from launch, the current model looks slick and contemporary, and it seems to have informed the styling of newer, larger Lexus SUVs like the latest NX.

Not that you’d call the UX an SUV – it’s very much a higher-riding hatchback, with a ho-hum 160mm of ground clearance.

To put that in perspective, other crossovers are taller: the GLA has 213mm, while Subaru’s new Crosstrek boasts 220mm. At least the UX’s is loftier than the C-HR and its pitiful 137mm.

That said, the angular wheel arches and wide-track stance serves the Lexus well.

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’s compact crossover-esque hatchback proportions have implications inside. Inevitably, this is no larger than the (related) Toyota Corolla, despite having the higher seating position.

Beyond that, though, the 2023 model highlights how Lexus has made its so-called ‘gateway’ model better than before.

For starters, despite being the base grade, this UX has a properly premium ambience, backed up by exceptional fit and finish.

From a sensory perspective, the UX looks, smells, feels and sounds like a Lexus should. And by the latter, we mean the cabin is pleasingly isolated from the outside world.

The overhauled touchscreen and multimedia system is a huge step forward for the series. The larger new display looks great and works well – what a monumental improvement over the infuriatingly fiddly old set-up. It’s difficult to see how they’ll improve it. Dependable and glitch-free. Are you listening, all European manufacturers?

Meanwhile, the carryover parts that worked well enough before continue to impress.

The UX’s front seats are sumptuous in their cushy softness and comfort, yet provide sufficient support over longer driving distances.

There’s also the excellent driving position, with most switchgear within grasp. There’s just enough space for taller people to settle in nicely up front. And the basics like ventilation and storage are thoughtfully executed. The climate in the UX is always fine.

Negatives? Don’t worry, we’ve identified several.

As mentioned earlier, the now-better-equipped Luxury does have all the essentials. But for a car that’s approaching $60K-drive-away, we’d expect kerb-side mirrors that dip down when reversing to avoid damaging alloys against gutters; we couldn’t get ours to auto-fold when locking up, either.

Driver vision out isn’t great. Thick pillars and that rising shoulder line make changing lanes and reversing a technology-reliant affair, as it’s difficult to see objects that are too-easily obscured. For the same reasons, a front camera would be useful in this grade.

Others might expect a sunroof, or cooled seats that massage, or a head-up display for the instrumentation, but we’d argue that they’re hardly necessities. Lexus has to upsell buyers to something.

Moving on to the back-seat area betrays the UX’s compactness most.

The back doors have small apertures. Entry/egress is challenging for folk with long legs. Legroom is tight, and three adults abreast would be a struggle, so it’s best to treat the littlest Lexus crossover as a four-seater.

Yet headroom is fine, the appearance and finish remain first class as it is up front, and the basics are all present – air vents, grab handles, coat hooks, overhead lighting, one map pocket, centre armrest with cupholders, two USB outlets, and windows that wind all the way down. Narrow front seats aid with light, vision and ambience, too.

Further back, the luggage area is pretty petite for an SUV, though the boot is (slightly) larger than the Corolla and Mazda3’s. That powered tailgate is useful if your arms are full, but the loading lip is high.

Normal boot floor depth is shallow but most of that flooring can be removed to reveal a hidden compartment underneath.

Small side pockets are also useful. You’ll find a 240V outlet. Bag hooks and floor tie-down hooks are fitted.

And – being a hybrid – there’s no spare wheel, just a tyre inflation kit. And the flimsy cargo cover is there only to keep prying eyes out.

Not big on utility, then, but the UX is true to its role as a Lexus in concentrate form.

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 UX’s Corolla/C-HR connection continues with its 2.0-litre (1987cc) twin-cam four-cylinder petrol engine, delivering 107kW of power at 6000rpm and 188Nm of torque between 4400 and 5200rpm.

The 250h Luxury pairs that with an 80kW/202Nm permanent magnet motor and 1.4kWh Ni-MH battery, for a combined power output of 135kW. A second, rear-mounted motor is available in higher grades, providing all-wheel drive. But not in this Luxury guise.

As with most Toyota and Lexus hybrids, charging is only via the petrol engine and recuperated energy from braking. Electric-only drive is only offered during brief spells of low-speed light-throttle driving, or off-throttle coasting where conditions allow.

