The Mercedes Benz Cl63 AMG is a performance coupe that has captivated enthusiasts for years. However, when discussing the CL63, it’s crucial to distinguish between pre-2011 and 2011+ models. The post-2011 Mercedes Benz CL63 variants, equipped with the M157 engine, command a significantly higher value than their 2007-2010 predecessors. This premium is largely attributed to the enhanced reliability and superior performance offered by the M157 engine. Let’s delve into the key differences, particularly focusing on the transmission and engine aspects that make the later models so sought after.
The MCT Transmission in the Mercedes Benz CL63: An Overview
The Speedshift MCT 7-speed automatic transmission is a defining feature of the Mercedes Benz CL63 AMG. For the 2011-2014 CL63 models, to the best of our knowledge, the fundamental mechanical components of the MCT remained consistent. While subtle improvements might have been introduced via software updates over the years, the core mechanics stayed largely unchanged during this production run.
It’s important to clarify that the MCT is by no means a subpar transmission. It’s a capable unit designed to handle the high performance demands of an AMG vehicle. However, when placed in context with the rapid advancements in automotive transmission technology, particularly when compared to the latest generation of automatic and dual-clutch transmissions (DCTs), the MCT reveals its age in certain aspects.
One common observation among drivers is that the MCT in the CL63 isn’t as seamlessly smooth or lightning-fast in its shifts as some of the more modern transmissions available today. There can be a noticeable delay between initiating a gear change via the paddle shifters and the actual execution of the shift. Furthermore, the gear changes themselves, while quick, aren’t as fluid as the virtually imperceptible shifts offered by newer transmissions.
Another characteristic of the MCT transmission in the Mercedes Benz CL63 is a tendency towards jerkiness in specific driving scenarios. Abrupt downshifts, especially when accelerating suddenly or decelerating at lower speeds, can sometimes feel less refined than desired, contributing to a slightly less polished driving experience compared to vehicles equipped with more contemporary transmission technology.
Contrasting with the 5-Speed Automatic in V12 Mercedes Models
Interestingly, when considering grand touring comfort, the older 5-speed automatic transmission found in V12 Mercedes models presents a compelling alternative. While undeniably an older technological design, this 5-speed “slushbox” has its own set of virtues. Notably, its manual shift times are surprisingly respectable, often cited as being comparable to the MCT transmission in the CL63. More importantly, the 5-speed transmission excels in smoothness and robustness.
For the purpose of relaxed, long-distance driving, the 5-speed automatic arguably emerges as a more suitable choice. Its unobtrusive nature and emphasis on smooth transitions align perfectly with the grand touring ethos. Personal driving experiences in models like the C215 CL55, equipped with this 5-speed transmission, often highlight the absence of any significant drawbacks in typical driving conditions. Many drivers, including those familiar with older Mercedes models like the W140, express contentment with the performance and characteristics of this robust and smooth 5-speed gearbox.
Modern Transmission Benchmarks: BMW ZF 8-Speed and AMG DCT
To further contextualize the MCT transmission’s performance in the Mercedes Benz CL63, it’s helpful to draw comparisons with contemporary transmission technologies. A prime example is the 8-speed ZF automatic transmission, widely praised for its excellence. Experiences with vehicles like the BMW M240i xDrive, equipped with the ZF 8-speed, underscore its near-instantaneous manual shift capabilities and remarkably seamless acceleration through the gears, creating a sensation of continuous, uninterrupted thrust.
Similarly, the DCT (Dual-Clutch Transmission) found in modern AMG models, such as the AMG GT S, showcases another level of refinement. The DCT in the AMG GT S delivers a comparable level of smoothness to the benchmark set by the BMW’s 8-speed ZF. This highlights the advancements in transmission technology that have occurred since the introduction of the MCT in the Mercedes Benz CL63.
Conclusion: Appreciating the Mercedes Benz CL63 MCT in Context
In summary, the 7-speed MCT transmission in the Mercedes Benz CL63 is a capable piece of engineering, well-suited for the performance demands of the vehicle. However, it’s important to acknowledge that it does exhibit certain characteristics, such as a perceptible delay in shifts and occasional jerkiness, which are more pronounced when compared to the latest generation of automatic and dual-clutch transmissions.
While the MCT might not represent the pinnacle of modern transmission technology, it remains a functional and integral part of the Mercedes Benz CL63 driving experience. Understanding its strengths and limitations allows for a more nuanced appreciation of the vehicle’s overall performance and its position within the evolving landscape of automotive technology. Ultimately, the preference between different transmission types often boils down to individual driving style and priorities, whether it’s outright shift speed and smoothness or the more relaxed and robust nature of older, yet refined, designs.
