The R230 SL-Class cars were fitted with a brake-by-wire system called Sensotronic Brake Control (SBC). The M156 was designed in house by AMG the M157 is a tuned version of an MB engine. Here are 5 German cars that will stand out under $5000. Engine oil is commonly referred to as the lifeblood of the motor. Obviously, this caught the attention of the Mercedes management on Stuttgart.
Basically, they would fail, they would loosen up, and they would start to make noise this.”. In essence, the ABC is really a coil spring suspension with added hydraulic levelling. If the high maintenance cost doesn’t scare you, and you still want a car with the ABC, look for 2008 or newer cars. Look for one that had them already replaced or one with updated gears – check the engine serial number.
It’s not only the camshafts that can wear. Check that the car responds correctly, with no warning messages, to manually adjusting the ride height. The M156 displaces 6,208 cc (6.2 L; 378.8 cu in) and shares very little with other Mercedes-Benz engine families like the M155. The M156 was the first engine designed fully by AMG and not based on a Mercedes-Benz engine. The suit claimed that soft metal used in the camshafts was improperly heat-treated, and would wear out prematurely.
Even if you don’t drive the car, the nitrogen gas will eventually escape, just like air escapes from a seemingly airtight balloon. Once a camshaft is scored and loses its profile, the cam followers can wear too – in severe cases to the point of breaking a hole in the centre. Engine serial numbers below have updated gears, which are free from the problem: M272 engines with serial numbers higher than 2729 . Citroen just took it one step further by getting rid of the coil springs altogether. He adds that M156 owners should add oil not at the recommend 10,000-mile interval, but at 5,000 miles, and with a zinc additive. It will have much better corrosion resistance, which is important if you are planning to keep the car for a couple years or longer. “Our first factory defect is really a shame, because this wasn’t some new AMG technology or anything overly complicated,” said Palmeri. “They went to turbocharging afterwards, and who knows what’s next with … Look for hydraulic fluid leaks – in the boot, on the headliner and around the hydraulic rams.
Both are cracking engines. By logging into your account, you agree to our, MBWorld Featured Car of the Month Contest, CL55 AMG, CL65 AMG, CL63 AMG (W215, W216), E55 AMG, E63 AMG, E43AMG (W210, W211, W212,W213), S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222 LWB), S63 AMG 4MATIC Coupe, S65 AMG Coupe (C217), Convertibles (A217), MB Coupes & Cabriolets Vendor Classifieds, Mercedes-Benz SUVs, Trucks, Vans, Diesels, Other, MB SUVs, Trucks, Vans, Diesels Vendor Classfieds, Classic, Vintage Mercedes-Benz Vehicles, Other Cars, Classic, Vintage MB Vehicles Vendor Classifieds, General Discussion of Mercedes-Benz Classics, Wheels, Tires, Suspension & Brakes Forum-Sponsored By Tire Rack. The M156 was the first engine designed fully by AMG and not based on a Mercedes-Benz engine. Class action lawsuit to be filed against Mercedes alleges AMG V8 defects, "Update: Mercedes Benz AMG Class Action for the M156 V8 Engine", "Mercedes-Benz SLS AMG: fascination and high tech: The new 'Gullwing' from Mercedes-Benz", Engine and power transfer: Exclusive, high-performance eight-cylinder front-mid-engine and double-declutch transmission in a transaxle arrangement, https://en.wikipedia.org/w/index.php?title=Mercedes-Benz_M156_engine&oldid=984986499, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 October 2020, at 08:13. Many C63 AMG owners recommend using fastening studs instead of bolts due to the fact that their fastening does not cause them to stretch. Shortly after its launch in late 2007, C63 owners started noticing clicking noises as soon as the engine was started.
Press the buttons below to display the specs and engine technical details. Create new posts and participate in discussions. For me, it's comfort and luxury, not high performance and reliability. The pulsation damper, which is just another nitrogen accumulator, evens out these pulses (membrane deflecting). These cookies do not store any personal information. MBClub UK is in no way affiliated with Mercedes-Benz, DaimlerChrysler or any of their respective trademarks. There have been cases of head bolt failures due to corrosion in the M156 engines.
These cookies will be stored in your browser only with your consent. Once the affected cars have been sorted out by the recall, the system is reasonably reliable. When the bolt top snapped off, a major head gasket problem could follow. All cars produced before 2010/2011 may develop this problem. Your two biggest concerns are hydraulic system issues (mainly leaks) and weather intrusion (fancy name for a leaking roof). Mercedes-AMG issued a service bulletin covering every car with this issue, which may not be as helpful. I would put the AMG engine over the stock engine anyday but it looks like the CLS550 still has the "AMG" V8 from ol and the new one that's 6.3 liters. You should avoid cars with incomplete service history. This section covers the potential reliability issues that you might have with the Mercedes-Benz R230. Mercedes-Benz eventually started galvanizing all their cars, which improved the corrosion resistance significantly.
[2]. As always, if you have any questions or comments, leave them in the comments below. Naturally aspirated or supercharged (SL 55 AMG). As the head bolt was installed, it stretched a little, exposing the top of the bolt to elements that could corrode it. Its 6.2 liter engine produced 518 horsepower and 465 foot-pounds of torque. If it takes much longer than that, the pump may be on its way out. The M156 is a 6.2L V8 naturally aspirated engine that produced up to 518hp depending on the variant.
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