Mercedes M273 Engine
INTRODUCTION
A V8 engine, the Mercedes M273 engine was made from 2005 to 2014. The S-Class, CL-Class, SL-Class, and E-Class are just a few Mercedes-Benz models that have employed this robust and dependable engine. We’ll examine the Mercedes M273 engine’s features, uses, and potential problems in more detail in this blog post.
The 4.6-liter V8 Mercedes M273 engine can generate up to 402 horsepower and 443 lb-ft of torque. It has a variable valve timing (VVT) system, a two-stage variable intake manifold, and a double overhead camshaft (DOHC) design with four valves per cylinder. It also has rear-wheel drive and a seven-speed automatic transmission.
Mercedes M273 5.5/4.7L Engine Specs, Problems & Reliability
Specifications:
The Mercedes M273 engine is a V8 with four strokes with natural aspiration. Four valves per cylinder and a double overhead camshaft (DOHC) design are used. The engine has a two-stage variable intake manifold and variable valve timing (VVT). It also has rear-wheel drive and a seven-speed automatic transmission.
Up to 382 hp and 391 lb-ft of torque are produced by the 4.7-liter M273 engine. In the S-Class and CL-Class, the 5.5-liter version can generate up to 382 horsepower and 391 lb-ft of torque, while in the SL-Class and E-Class, it can generate up to 518 horsepower and 465 lb-ft of torque.
Problems:
The Mercedes M273 engine has problems, just as any other engine. The following are some of the most typical issues that owners may run into:
- Oil leaks: Oil leaks, especially from the oil cooler and valve covers, have been reported with the Mercedes M273 engine. If these leaks go unchecked, they may result in diminished engine performance and even serious engine damage.
- Timing chain issues: The Mercedes M273 engine’s timing chain is prone to stretching over time, which can result in increased noise, lower performance, and even engine damage. A catastrophic engine failure may result from the timing chain failing.
- Camshaft adjuster failure: To change the timing of the intake and exhaust valves, the Mercedes M273 engine uses a variable valve timing system. If the camshaft adjusters malfunction, the engine’s performance may be reduced, and possible engine damage may result.
- Carbon buildup: If left unchecked, carbon buildup on the intake valves of the Mercedes M273 engine can result in lower engine performance and even engine damage.
Reliability:
Overall, the Mercedes M273 engine is a reliable engine. With proper maintenance and care, it can last for hundreds of thousands of miles. However, owners should be aware of the potential issues mentioned above and take steps to prevent or mitigate them. Regular maintenance, including oil changes, timing chain inspections, and carbon cleaning, can help prevent or mitigate these issues.
Conclusion:
The 4.7 liter and 5.5 liter displacements of the Mercedes M273 engine make it a potent and dependable V8 engine. Although it does have potential problems, regular maintenance and care can help avoid or lessen these problems. Be cautious to get a vehicle with a Mercedes M273 engine evaluated by a licensed mechanic before completing a purchase if you are thinking of doing so.
Applications:
The Mercedes M273 engine has been used in a variety of Mercedes-Benz vehicles, including:
– S-Class (W221): 2006-2013
– CL-Class (C216): 2007-2014
– SL-Class (R230): 2008-2011
– E-Class (W211): 2006-2009
Disadvantages of the Mercedes M273 engine
From 2005 until 2014, the Mercedes M273 engine, a V8 engine, was installed in a number of Mercedes-Benz models. Despite the fact that this engine has a lot of benefits, there may also be some drawbacks.
The M273 engine has a history of oil leaks, which is one of its frequent problems. Numerous locations, such as the valve covers, oil filter housing, and oil cooler lines, are susceptible to these leaks. To avoid causing harm to the engine, it’s crucial to frequently check the oil level and have any leaks fixed right away.
The timing chain on the M273 engine is another potential problem. Some engine models have a single timing chain, which over time may stretch and possibly harm the engine. To avoid this problem, it is crucial to have the timing chain inspected and replaced as necessary.
Additionally, some M273 engines have Active Cylinder Control (ACC), which can impair the performance of the engine. To maximize fuel efficiency, ACC is made to turn off cylinders when they are not required. However, this might affect the engine’s performance and balance. It is critical to have the engine inspected by a skilled mechanic if you notice any problems with its functioning.
Overall, while the Mercedes M273 engine is a reliable and powerful engine, it is important to be aware of these potential issues and to perform regular maintenance and care to prevent or mitigate them.
Potential issues:
Like any engine, the Mercedes M273 engine is not without its potential issues. Here are some of the most common issues that owners may experience:
- Oil leaks: Oil leaks, especially from the oil cooler and valve covers, have been reported with the Mercedes M273 engine. If these leaks go unchecked, they may result in diminished engine performance and even serious engine damage.
- Timing chain issues: The Mercedes M273 engine’s timing chain is prone to stretching over time, which can result in increased noise, lower performance, and even engine damage. A catastrophic engine failure may result from the timing chain failing.
- Camshaft adjuster failure: To change the timing of the intake and exhaust valves, the Mercedes M273 engine uses a variable valve timing system. If the camshaft adjusters malfunction, the engine’s performance may be reduced, and possible engine damage may result.
These problems can be avoided or reduced with routine maintenance and care. It’s critical to adhere to the manufacturer’s suggested maintenance schedule and have the engine frequently inspected by a skilled mechanic.
Conclusion:
A number of Mercedes-Benz automobiles have been equipped with the robust and dependable Mercedes M273 V8 engine. Although it does have potential problems, regular maintenance and care can help avoid or lessen these problems. Be cautious to get a vehicle with a Mercedes M273 engine evaluated by a licensed mechanic before completing a purchase if you are thinking of doing so.
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