Likes
- That engine, that sound, that performance.
- Easily one of the best ever AMG models.
- Huge price range to choose from.
- The right example could be a future classic.
Used Mercedes-Benz C63 AMG review
2008 - 2015
Dislikes
- Long list of common issues.
- Mechanical package could easily end in tears.
- Excessively expensive repair costs (you’ll need very deep pockets)
- Simply not ageing at all well.
Stuff you should know
- Released in Australia in March 2008, the Mercedes-Benz W204 C63 AMG was the performance-focused flagship model of the C-Class range, available in 2-door coupe, 4-door sedan, and 5-door wagon body styles.
- Initially powered by a naturally aspirated 6.2-litre V8 petrol engine paired with a seven-speed automatic transmission, a mid-cycle update in 2011 introduced Mercedes-Benz’s ‘AMG Speedshift MCT transmission,’ which replaced the traditional torque converter with a wet clutch for faster and smoother shifts. The update also brought refreshed styling, additional features, and revised suspension calibration for improved handling and ride quality.
- In 2009, the Performance Pack Plus was launched, increasing engine output and adding upgraded components. Alongside this, Mercedes-Benz released the limited-run ‘Edition 63’ version of the C63 AMG, with unique cosmetic and feature upgrades. Full details on this are included in the trim spec breakdown.
- The C63 AMG Black Series Coupe arrived in Australia in March 2012 and was one of AMG’s most extreme models to date. It featured a wider track, aggressive aerodynamics, weight-saving measures, and numerous components borrowed from the SLS AMG supercar. Equipped with a host of track-focused enhancements, the Black Series truly earned its reputation as a race car for the road.
- In 2013, AMG introduced the Edition 507 as a run-out model, offering the same engine tune as the Black Series Coupe. While slightly less extreme in its setup, it retained much of the performance focus, making it an enticing option for enthusiasts seeking exclusivity and power in equal measure.
- As the C63 AMG was offered in three body styles and multiple variants, the used market provides a wide range of options. Prices vary significantly, with early high-kilometre examples starting at the lower end of the spectrum, while pristine Black Series Coupes command a premium.
- The major consideration, however, is Mercedes-Benz’s mixed reputation for build quality, reliability, and the cost of maintenance and parts. Historically, Mercedes-Benz earned its reputation for over-engineered and meticulously crafted vehicles, but the W204 C-Class highlights that a premium badge doesn’t always guarantee a premium product.
- The W204 C63 AMG is known for a range of common issues, particularly with the M156 engine. Problems such as head bolt failure, camshaft wear, and timing chain tensioner faults can result in significant repair bills. Additionally, suspension components and the AMG Speedshift MCT transmission can be expensive to maintain, especially in high-kilometre examples. Depreciation on poorly maintained cars or lesser variants can also be substantial, adding further considerations for prospective buyers.
- While even the standard C63 AMG models remain thrilling cars that showcase some of AMG’s finest work when new, potential buyers must carefully assess the costs and risks associated with used AMG ownership.
What goes wrong
Exterior:
- When it comes to the exterior, some concerns have been raised about rear subframes corroding and failing, particularly in colder climates. While the internet has exaggerated the severity of this issue, Mercedes-Benz was aware of the problem and has reportedly provided warranty replacements even for vehicles outside the typical warranty period.
- If you’re considering a red C63, it’s important to inspect the paintwork, as poorly maintained red paint can fade or develop a chalky appearance over time.
- Pre-update models can experience grounding issues with the tail light connectors, which in some cases may melt. This is a relatively simple and inexpensive fix, though not overly common.
- Some owners report creaking or rattling from the sunroof, often caused by chassis flexing. This issue can usually be resolved by lubricating the sunroof seals.
- Mercedes wheels also tend to suffer on Australian roads, with reports of buckling, cracking, and clear coat peeling on pre-update multi-spoke designs. Many owners opt for aftermarket wheels for regular driving, keeping the original wheels in storage to preserve their condition.
- Driving a C63 as intended can also mean frequent rear tyre replacements. The naturally aspirated 6.2L V8 puts significant demands on premium performance tires.
- Similarly, while the AMG brakes deliver exceptional stopping power, they can be prohibitively expensive to maintain. Fortunately, many owners report success with aftermarket braking systems, which often perform just as well while being more durable and cost-effective.
Interior:
- Inside the cabin, pre-update models are more prone to interior rattles and squeaks, particularly from the dashboard area. Post-update cars tend to be quieter, though occasional rattles still occur.
