Alfa Romeo 4C vs Mercedes-Benz CLA-Class

What's the difference?

People might wonder if there’s a reason to buy an Alfa Romeo 4C. It has some great dollar-for-dollar competitors - the Alpine A110 does most of the things the Alfa does, but in a more polished way. And then there’s the Porsche 718 Cayman, which is a considerably more, well, considered option.

But there is no doubt the 4C stands alone, a sort-of cut-price alternative to a Maserati or Ferrari, and nearly as rare to spot on the road as those cars, too. And just like the rollercoaster at Luna Park, it’s the sort of car that’ll leave you wanting another go.

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.

Slap a Ferrari badge on it, and people would think it was the real deal - a pint-sized performance hustler, with all the right angles to get plenty of glances.

In fact, I had dozens of punters nod, wave, mount ‘nice car mate’ and even a few rubber-neck moments - you know, when you drive past and someone on the footpath can’t help but forget they’re walking, and they stare so hard they might well collide with the upcoming lamp-post. 

It really is a head-turner. So why does it only get an 8/10? Well, there are some elements of the design that make it less user-friendly than some of its rivals.

For instance, the step-in to the cabin is enormous, because the carbon-fibre tub sills are huge. And the cabin itself is pretty tight, especially for taller people. An Alpine A110 or Porsche Boxster are much more amenable for day-to-day driving… but hey, the 4C is markedly better than, say, a Lotus Elise for ingress and egress.

Also, as smart as it still looks, there are elements of Alfa Romeo design that have moved on since the 4C launched back in 2015. The headlights are the bit that I dislike most - I had a real thing for the spider-eyes lights of the launch edition model.

But even if it isn’t unmistakably Alfa Romeo, it’s unmistakably a 4C. 

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.

You can’t get into a car this small and expect a lot of space.

The dimensions of the 4C are tiny - it’s just 3989mm long, 1868mm wide and only 1185mm tall, and as you can see from the pictures, it’s a squat little thing. The Spider’s removable roof could be great for you if you’re tall.

I’m six-feet tall (182cm) and I found it to be cocoon-like in the cabin. You feel almost as though you’re tying yourself to the tub of the car when you get into the driver’s seat. And getting in and out? Just make sure you do some stretches beforehand. It’s not as bad as a Lotus for ingress and egress, but it’s still hard to look good clambering in and out of. 

The cabin is a cramped space. There’s limited head room and leg room, and while there is reach and rake adjustment for the steering wheel, the seat only has manual slide and backrest movement - no lumbar adjust, no height adjust… almost like a racing bucket. They’re hard like a race seat, too. 

The ergonomics aren’t terrific - the controls for the air-con are hard to see at a glance, the buttons for the gear select take some learning, and the two centrally-mounted cup holders (one for your double-shot mocha latte, the other for a hazelnut piccolo) are inconveniently positioned exactly where you might want to put your elbow. 

The media system is rubbish. It’d be the first thing to go, if I bought one of these, and in its place would be an aftermarket touchscreen which would: a) actually let you pair to Bluetooth; b) look like it was from sometime after 2004; and c) be more fitting for a car of this price tag. I’d upgrade the speakers, too, because they’re poor. But I can totally understand if those things don’t matter, because it’s the engine you want to hear.

The materials - aside from the red leather seats - aren’t great. The plastics used are similar in look and feel to what you find in second-hand Fiats, but the sheer volume of exposed carbon-fibre does help you forget those details. And the leather pull straps to close the doors are nice, too. 

The visibility from the driver’s seat is decent - for this type of car. It’s low, and the rear window is small, so you can’t expect to see everything around you at all times, but the mirrors are good and the forward vision is excellent.

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 Alfa Romeo 4C is powered by a 1.7-litre turbocharged petrol four-cylinder engine, which produces 177kW of power at 6000rpm and 350Nm of torque from 2200-4250rpm. 

The motor is mounted amidships, and it is rear-wheel drive. It uses a six-speed dual-clutch (TCT) automatic with launch control. 

Alfa Romeo claims a 0-100km/h time of 4.5 seconds, which makes it one of the quickest cars at this price point. 

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.

Claimed fuel consumption for the Alfa Romeo 4C Spider is rated at 6.9 litres per 100 kilometres, so it’s no miser.

But, impressively, I saw real-world fuel economy of 8.1L/100km, over a loop that included urban, highway and ‘spirited’ driving on twisty roads.

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.

I said that it’s like a rollercoaster, and it really, truly is. The air doesn’t quite rush through your hair as much, sure - but with the roof off, the windows down and the speedometer constantly edging towards licence suspension, it’s a real hoot of an experience.

It just feels so tight - the carbon-fibre monocoque chassis is rigid and super stiff. You hit a cats-eye and its all so sensitive, you could mistake it for having hit an actual cat. 

Alfa Romeo’s DNA drive modes - the letters stand for Dynamic, Natural, All Weather - is one of those proper examples of this type of system done well. There’s a marked difference between how these different settings operate, where some other drive modes out there are more sedate in their adjustments. There’s a fourth mode - Alfa Race - which I didn’t dare sample on public roads. Dynamic was enough to test my mettle. 

The steering in Natural mode is lovely - there’s great weighting and feedback, super direct and incredibly in touch with the surface below you, and the engine isn’t quite as zesty, but still offers tremendous response on the move. 

It’ll be a difficult choice between this and Alpine A110 and a Porsche Cayman

The ride is firm but composed and compliant in any of the drive modes, and it doesn’t have adaptive suspension. It is a stiffer suspension setup, and though the damping doesn’t change in Dynamic mode, if the surface is anything but perfect you will tram-track and twitch all over the place, because the steering feels even more dialled in. 

In Dynamic mode the engine offers amazing response when you’re at pace, building speed incredibly and before you know it, you’re in licence loss zone.

The brake pedal requires some firm footwork - just like in a race car - but it pulls up strongly when you need it to. You’ve just gotta get used to the pedal feel. 

The transmission is a good thing at speed in manual mode. It won’t overrule you if you want to find the redline, and it sounds tremendous. The exhaust is exhilarating!

With roof on and windows up there’s very noticeable noise intrusion - lots of tyre roar and engine noise. But remove the roof and drop the windows and you get the full effect of the drive experience - you’ll even get some "sut-tu-tu” wastegate flutter. It doesn’t even matter that much that the stereo system is so rubbish.

At normal speeds in normal driving you do need to be considerate of the powertrain because it is finnicky and slow to react at times. There’s notable lag if you’re gentle on the throttle, both from engine and transmission, and the fact peak torque doesn’t come on song until 2200rpm means there’s lag to contend with. 

It’ll be a difficult choice between this and Alpine A110 and a Porsche Cayman – each of these vehicles has a very different character. But for me, this is the most go-kart like and it is, undeniably incredibly involving to drive.

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.

If you’re hoping that a ‘simple’ car like the 4C will mean low ownership costs, you might be disappointed in this section.

The Alfa Romeo website service calculator suggests that over 60 months or 75,000km (with service intervals set every 12 months/15,000km), you will have to fork out $6625 total. For a breakdown, the services cost $895, $1445, $895, $2495, $895.

I mean, that’s what you get when you buy an Italian sports car, I suppose. But consider you can get a Jaguar F-Type with five years of free servicing, and the Alfa looks like a rip-off. 

The Alfa does, however, come with a three-year/150,000km warranty plan, which includes the same cover for roadside assist.

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.