Mercedes-benz Amg c63 problems

Common Mercedes-benz Amg c63 problems

The Mercedes-Benz C63 AMG, equipped with the M156 engine, has been known to experience several common problems. These issues range from engine performance to interior comfort and are based on complaints from owners of this car.

• M156 Head Bolt Failure: Shortly after its launch in late 2007, C63 owners started noticing clicking noises as soon as the engine was started. Oil levels rose, while engine coolant constantly needed "topping off." Then, a large number of the M156 engines started failing. There were head gasket problems, bent rods, and ruined engines. The cause of these problems was discovered to be corroding and failing head bolts. Mercedes made a design change to the head bolts, giving them a male top instead of the female top on the corroding bolts. The new design would not stretch to the point of allowing corrosion. The old design head bolts were on C63's engines until the 2011 model year.

• Camshafts and Lifters: In 2011, a class action suit was filed by a number of C63 AMG owners who contended that Mercedes-Benz knew about M156 problems with camshafts, lifters, and bearings wearing out prematurely. This led to thousands of dollars in repair costs for customers. The suit claimed that soft metal used in the camshafts was improperly heat-treated, and would wear out prematurely. The engine is known to experience oil "bleed down," causing a tapping noise from metal hitting metal when the engine is started. This noise is due to oil bleeding down off of the lifters, creating an un-lubricated "gap" between the lifter and the cam. It takes a few minutes for the cam and lifter to become lubricated, causing the tapping noise from metal hitting metal. Always check your oil levels and have your car serviced if the tapping lasts more than a few minutes.

• Carbon Build-up: The C63's engine, particularly the M156 V8 engine used in earlier models, is known to accumulate carbon deposits on the intake valves over time. This can lead to rough idling, reduced performance, and potential misfires. Regular maintenance, such as walnut blasting or carbon cleaning, can help mitigate this issue.

• Transmission Issues: Some customers have reported problems with the transmission, such as rough shifting or jerky movements. This could be caused by a faulty valve body or issues with the transmission control module. It may be necessary to reprogram or replace these components.

• Suspension Components: The C63's performance-oriented suspension can experience wear and tear, leading to issues like clunking noises or a harsh ride. Common culprits include worn-out bushings, control arms, or shock absorbers. Regular inspection and replacement of these components will help maintain the vehicle's ride quality.

• Electrical Gremlins: Like many modern vehicles, the C63 has an extensive electrical system, and some owners have reported problems with various electrical components. These issues can range from malfunctioning sensors to problems with the infotainment system or electrical connectors. Diagnosing and resolving electrical issues may require the expertise of one of our trained technicians.

• Brake Wear: The C63's high-performance braking system, while effective, can experience accelerated wear due to the vehicle's weight and performance capabilities. Some customers reported premature brake pad and rotor wear, requiring more frequent replacements compared to regular sedans. It is essential to regularly inspect and replace brakes when necessary.

These common problems with the Mercedes-Benz C63 AMG are based on complaints from owners and can help potential buyers or current owners be aware of potential issues with the vehicle.

Are AMG C63S reliable?

Reliability good in warranty and just outside of it. Problem: Regular Maintenace cost. You must research this before purchase and see if you can live with it. Non carbon ceramic brake rotors are like a grand a piece and wear as fast as brake pads.

What is the problem with the Mercedes C63 V8?

Carbon Build-up: The C63's engine, particularly the M156 V8 engine used in earlier models, is known to accumulate carbon deposits on the intake valves over time. This can lead to rough idling, reduced performance, and potential misfires.

Are C63 expensive to maintain?

The annual maintenance cost of a Mercedes-Benz C63 AMG is $1,077.

Why did Mercedes stop making C63 AMG?

More and more cars are downsizing due to stringent emissions regulations. The latest C63 is the most recent example, eschewing its brawny 4.0-liter V8 in favor of a small 2.0-liter four-cylinder. There had been some rumors about Affalterbach's plan to re-install a bigger engine, but that's not going to happen.