• 2012 C63 AMG facelift models to get MCT 7 speed transmission, does this change the tuning game?

      The major roadblock for the C63 AMG has been the transmission whose software has not been cracked preventing tuners from exceeding the limitations. Well, Mercedes has no decided to replace the 7-speed auto in the C63 with their AMG Speedshift MCT transmission. This transmission is a dual clutch, semi-automatic transmission that is also featured in the CLS63 AMG. It is able to handle the torque produced by the twin turbo V8 so perhaps this means the C63 will have a higher torque capacity than the old 7G-tronic automatic which was limited to 542 pound-feet of torque.

      How does this transmission differ from the old one? Well, it does not have a torque converter. It uses a compact wet clutch setup with multiple clutches hence the name MCT (multi-clutch technology). It is a dual clutch transmission but not a true dual clutch. Confusing, yes, but really it is the automatic we all know with the torque converter replaced by wet clutch packs. This allows faster shifts of about 100 milliseconds.

      This transmission is available already in the SL63 and E63 AMG. It is also used with the new twin turbo V8 motors and is featured in the CLS63 AMG which makes us think it can handle a bit of torque. It is also lighter than the previous automatic transmission weighing in at 80 kilograms.

      There are multiple modes the user can choose to use with the transmission. There are four shifting modes the driver can choose from. There is also a completely manual function which will not up-shift automatically for the driver which is a huge plus and mitigates some of the driver interaction advantage BMW has had for some time. Additionally, a "race start" mode is features which is a fancy way of saying launch control.

      Overall, this is a great development for the C63 as Mercedes continues to improve the model and make it far more of a drivers car. Mercedes continues to raise the bar and we applaud their efforts. What we are left wondering is if tuners will be able to crack the transmission software on this trans and just how much torque it can handle. Time will tell, but this makes things very interesting in the sport sedan segment as it appears Mercedes has surpassed the M3 by continually upgrading the C63 while the M3 has stayed stagnant.

      This article was originally published in forum thread: 2012 C63 AMG facelift models to get MCT 7 speed transmission, does this change the tuning game? started by Sticky View original post
      Comments 48 Comments
      1. MHP LLC's Avatar
        MHP LLC -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Trying to treat it like an auto is the mistake people make. Treat it like an automated manual and drive it as such and SMG is excellent. The only bad thing about it is auto mode.
        I always drove mine in M mode, S6, etc. Couldn't take it any other way, and it was magnificent in this mode as you stated.
      1. Sticky's Avatar
        Sticky -
        Here is a press release on the transmission released today:

        Affalterbach – The successful Mercedes-Benz C 63 AMG is now more attractive than ever: the modified design of the top-of-the-range C-Class model is
        complemented by numerous enhancements to its technology which deliver even more driving enjoyment while reducing fuel consumption significantly. The introduction of the AMG SPEEDSHIFT MCT 7-speed sports transmission with the "Controlled Efficiency" mode as standard along with a new power steering pump helps to reduce the combined NEDC fuel consumption by about ten percent to 12.0 l/100 km (Estate: 12.3 l/100 km). The output of the AMG 6.3-litre V8 engine is unchanged at 336 kW (457 hp) and can be increased to a maximum of 358 kW (487 hp) with the optional AMG Performance package. Agility, grip and ride comfort have been enhanced as a result of numerous measures to optimise the AMG sports suspension. New assistance systems and a new generation of telematics with internet access increase both safety and comfort.

        The latest 2011 generation of the C 63 AMG is now more dynamic and athletic than ever. Thanks to its new radiator grille with a large Mercedes star and a wing-type transverse louvre, as well as a new AMG front apron with a lower cross member painted in high-gloss black, special AMG daytime running lights and side air outlets, the front section recalls the look of the SL 63 AMG high-performance roadster. The new bonnet with its modified powerdomes is now made of aluminium. New clear-lens headlamps emphasise the car's distinctive, self-confident presence, especially when the optional Intelligent Light System (ILS) is also specified. The wide front wings with the "6.3 AMG" legend and the new 5 twin-spoke AMG light-alloy wheels which are painted in titanium grey and have a high-sheen finish dominate the side view. Good contact with the road is provided by the wide 235/40 R 18 and 255/35 R 18 tyres at front and rear respectively.