- The leather dashboard on post-update cars is known to split over time, and even replacement dashboards can develop the same issue.
- It’s also worth checking that all seat adjustments are functional, as small objects like coins or bottles can jam the seat mechanisms.
- Electronic gremlins, such as failures in the steering lock motor, have also been reported. While dealership repairs for these issues can be expensive, independent mechanics or DIY fixes often offer substantial savings.
Mechanically:
Mechanically, the M156 6.2L V8 engine has a reputation for being high-maintenance and temperamental. Despite its incredible performance and sound, it is often criticised for its lack of reliability compared to rival engines such as the Toyota 2UR-GSE or the GM LS3, both of which are more affordable to maintain and better known for their durability.
- Common issues include:
- Valve cover oil leaks: These can drip oil onto the exhaust.
- Cam position sensor leaks: Oil can wick into the wiring harness and ECU, causing electrical headaches. Aftermarket kits
Exterior:
- When it comes to the exterior, some concerns have been raised about rear subframes corroding and failing, particularly in colder climates. While the internet has exaggerated the severity of this issue, Mercedes-Benz was aware of the problem and has reportedly provided warranty replacements even for vehicles outside the typical warranty period.
- If you’re considering a red C63, it’s important to inspect the paintwork, as poorly maintained red paint can fade or develop a chalky appearance over time.
- Pre-update models can experience grounding issues with the tail light connectors, which in some cases may melt. This is a relatively simple and inexpensive fix, though not overly common.
- Some owners report creaking or rattling from the sunroof, often caused by chassis flexing. This issue can usually be resolved by lubricating the sunroof seals.
- Mercedes wheels also tend to suffer on Australian roads, with reports of buckling, cracking, and clear coat peeling on pre-update multi-spoke designs. Many owners opt for aftermarket wheels for regular driving, keeping the original wheels in storage to preserve their condition.
- Driving a C63 as intended can also mean frequent rear tyre replacements. The naturally aspirated 6.2L V8 puts significant demands on premium performance tires.
- Similarly, while the AMG brakes deliver exceptional stopping power, they can be prohibitively expensive to maintain. Fortunately, many owners report success with aftermarket braking systems, which often perform just as well while being more durable and cost-effective.
Interior:
- Inside the cabin, pre-update models are more prone to interior rattles and squeaks, particularly from the dashboard area. Post-update cars tend to be quieter, though occasional rattles still occur.
- The leather dashboard on post-update cars is known to split over time, and even replacement dashboards can develop the same issue.
- It’s also worth checking that all seat adjustments are functional, as small objects like coins or bottles can jam the seat mechanisms.
- Electronic gremlins, such as failures in the steering lock motor, have also been reported. While dealership repairs for these issues can be expensive, independent mechanics or DIY fixes often offer substantial savings.
Mechanically:
Mechanically, the M156 6.2L V8 engine has a reputation for being high-maintenance and temperamental. Despite its incredible performance and sound, it is often criticised for its lack of reliability compared to rival engines such as the Toyota 2UR-GSE or the GM LS3, both of which are more affordable to maintain and better known for their durability.
- Common issues include:
- Valve cover oil leaks: These can drip oil onto the exhaust.
- Cam position sensor leaks: Oil can wick into the wiring harness and ECU, causing electrical headaches. Aftermarket kits offer a cheaper and often longer lasting solution.
- Camshaft and lifter wear: Known to occur prematurely and in some markets this has resulted in class action lawsuits. Sometimes the premature wear can necessitate replacement by 150,000km. Frequent oil changes (every 5,000km) can mitigate this.
- Cam phaser failure: These can rattle on startup. Mercedes charges around $1,000 each (and you’ll need four), but aftermarket rebuild kits provide a cheaper and permanent fix.
- Intake manifold failures: These can crack or erode, leading to air leaks. OEM replacements are prohibitively expensive, but aftermarket kits can address the issue for a fraction of the cost.
- Fuel injector failure: Stuck injectors can cause catastrophic engine damage, such as bent rods from hydraulic lock. Consider proactive injector replacement if the budget allows.
- Plastic components: Cooling system parts like the thermostat housing are prone to breaking. Replacing these preemptively with stronger alternatives is a wise move.
- Head bolt failures: Common in pre-2012 models, these require significant repairs, including cylinder head removal.