Drive is sent to the front wheels via an electronically-controlled continuously variable transmission (CVT). Three modes are offered – 'Eco', 'Normal' and 'Sport'.

Tipping the scales at 1625kg (kerb), the 250h Luxury offers a power-to-weight ratio of nearly 83.1kW per tonne. That’s a hefty output for a hybrid. Top speed is 177km/h, with 0-100km/h needing 8.5 seconds.

Underpinning that performance is a MacPherson-style strut-front and a multi-link rear suspension set-up.

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.

Officially, the 250h averages an impressive 4.5 litres per 100km on the combined cycle, which is just 103 grams per kilometre of carbon-dioxide emissions.

Now, out in the real world, with plenty of inner-city and urban driving as well as a spell of fast highway runs punctuated by some very heavy-footed acceleration, we managed just under 7.4L/100km pump-to-pump.

That’s not too bad given how hard our UX was caned. The trip meter showed 5.6L/100km over the same distance (nearly 400km).

This is one Lexus hybrid that will happily sip from the standard 91 RON unleaded petrol pump. With a fuel tank capacity of a smallish 43 litres, expect a range of between 930km and 1000km.

For a luxury small crossover, these are economical figures.

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.

Before driving the 2023 UX250h hybrid, there was some trepidation.

All versions of the original series from 2018 were tested previously, and in every one bar the base 200 on small wheels and tyres, none lived up to the promise of a premium Lexus crossover. A harsh ride, excessive noise intrusion and dull handling made this model a disappointment.

That’s all in the past, thankfully, thanks to a sustained program to save the UX from mediocrity. The company really got the basics wrong the first time around with the horrid CT200h predecessor back in 2011, so we imagine that it would be damned if this was going down the same sorry path again.

In the 250h Luxury, as reviewed here, it is difficult to objectively fault the way everything works and drives.

Let’s start with performance. Even in Normal or Eco mode, the UX steps off the line briskly, and initially at least, it’s the electric motor and battery that silently whooshes the car forward.

If you’re gentle, you can reach speeds of up to about 40km/h before the petrol engine chimes in unobtrusively.

Beyond that, there’s a stream of electric power you can feel, keeping the acceleration coming on strong, even as speeds rise above 100km/h.

This is also true for Sport mode, except that it all happens a bit quicker and earlier, and with extra urge.

And the welcome news here is that the CVT doesn’t really make the engine sound too droney, unless the driver is mashing the pedal to the metal.

Travelling along at normal urban speeds, there’s a seamless transition from electric-enhanced petrol propulsion back to electric-only if the conditions are right – such as when coasting off-throttle.

This is most common in heavier traffic, and the resulting smoothness and quietness adds to a refined and relaxed experience.

About our only objection is when you apply the brakes. In our test car, they felt a little on/off, like a switch. At times, they seemed too grabby for smooth stopping.

That said, the driver can downshift using the gear lever to provide powertrain braking, to help minimise snatchiness.

Road noise seems to be more muted than before, supporting Lexus’ claims that retuning the suspension and beefing up the structure/chassis has helped with refinement.

We wouldn’t say the UX is at the top of the class for quietness, especially on Australia’s coarse-bitumen highways, but now things have hushed sufficiently enough for a crossover purporting to be a premium.

Where the suspension changes really transform the UX, at least on the 215/60R17 tyres the Luxury wears, is how much softer and comfier the ride is.

Where before there was suddenness there’s now suppleness, substantially improving the experience. We wonder whether the bigger-wheeled rubber the richer grades receive are as well-resolved.

As the 250h Luxury is not trying to be a hot hatch, the resulting body lean through fast corners is a happy trade-off, though it’s not so roly-poly that handling composure is adversely affected.

Plus, the steering – while light and easy at parking speeds – still offers enough response and feedback for most drivers to enjoy taking the UX for a cross-country blast once in a while.

To that end, the steering’s weighting does increase in Sport mode… though you won’t be selling your Peugeot 205 GTi for one just yet, but that previous dullness is history. In fact, whether behind the wheel or ensconced in one of the inviting outboard seats, the UX250h as a whole is a much sunnier experience all-round than before.

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.

Lexus offers a five-year/unlimited kilometre warranty and roadside assistance.

Service intervals are at 12 months or 15,000km.

The first three scheduled services are capped at $495 each, with the work carried out detailed online.

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.