The first C 63 made history right away; after all, this brutal mid-size car completely redefined the meaning of the three letters AMG. While refined Mercedes models from Affalterbach had previously appealed to a sophisticated clientele with their effortless power, a rather unobtrusive sound, and largely discreet looks, the performance variant of the C-Class generation 204, offered from 2007 to 2015, was a true rebel.
With its muscular wheel arches, angular front bumper, flared side skirts, its diffuser, the unmistakable 6.3 logo on the front fender, and four large tailpipes, it made it unmistakably clear that this was no well-behaved C 180. The design of its rounded predecessor was far more understated, and the C 55 AMG stayed optically much closer to its less powerful siblings.
Mechanical purity over High-Tech
Today, the beast is cherished for exactly this rawness, which has already turned it into a collector's item nearly two decades after its debut. At the heart of it all is the 6.2-liter V8, designated M156, an in-house development by the performance specialists from Affalterbach. Yes, the sonorous eight-cylinder actually has a displacement of 6,208 cubic centimeters; so, for once, the Swabians untypically exaggerated a bit with the model designation.
Compared to its two successors, which followed the downsizing trend with their 4.0-liter biturbo V8 and, in the current version, even a four-cylinder plug-in hybrid, it captivates with its pure mechanical feel and simplicity. Compared to the third generation and its controversial 'Performance Hybrid,' it feels like 'low-tech' in the best possible sense.
Running costs are not to be underestimated
This fact also ensures a pleasantly high level of reliability and longevity. "Even today, a good W204 C 63 can work perfectly as a daily driver. But only if you don’t treat it like a neglected C 220 CDI," says Linus Otto of Mechatronik in an interview with Classic Driver. The company from Pleidelsheim is among the world's most renowned when it comes to exclusive and high-performance models bearing the Three-Pointed-Star.
However, Otto also emphasizes that prospective C 63 buyers must bring maintenance discipline and the necessary budget. "Running costs will never be cheap compared to a model with a smaller engine," says Otto. In addition to workshop costs, expenses for taxes and insurance are substantial — not to mention fuel consumption, which realistically sits well beyond the 15-liter mark.
The M156 V8 comes with a few minor weak points
In general, the W204-generation C-Class is considered to have been built to last. The long-term quality holds up for the AMG version as well, even though a few weak points are known regarding the V8 engine. On early models, these include the cylinder head bolts. Regardless of the model year, the Mechatronik expert reports worn camshafts and hydraulic lifters (tappets), worn-out camshaft adjusters and adjuster plates, as well as leaks or defects in the intake manifolds.
Oil leaks are an issue, especially at the valve covers, the solenoid adjuster covers, and the oil filter housing. Since they now have a few years under their belt, auxiliary components such as idler pulleys and serpentine belts may also show signs of wear. A typical W204 problem, regardless of the engine, is rust on the rear subframes and brake lines.
Prioritize mechanics over aesthetics during inspection
Instead of being seduced by shiny paintwork, the focus should be on a complete history and the mileage, as a documented pedigree is among the most important criteria for cars of this type. Unfortunately, in the AMG world, one often encounters examples that were driven sportily but criminally neglected when it comes to care and maintenance. A smooth-idling engine and zero coolant loss carry significantly more weight during an inspection than flawless aesthetics.
If you have access to a lift, you should check the condition of the rear subframes and the brake lines. A look at the condition of the tires and the dampers reveals a lot about the previous owner's diligence. Prospective buyers should always keep in mind that an overhaul of the V8 can quickly result in four- or even five-figure bills. Even changing the brake pads or performing extensive inspections costs significantly more than a conventional C-Class. And more than what one might have initially expected. "Going for the lowest entry price is often the most expensive route with a C 63," Otto points out.
The C 63 improved significantly with its facelift
Prices for the first C 63 AMG vary widely on the used market. Pre-facelift models with high mileage and patchy histories start at around 20.000 euros. For post-facelift cars that have seen significant investment in care and strictly followed maintenance intervals, prices tend more towards 50.000 euros.
"The facelift from summer 2011 is overall the more recommendable choice. This applies not only to the styling and interior but also to the new, faster-shifting seven-speed automatic and a more mature overall impression," says the expert from Mechatronik. Ultimately, however, the condition is what matters most for these examples as well. If forced to choose between a facelift model with high mileage and unknown history or a perfectly preserved and documented early example, one should still opt for the latter in case of doubt.
Meanwhile, the price range for exclusive special editions is remarkable: while the Edition 507 is heading toward the 100.000-euro mark, the best Black Series models have long since established themselves well above 200.000 euros. Only 800 units of this brutally winged, 517-hp top version were built. They are highly sought after by collectors, who are more than willing to shell out 300.000 euros for unique examples. This is likely far from the end of the road regarding value appreciation. Not just for the Black Series or Edition 507, but also for the 'standard' 457-hp C 63 AMG, which offers genuine emotion as the last naturally aspirated one of its kind and is therefore expected to continue rising in value over the long term. Examples with the 'Performance Package' are especially coveted.
The estate offers the greatest surprise factor
On the market, the coupé (C204) and tastefully configured sedans are particularly sought after, while the rarer estate (S204) plays up its own unique appeal as a 'wolf in sheep's clothing' — all while serving as a practical family hauler. Ultimately, the choice of body style is a matter of taste and requirements, as each variant serves its own dedicated buyer group.
Whether you put the car away as an investment or use it actively depends entirely on your personal plans. "In general, for most W204 C 63s, it's not about every last kilometer, so it doesn't particularly hurt to drive the car. High mileage is not necessarily problematic if the car has been well maintained and cared for," Linus Otto emphasizes.
Photos: Mechatronik