- Engine mounts: These tend to wear out and sag, causing vibrations and potential grounding issues as the engine drops in its mounts.
- Power steering hose: Misplacement can wear a hole in the sump, potentially leading to catastrophic oil starvation if ignored.
- The 7-speed automatic transmissions are generally reliable, though issues like conductor plate (transmission control module) failure have been reported.
Ownership:
- Ownership of the Mercedes-Benz C63 AMG in Australia often comes with mixed experiences. Many owners report issues with poor customer service, exorbitant costs for parts and labor, and frequent disputes over warranty claims.
- Even routine servicing at a dealership can be shockingly expensive. While some owners prefer sticking to OEM parts and dealership servicing, others, including Mercedes technicians, recommend finding a reputable independent mechanic and sourcing parts more affordably.
Exterior:
- When it comes to the exterior, some concerns have been raised about rear subframes corroding and failing, particularly in colder climates. While the internet has exaggerated the severity of this issue, Mercedes-Benz was aware of the problem and has reportedly provided warranty replacements even for vehicles outside the typical warranty period.
- If you’re considering a red C63, it’s important to inspect the paintwork, as poorly maintained red paint can fade or develop a chalky appearance over time.
- Pre-update models can experience grounding issues with the tail light connectors, which in some cases may melt. This is a relatively simple and inexpensive fix, though not overly common.
- Some owners report creaking or rattling from the sunroof, often caused by chassis flexing. This issue can usually be resolved by lubricating the sunroof seals.
- Mercedes wheels also tend to suffer on Australian roads, with reports of buckling, cracking, and clear coat peeling on pre-update multi-spoke designs. Many owners opt for aftermarket wheels for regular driving, keeping the original wheels in storage to preserve their condition.
- Driving a C63 as intended can also mean frequent rear tyre replacements. The naturally aspirated 6.2L V8 puts significant demands on premium performance tires.
- Similarly, while the AMG brakes deliver exceptional stopping power, they can be prohibitively expensive to maintain. Fortunately, many owners report success with aftermarket braking systems, which often perform just as well while being more durable and cost-effective.
Interior:
- Inside the cabin, pre-update models are more prone to interior rattles and squeaks, particularly from the dashboard area. Post-update cars tend to be quieter, though occasional rattles still occur.
- The leather dashboard on post-update cars is known to split over time, and even replacement dashboards can develop the same issue.
- It’s also worth checking that all seat adjustments are functional, as small objects like coins or bottles can jam the seat mechanisms.
- Electronic gremlins, such as failures in the steering lock motor, have also been reported. While dealership repairs for these issues can be expensive, independent mechanics or DIY fixes often offer substantial savings.
Mechanically:
Mechanically, the M156 6.2L V8 engine has a reputation for being high-maintenance and temperamental. Despite its incredible performance and sound, it is often criticised for its lack of reliability compared to rival engines such as the Toyota 2UR-GSE or the GM LS3, both of which are more affordable to maintain and better known for their durability.
- Common issues include:
- Valve cover oil leaks: These can drip oil onto the exhaust.
- Cam position sensor leaks: Oil can wick into the wiring harness and ECU, causing electrical headaches. Aftermarket kits offer a cheaper and often longer lasting solution.
- Camshaft and lifter wear: Known to occur prematurely and in some markets this has resulted in class action lawsuits. Sometimes the premature wear can necessitate replacement by 150,000km. Frequent oil changes (every 5,000km) can mitigate this.
- Cam phaser failure: These can rattle on startup. Mercedes charges around $1,000 each (and you’ll need four), but aftermarket rebuild kits provide a cheaper and permanent fix.
- Intake manifold failures: These can crack or erode, leading to air leaks. OEM replacements are prohibitively expensive, but aftermarket kits can address the issue for a fraction of the cost.
- Fuel injector failure: Stuck injectors can cause catastrophic engine damage, such as bent rods from hydraulic lock. Consider proactive injector replacement if the budget allows.
- Plastic components: Cooling system parts like the thermostat housing are prone to breaking. Replacing these preemptively with stronger alternatives is a wise move.
- Head bolt failures: Common in pre-2012 models, these require significant repairs, including cylinder head removal.
- Engine mounts: These tend to wear out and sag, causing vibrations and potential grounding issues as the engine drops in its mounts.
- Power steering hose: Misplacement can wear a hole in the sump, potentially leading to catastrophic oil starvation if ignored.
