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What's the difference?
Think of a Mercedes-AMG and the first words that spring to mind are probably not - understated, efficient and restrained. And yet those are probably the best words to describe the all-new C 43.
Of course, before we go any further it’s important to note that the C 43, even in its previous six-cylinder guise, was never meant to be as wild, raucous or powerful as the C63 flagship - that’s simply not its role in the AMG line-up.
But even so, this new model is a dive into fresh territory for the brand and puts a very different spin on the AMG sports sedan as we know it.
This is a four-cylinder model, complete with a Formula One-derived electric turbocharger, so it lacks the sound and fury you expect from something carrying the ‘AMG’ badge - but that doesn’t mean it’s a bad car, as we’ll explain.
After teasing us with the S3, all-wheel-drive version of its A3 sedan and hatch (Sportback in Audi-speak), Audi has finally given us the full-fat, RS3 variant of the same car. Any time you see an `R’ and an `S’ on the badge of an Audi, you know it’s the full nine yards in terms of all-wheel-drive grip and engine performance. And the RS3 is no different.
The power is enormous, the grip prodigious and the attitude is way tougher than any other A3 variant. It’s also well equipped, safe and nicely put together. But is that extra `R’ worth the added price of admission? And is this more Audi A-Series than you really need?
The other question is, given that the S3 is such a resolved package with its own shot of high-performance, do the numbers stack up for the RS3 version? How much is too much?
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.
If conventionally powered cars really are on the endangered list, it’s vehicles like the Audi RS3 that will remind us what we’ve lost. There’s so much fun to be had in this car, that you really need to take it to a track to tap into it safely and responsibly. And there’s the rub.
While there’s no doubting the RS3’s potential, neither is there any doubt that the driveline absolutely dominates the experience. In fact, we reckon the S3 with its more modest (but still ample) performance and friendlier nature is probably the smarter car for the everyday. It’s also cheaper by about $20,000 and while it lacks the aggressive looks, it’s still a charming car. Perhaps all the more charming for its easier-going nature and balance of abilities.
So why buy the RS3? Because it’s the one that will keep you entertained for longer if you’re a serious enthusiast driver. But if you don’t plan to use the car for track days, there’s a strong argument that the RS3 is way more car than you’ll ever need. Of course, that sentiment never stopped performance-car lovers, did it?
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.
While the overall shape of the RS3 suggests evolution rather than revolution, the RS3 treatment has led to a much sportier look. We still reckon the sedan is the pick of the two body styles, mainly because it looks a bit more aggressive. Certainly, though, an aggressive look is not something either version backs away from, and those deep, wide blacked-out honeycomb grilles front and rear give the thing lots of presence.
So too do the blistered fenders, allowing for the extra track width that gives the RS3 its unique footprint. The front track itself is 30mm wider, but the wider fenders also gave Audi the chance to do some creative aero-management. Unlike, say, the Toyota Supra, for instance, with its faux vents up each side, the RS3’s lower-front vents and aero-slits behind each front fender are fully functional, directing air into the engine bay and away from the brakes respectively.
Another really neat function is the LED daytime running lights’ one-act play when you unlock the doors. As the car unlocks its doors, the LEDs spell out `R’, `S’ and `3’in sequence. Blink and you’ll miss it, but it’s a lovely touch that some manufacturers will never understand.
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.
Like the rest of the Audi A-series range, the RS3 is available in two body styles, a five-door hatchback and a four-door sedan. The five-door hatchback layout is the most practical of the two RS3 layouts, but both feature plenty of front-seat space and a rear seat that folds 40:20:40.
Paddle shifters are mounted on the steering wheel rather than the column, so they move with the wheel. That can make it difficult to select the correct paddle in a hurry with lots of lock applied.
The Drive modes are operated by a switch low down on the centre-stack that is clearly designed for left-hand-drive cars. It’s too far from the driver and needs to be cycled through in one direction, rather than being able to select the next mode or the previous one.
