Aston Martin DB12 vs Mercedes-Benz C43

What's the difference?

Typically when a car company makes a bold claim in their press release it's hyperbole designed simply to grab attention. But in the case of the DB12, Aston Martin truly has built something different than before, elevating it beyond its previous ‘Grand Tourer’ status.

While ‘Super Tourer’ may be a bit dramatic in name, this is a very impressive car across the board. It’s fast, fun, luxurious, comfortable, opulent, stylish and liveable, so while it may require a heavy financial investment, you are duly rewarded.

Plus you also get to pretend to be James Bond…

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.

Personally, I felt like Aston Martin peaked with its ‘DB’ design nearly two decades ago with the DB9. It was a masterpiece of simplicity, elegance and heritage and the subsequent DB11 just looked more fussy and complicated for the sake of being different.

The DB12 manages to correct that mis-step from the designers, getting back to the classic silhouette of an Aston Martin, maintaining the trademark elements (specifically the unique grille shape) and the elegance of simplicity.

Aston Martins don’t need to be attention-grabbing like a Ferrari or Lamborghini. Instead, they attract attention with an understated but unmissable presence that just attracts eyeballs. You don’t need to know anything about cars to know that the DB12 is a very expensive, luxury sports coupe - it says all that the second you get a look at it.

The interior of DB12 looks and feels every bit as prestigious as the exterior does. High-quality materials have been used throughout and there is a level of fit and finish that elevates beyond most other cars on the market. It feels like a hand-made car, built with patience and detail, rather than something rushed down a production line.

The cabin design itself manages to feel both classical and modern, in the same way the exterior takes inspiration from Aston Martins of previous years but gives them a 21st century update.

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.

Inside Aston Martin’s designers have understood the typical customer isn’t a Gen Alpha who does everything on their smartphone, so there’s a neat array of proper buttons, switches and dials to take care of all the functions without taking your eyes off the road. If you are into technology you may be disappointed by the relatively small infotainment screen, but from a usability perspective it does the job well.

As you’d expect the level of fit and finish is impressive and the diamond quilting on the leather seats looks exceptional. The seats themselves are comfortable and supportive, with generous cushioning rather than the sportier, less comfortable seats found in purebred sports cars.

The DB12 is a 2+2, with a pair of seats in the rear, but to be frank you’d need to be desperate to use them. They are ‘emergency use only’ seats that will deeply compromise the front seat occupants just to squeeze anyone in the back.

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.

Aston Martin was once famous for its V12 engines, but with the brand changing hands so many times over the years and the pressure to develop increasingly expensive powerful, yet fuel-efficient engines means the brand now outsources some of its powertrains. So while the brand is developing a new V12 engine, the DB12 is powered by the 4.0-litre twin-turbo V8 built by Mercedes-AMG.

While Aston Martin fans may bemoan the use of a German engine in this British car, the truth is it’s a much better engine than the previous V12 used in the DB11, Vantage and other models. It offers up 500kW/800Nm and delivers all that performance in a broad spread across the rev range (unlike the old V12).

It gives the DB12 a sportier, more urgent and responsive driving character than its predecessors and helps to explain the new ‘Super Tourer’ name. Aston Martin claims it can run 0-100km/h in just 3.6 seconds and has a top speed of 325km/h.

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.

Aston Martin claims a combined fuel cycle return of 12.2 litres per 100km, which is not what you would call sipping the unleaded, but given this is a large, grand tourer (sorry, Aston Martin, Super Tourer) it’s actually a solid return. If you’re in the market for a car like this, anything sub 15L/100km should be considered acceptable; if you’re worrying about emissions or the cost of petrol you probably shouldn’t be buying a $455k sports car.

Unfortunately we didn’t have the DB12 long enough to get a real-world fuel economy figure, so we’ll just have to take Aston Martin’s word for it.

With its 78-litre tank the DB12 does have a theoretical driving range of approximately 630km.

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 defining characteristic of a ‘Grand Tourer’ is that while fast, they aren’t typically agile and as responsive as a sports car. In other words, a grand tourer is best suited to a long, cross-country trip on faster, flowing roads, rather than a winding mountain pass or twisty switchbacks.

So, in keeping with the ‘Super Tourer’ theme that the brand is selling, the DB12 is notably more responsive and therefore more engaging to drive across any condition. It still has the comfortable, laid-back nature of a ‘GT’ but when you want to have some fun it’s capable of hiding its size and feeling very sporty.

The handling is highlighted by how quickly the front end of the car reacts. Typically with this front-engined 'GT' cars you feel like you're sitting at the very back of the car, so it feels slow to respond to inputs and that can create a feeling of laziness. But not in the DB12. The front end feels sharp and responsive, making you feel like you are right at the centre of the action.

It's helped by the engine that feels lighter than the old V12s but more urgent with its power delivery, too. It adds to that feeling of a more sporty and focused driver's car, rather than a 'GT' for just soaking up the kays. It shouldn't be surprising though, AMG doesn't really build relaxed, laid-back engines, rather ones designed for maximum excitement - and that's what the DB12 delivers when you bury your right foot.

Remarkably, it also plays the role of ‘daily driver’ well too. Which is an unusual way to think of a car like this, but for those fortunate enough to have the means to afford it, the DB12 could ferry you from home to work and back again in luxury and comfort.

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 standard Aston Martin warranty covers three years/unlimited kilometres, which is unusually short by current industry standards; a curious case of the top end of the market lagging behind the mainstream brands.

Servicing is handled by individual dealers, so there’s no set cost structure, but the intervals are every 12 months/16,000km. Instead you’ll need to discuss what sort of costs are involved with keeping your DB12 running smoothly when you speak to a salesperson.

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.