        The rear view of the C 63 AMG also evokes the SL 63 AMG: the new AMG rear apron has a distinctive, black diffuser insert with three pronounced diffuser fins. The two chromed twin tailpipes of the AMG sports exhaust system are as pleasing to the ear as they are to the eye.

        AMG SPEEDSHIFT MCT 7-speed sports transmission from the SL 63 AMG

        Under the skin, too, the top C-Class model boasts a wealth of new technology including the AMG SPEEDSHIFT MCT 7-speed sports transmission - another advanced feature adopted from the SL 63 AMG. Rather than using a torque converter, this innovative transmission has a wet start-off clutch which allows it to deliver a much more efficient, agile and direct response. Fuel consumption and emissions have been reduced significantly thanks to the "Controlled Efficiency" mode and a new power steering pump: at 12.0 litres per 100 km (Estate: 12.3 l/100 km) the combined NEDC fuel consumption of the C 63 AMG is 1.4 litres (Estate: 1.3 litres) lower than that of the predecessor model; this represents a reduction in fuel consumption of some ten percent. The CO2 emissions figure is now 280 (Estate: 288) grams per kilometre. Both power variants have identical fuel consumption and emission figures.

        The AMG SPEEDSHIFT MCT 7-speed sports transmission impresses with its exceptional flexibility: with four driving modes as well as double-declutching and RACE START functions it is as compatible with a relaxed, fuel-saving driving style as it is with high-speed laps on a closed racing circuit and extremely dynamic overtaking manoeuvres. The Controlled Efficiency "C" mode is programmed to provide early, comfortable upshifts while maintaining the lowest possible engine speed to help the driver keep fuel consumption down. The "S", "S+" and "M" modes deliver increased agility through fast, responsive gear changes and higher revs. Gear changes in the "S+" and "M" modes take just 100 milliseconds.

        The naturally aspirated eight-cylinder engine with its large displacement of 6208 cc develops 336 kW (457 hp) at 6800 rpm and attains a peak torque of 600 newton metres at 5000 rpm. A look at the performance figures confirms that the new C 63 AMG retains its predecessor's position as the top performing model in its segment: acceleration from standstill to 100 km/h takes just 4.5 seconds (Estate: 4.6 s) while the top speed is 250 km/h (electronically limited).
        Performance package: technology transfer from the SLS AMG

        Even more dynamic performance is available with the optional AMG Performance package: this offers 358 kW (487 hp) and allows a 0-100 km/h acceleration time of 4.4 seconds (Estate: 4.5 s). The Mercedes-AMG engine experts have achieved this increase in output thanks to a technology transfer from the SLS AMG: the forged pistons, connecting rods and the lightweight crankshaft all come from the gullwing model's engine. The reduced mass inertia of the components – which are three
        kilograms lighter than those of the standard version – allows the naturally aspirated eight-cylinder engine to rev up with even greater ease and agility. Models equipped with the performance package can be identified by the variable intake manifold painted in titanium grey under the bonnet, the AMG high-performance braking system with composite front discs and red painted brake calipers all round, the carbon-fibre spoiler lip on the boot lid (Saloon) and the AMG performance steering wheel in nappa leather with an Alcantara® grip area.