Beyond that, the interior is a lesson to other car-makers on how to get an interior right. There’s a quality look and feel with the possible exception of the plastic trim below the passenger-side air-vents which looks and feels a bit cheap. There are plenty of cup-holders and cubbies around the cabin with two USB plugs in the front and two in the rear (for charging).
The RS3 loses some space compared to the regular A3 because of the performance hardware. Where the hatch can take 282 litres with all seats in place (1104L with second row stowed), the sedan can swallow 321 litres.
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.
What you’re buying here is not a car in a different size or luxury category compared with its S3 and A3 stablemates, but a car with a much broader performance envelope. So it’s no surprise to learn that a lot of the extra money goes into that type of hardware.
So rather than the class-standard four-cylinder engine, the RS3 gets a five-cylinder engine measuring 2.5 litres and enough performance to challenge many a supercar of just a handful of years ago. That philosophy also requires bigger brakes, firmer suspension and a more complex, track-oriented version of the electronic rear differential that can turn the car into a drifter or a race-track hero. Wheels and tyres are competition-spec, too.
In turn, those changes have forced other alterations such as the wider fenders and more intricate body kit, the former to physically fit the tyres, the latter to control air-flow for high-speed stability and for thermal management.
Other RS3 additions to what was an already well-equipped car in the S3, include lots of Audi’s trademark honeycomb styling panels around the car, RS3 puddle lighting, LED headlights and daytime running lights, carbon and aluminium interior inlays, RS sports seats with four-way lumbar support and a massage function.
There are two USB ports, wireless phone charging, another pair of USB ports in the rear, Bang and Olufsen stereo, head-up display, tinted glass, heated, folding exterior mirrors and Nappa leather throughout the interior. There’s also Android Auto, a wireless version of Apple CarPlay and digital radio.
The RS3 uses Audi’s celebrated virtual cockpit display with a choice of display layouts for the driver as well as a 10.1-inch touchscreen to control all the connectivity and infotainment settings. It uses the latest version of Audi’s MMI interface.
Like the other A3-based Audis, there’s a price premium for the sedan body over the hatchback, making the five-door RS3 a $91,391 purchase against the sedan at $93,891. Compared with the S3 CarsGuide tested earlier this year, that represents a pretty big jump from that car’s $70,700 (hatch) and $73,200 (sedan). That said, there’s a fair bit more going on in the RS3 in every department, but you get the sense that this comparison will be one nearly every potential buyer will make.
Like most Audis, there’s a range of optional packages, starting in the RS3’s case with the Carbon Package which brings carbon-matte inlays to the interior, side skirts, exterior mirrors and a carbon roof spoiler for the Sportback and a carbon roof-lip spoiler for the sedan. That costs $7400 on the hatch and $6300 on the sedan.
The Matte Aluminium Package is next with a few trim pieces finished in an aluminium material for $2000 extra and there’s also a panoramic sunroof on offer for $2600.
The RS Design Package gets you an Alcantara-covered steering wheel, seat belts in green or red as well as coloured elements to the seat shoulders, floor mats and the air-vent highlights. Yours for $2150.
The most serious option is the RS Dynamic Package which brings carbon-ceramic brakes with a choice of caliper colour as well as an electronic reflash to bring the top speed of the RS3 to 290km/h from its standard (limited) 250km/h. That adds another $13,000 to the price.
One thing that’s nice to see is that Audi has made even the pearl and metallic colours a no-cost option on the RS3. Other manufacturers should take note.
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.
While the five-cylinder engine is more or less a carry-over from the previous RS3 model, the end result is still a pretty stunning one. With 2.5 litres of capacity, the turbocharged unit accounts for 294kW of power (the same as the previous model) and 500Nm of torque (up 20Nm).
The transmission is a seven-speed dual-clutch unit that is quite a familiar sight around Audi by now, and the all-wheel-drive system uses a centre differential with an electronic clutch-pack on each rear axle to give the car a Drift mode (although Audi insists you don’t refer to it in those terms) as well as torque vectoring with the ability to shift 100 per cent of rear-axle torque to the either wheel to maximise grip.
