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2018 MERCEDES-BENZ C-Class
Vehicle Summary
The 2018 Mercedes-Benz C-Class C300-4M is a luxury sedan featuring a 2.0-liter turbocharged inline-4 engine producing 241 horsepower. It has a 9-speed automatic transmission and is equipped with advanced safety features, including side and front airbags for the first and second rows, as well as seat belts with load limiters and pretensioners. Manufactured in Vance, Alabama, this vehicle offers a refined driving experience with its water-cooled engine, direct tire pressure monitoring system, and dual overhead cam valve train design.
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2018 MERCEDES-BENZ C-Class
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Complete Specifications
Known Issues for This Vehicle
Oil leaks
The M274 engine, like many other engines, can develop oil leaks over time. This can be due to aging gaskets and seals or improper maintenance.
Timing chain tensioner issues
Some owners have reported problems with the timing chain tensioner, which can lead to a rattling noise on startup and potentially cause engine damage if not addressed.
Coolant leaks
There have been instances of coolant leaks in the M274 engine, often due to faulty hoses or water pumps, leading to overheating issues.
Carbon buildup
As a direct-injection engine, the M274 is prone to carbon buildup on the intake valves, which can affect performance and fuel efficiency.
Turbocharger issues
Since the M274 engine is turbocharged, issues with the turbocharger, such as bearing wear or wastegate problems, can occur, leading to a loss of power.
Rough idling
Some owners have reported rough idling, which can be attributed to various causes, including faulty spark plugs or ignition coils.
High-pressure fuel pump failures
The high-pressure fuel pump can sometimes fail, leading to performance issues or difficulty starting the engine.
Engine misfires
Misfires may occur due to faulty ignition components, such as spark plugs or coils, or due to fuel delivery problems.