- The 7-speed automatic transmissions are generally reliable, though issues like conductor plate (transmission control module) failure have been reported.
Ownership:
- Ownership of the Mercedes-Benz C63 AMG in Australia often comes with mixed experiences. Many owners report issues with poor customer service, exorbitant costs for parts and labor, and frequent disputes over warranty claims.
- Even routine servicing at a dealership can be shockingly expensive. While some owners prefer sticking to OEM parts and dealership servicing, others, including Mercedes technicians, recommend finding a reputable independent mechanic and sourcing parts more affordably.
Should you buy it?
If you’re the type of person who sees the C63 AMG as the ultimate blend of European engineering and muscle car spirit, the prospect of owning one can seem incredibly appealing. They’re relatively affordable on the used market, and with that prestigious Mercedes badge, they must be a safe bet, right? Well, not exactly.
As we’ve highlighted many times, a premium badge doesn’t automatically translate to a premium product. Mechanically, the W204 C63 AMG underscores this point, proving to be as much a risk as it is a reward. Between its well-documented maintenance challenges and the potential for astronomical repair costs, owning one can quickly turn into a financial headache.
That said, it’s not all doom and gloom. If you manage to find an example with a flawless service history, ideally owned by one or two meticulous enthusiasts who’ve spared no expense in its upkeep, the equation changes slightly. A car like that, combined with a thorough and clean pre-purchase inspection, might just make it worth the gamble.
Even then, approach with caution. The W204 C63 AMG is not a car for the faint-hearted or the shallow-pocketed. While it can be a tremendously rewarding vehicle to own and drive, you’ll need to be prepared for the possibility of significant repair bills if something goes wrong. With deep pockets and careful consideration, however, it might just be the perfect package for the right buyer.
If you’re the type of person who sees the C63 AMG as the ultimate blend of European engineering and muscle car spirit, the prospect of owning one can seem incredibly appealing. They’re relatively affordable on the used market, and with that prestigious Mercedes badge, they must be a safe bet, right? Well, not exactly.
As we’ve highlighted many times, a premium badge doesn’t automatically translate to a premium product. Mechanically, the W204 C63 AMG underscores this point, proving to be as much a risk as it is a reward. Between its well-documented maintenance challenges and the potential for astronomical repair costs, owning one can quickly turn into a financial headache.
That said, it’s not all doom and gloom. If you manage to find an example with a flawless service history, ideally owned by one or two meticulous enthusiasts who’ve spared no expense in its upkeep, the equation changes slightly. A car like that, combined with a thorough and clean pre-purchase inspection, might just make it worth the gamble.
Even then, approach with caution. The W204 C63 AMG is not a car for the faint-hearted or the shallow-pocketed. While it can be a tremendously rewarding vehicle to own and drive, you’ll need to be prepared for the possibility of significant repair bills if something goes wrong. With deep pockets and careful consideration, however, it might just be the perfect package for the right buyer.
Should you buy it?
If you’re the type of person who sees the C63 AMG as the ultimate blend of European engineering and muscle car spirit, the prospect of owning one can seem incredibly appealing. They’re relatively affordable on the used market, and with that prestigious Mercedes badge, they must be a safe bet, right? Well, not exactly.
As we’ve highlighted many times, a premium badge doesn’t automatically translate to a premium product. Mechanically, the W204 C63 AMG underscores this point, proving to be as much a risk as it is a reward. Between its well-documented maintenance challenges and the potential for astronomical repair costs, owning one can quickly turn into a financial headache.
That said, it’s not all doom and gloom. If you manage to find an example with a flawless service history, ideally owned by one or two meticulous enthusiasts who’ve spared no expense in its upkeep, the equation changes slightly. A car like that, combined with a thorough and clean pre-purchase inspection, might just make it worth the gamble.
Even then, approach with caution. The W204 C63 AMG is not a car for the faint-hearted or the shallow-pocketed. While it can be a tremendously rewarding vehicle to own and drive, you’ll need to be prepared for the possibility of significant repair bills if something goes wrong. With deep pockets and careful consideration, however, it might just be the perfect package for the right buyer.
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Disclaimer
Please note that pricing information is subject to fluctuations in the automotive market.
Information correct as of Dec 18, 2024.
The advice provided on this website is general advice only. It has been prepared without taking into account your objectives, financial situation or needs. Before acting on this advice, you should consider the appropriateness of the advice, having regard to your own objectives, financial situation and needs.
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