There’s now also an RS-specific exhaust system with an active flap to increase or tame exhaust noise according to which drive model is selected. The drive modes themselves stretch form Comfort to Auto to Dynamic, altering shift points, gear-shift aggression, throttle response and suspension firmness as well as that exhaust flap.
Brakes are enormous 375mm front rotors with six-piston calipers, that hardware forcing the fitment of a 19-inch alloy wheel (specific to the RS3) for brake clearance.
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.
Audi’s official combined fuel consumption figure for this car is 8.3 litres per 100km. Obviously, start using all that power and torque and that figure will grow significantly. Based on that, the car emits 190 grams of CO2 per kilometre, and with the 55-litre tank (which looks a bit small on paper) the range should still be around 600km between fill-ups.
The only catch with that is the high-tech nature of the engine means it requires the more expensive, Premium ULP at the bowser.
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.
First impressions are that this is a typical Audi in the way it fits together beautifully and is made from quality materials. The ergonomics – particularly the virtual cockpit - are spot on and it even smells like an Audi. Noise is well suppressed, the controls feel quality and the front seats are comfy. But from there, the overarching view is dominated by that powerhouse of an engine.
This isn’t just a quick car, it’s actually brutal in the way it builds boost almost immediately and then hurls the car down the road. To be honest, it’s almost too much, and the way the RS3 reels in the horizon will leave some drivers ignoring other sensory inputs in order to keep up with the car. Brutality breeds brutality, too, and the subsequent steering and braking inputs required when the throttle is pinned will not always be the considered, gentle type; they’ll often be gut reactions.
Thankfully, the rest of the driveline and platform has the smarts to make all this work. There’s awesome grip from the Quattro all-wheel-drive system and the car stays flat and steers in a fast, neutral but pin-sharp way. The dual-clutch transmission feels perfect for the engine, too, with ultra-quick shifts that become more aggressive as you ramp up the drive modes. Ride quality is good but we reckon there’s less bandwidth in the various drive mode settings than exists in the same system fitted to the S3 model we drove a few months ago. While the latter offered a broad range of suspension firmness, the RS3 seems to be a bit of a prisoner of its own performance, with Audi leaning all the drive modes towards a firmer setting in the name of body control.
That’s supported by Audi’s decision to offer us some race-tack laps in the RS3 to safely explore its high-end tendencies. At this point, the car emerges as a proper track-day proposition, all that power and control blending into a car that loves being thrown around a circuit. Perhaps the front seats could do with a little more side bolstering at track-cornering speeds, but overall, it’s clear that the RS3’s brief does, indeed, include a degree of race-track use.
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 RS3 hasn’t been crash-tested locally, but the A3 on which it is substantially based has been and scored five stars back in 2020. The caveat there is that that result related to the lighter front-wheel-drive version of the car, not the RS3’s all-wheel-drive variant.
The RS3 is well equipped from a safety perspective with seven air-bags including a head-level curtain airbag that protects occupants in both the front and rear seats. There’s also Audi’s Pre-Safe which closes the windows and sunroof and pre-tensions the seat-belts if the car thinks a shunt is imminent. In the RS3’s case, that program has been extended to include autonomous emergency braking which works at speeds up to 250km/h and can identify pedestrians and cyclists up to 85km/h.
There’s also a tyre-pressure monitoring system, lane-change warning, rear cross-traffic warning, lane departure warning with active intervention of the steering, parking cameras front and rear, park-assist, and a 360-degree camera system with various points of view.
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.
Service intervals for the RS3 are every 12 months or 15,000km, whichever comes first. Audi offers capped-price servicing for the RS3 at $3580 which covers servicing costs for the first five years.
The car is covered by Audi’s five-year/unlimited kilometre warranty. The vehicle is also protected against body-rust perforation for 12 years.