        Key data at a glance:

        C 63 AMG
        C 63 AMG Estate
        6208 cc
        6208 cc
        Bore x stroke
        102.2 x 94.6 mm
        102.2 x 94.6 mm
        Compression ratio
        11.3 : 1
        11.3 : 1
        336 kW (457 hp) at 6800 rpm
        358 kW (487 hp) at 6800 rpm*
        336 kW (457 hp) at 6800 rpm
        358 kW (487 hp) at 6800 rpm*
        Max. torque
        600 Nm at 5000 rpm
        600 Nm at 5000 rpm
        Engine weight (dry)
        196 kg
        196 kg
        Fuel consumption NEDC combined
        12.0 l/100 km
        12.3 l/100 km
        CO2 emissions
        280 g/km
        288 g/km

        Acceleration 0 - 100 km/h
        4.5 s 4.4 s*
        4.6 s 4.5 s*
        Top speed**
        250 km/h**
        250 km/h**
        * with AMG Performance package; ** electronically limited

        Optimised suspension, new steering system reduces fuel consumption

        The AMG sports suspension with a special front axle, reinforced rear axle and wider track all round has undergone thorough modification; the driver benefits from this in two ways as the C 63 AMG now offers greater driving enjoyment and ride comfort at all times. The new, stiffer elastokinematics, the revised axle kinematics with more negative camber all round and the new rear-axle anti-roll bar with a larger cross-section result in higher agility and greater lateral acceleration. But driving dynamics is not the only area in which progress has been made: new spring and damper rates have optimised both the responsiveness of the suspension as well as the road roar and tyre vibration characteristics.
        The AMG speed-sensitive sports steering with a direct ratio (13.5 : 1) has a newly developed power-steering pump which plays a decisive role in reducing the fuel consumption. This is because the power assistance for the steering only requires energy when the driver is actually making steering movements. Reliable deceleration at all times is ensured by the AMG high-performance braking system with internally ventilated and perforated discs all round.

        Interior: high quality and perceived value

        Even a quick glance at the interior of the C 63 AMG reveals the considerable progress which has been made: the completely new dashboard design with an integrated screen impresses with its particularly attractive appearance and the superior quality of the details which immediately bring the new CLS 63 AMG to mind. The quality look and feel meet the highest standards. The new, all-colour, three-dimensional TFT display in the middle of the redesigned speedometer welcomes the driver by showing the AMG logo. The new three-spoke AMG performance steering wheel - another feature adopted from the CLS 63 AMG – which is trimmed in nappa leather and features a metallic trim element has flattened top and bottom sections as well as grip areas which are specially shaped and trimmed in perforated leather for perfect steering control. Aluminium shift paddles allow manual gear selection.

        Fine trim elements in brushed dark aluminium are to be found on the dashboard and doors. Situated in the centre console, which is enhanced with high-gloss black piano lacquer trim elements, is the new rotary control for selecting the transmission modes C, S, S+, M and RACE START. The special AMG sports seats with integral head restraints and adaptive backrests are available from launch with combined ARTICO/DINAMICA black upholstery. DINAMICA is a new type of breathable man-made fibre which is pleasant to the touch and is characterised by low emissions and a high degree of lightfastness. The side bolsters of the AMG sports seats are covered in ARTICO while the centre panels of the seat cushions are also upholstered with DINAMICA.
      1. Sorena's Avatar
        Sorena -
        Sticky i read somewhere that Coupe gets a 5.5 naturally aspirated engine , is it right?
      1. 1cleanAMG's Avatar
        1cleanAMG -
        Click here to enlarge

        Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by HeroSina Click here to enlarge
        Sticky i read somewhere that Coupe gets a 5.5 naturally aspirated engine , is it right?
      1. Barfly's Avatar
        Barfly -
        I like the car. When's the coupe coming out?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Barfly Click here to enlarge
        I like the car. When's the coupe coming out?
        I would assume in the next few months?
      1. europeankar's Avatar
        europeankar -
        Click here to enlarge Originally Posted by Fly970TT Click here to enlarge
        I had a C63 after that W212 E63..MCT is garbage. It would slip and jerk..not even close to DCT or PDK.
        IMO the C63 might not be as fast but is a lot smoother. I hated MCT so much i traded in for PTT..lost $20k in 1 year!
        My god, I am just about to order a MCT C63. Glad I am looking at this right now. I really hate the 7G on my C63. Is the MCT C63 going to have the exact the same tranny in your old W212? I really like F1, PDK, MDCT, S tronic, etc. I guess I will be very disappointed? 7G in M mode I find it slow. It's a good automatic box but this is not what I want.