3 Odor from HVAC. Some GLS owners have complained about a foul-smelling moldy odor whenever they turn on the AC. It’s a fairly common issue in 2010-era Mercedes-Benz vehicles which even prompted a class-action lawsuit that the company eventually paid out to settle. Here is how a few GLS owners described the issue: Anothermember of the B-engine family is the inline-six version, also known as the B58. That is also turbocharged and better than its predecessor, the N58. RELATED: 6 Most Reliable Mercedes-Benz Engines Ever Built (6 To Stay Away From) On the other hand, Mercedes-Benz had some issues with some of its engines, but fewer and costlier Likeother cars on this list, the 2012-13 Mercedes-Benz C250 has its good qualities, such as a smooth turbocharged 201-hp four-cylinder engine for a comfortable ride. That makes its failures more notable. Besides bad mileage, it can be costly to repair with seven recalls, almost all involving faulty airbags. Isa used Mercedes B-Class hatchback reliable? The good news is the B-Class did stunningly well in our most recent reliability survey, coming top in the MPV class with an overall Theall-new third-generation Mercedes-Benz B-Class has lost some of the previous gen's frumpiness and gained tech, refinement and plushness. View 94 images The Mercedes-Benz B-Class is a car that 2 W221 (2007-2013) In time, I think the W221 S-Class will go down as one of the best designs ever. Not only did it bring the S-Class back to prominence after the weak W220 model, but it offered the sort of bold, aggressive styling that car shoppers now want — a departure from earlier models with subtle styling, yes, but a classic example of MercedesBenz (German pronunciation: [mɛʁˌtseːdəs ˈbɛnts,-dɛs-] ⓘ), commonly referred to as Mercedes and sometimes as Benz, is a German luxury and commercial vehicle automotive brand established in 1926. Mercedes-Benz AG (a Mercedes-Benz Group subsidiary established in 2019) is headquartered in Stuttgart, Baden-Württemberg, MercedesB-Class Reliability. When it comes to Mercedes Benz, proper maintenance is critical to its long term reliability and longevity. If well maintained, the B-Class can run for years without problems but if you skimp on maintenance, things can get nasty. Some of the commonly reported B-Class problems include AhwS.