The Mercedes-Benz W212 E-Class, specifically the E350, represents a significant leap in technology for the mid-size luxury sedan segment. This generation introduced cutting-edge features like driver drowsiness detection and lane departure warning, packaged within a sleek, angular design. But beneath the surface lies a complex array of engine options and a significant mid-cycle refresh that distinguishes the W212 from its predecessors. This article will explore the W212 E350’s powertrain variations, the impactful 2013 facelift, and clarify its position within the broader E-Class lineage.
Decoding the W212 Engine Lineup: From Four Cylinders to V8 Powerhouses
The W212 E-Class offered a diverse range of engines, catering to a broad spectrum of performance preferences. Entry-level models started with the turbocharged and direct-injected M271 EVO four-cylinder engine, later replaced by the updated M274. However, the engine options become more intricate when considering the V6 and V8 variants, especially with the introduction of the 2013 facelift.
The V6 Evolution: M272 and M276
Pre-facelift W212s (2009-2011) utilizing the CGI (Charged Gasoline Injection) system featured a direct-injected version of the M272 V6 engine, boasting increased power output. Interestingly, from 2013 onwards, this engine was also offered with an electric-assist hybrid system integrated between the engine and transmission in rear-wheel-drive models. Non-CGI models from 2009-2010 retained the standard port-injected M272.
A significant shift occurred between 2011 and 2014 with the adoption of the direct-injected M276 V6 engine. This engine also saw a high-performance Biturbo variant in the E400 model, further expanding the W212’s performance spectrum.
V8 Muscle: Naturally Aspirated and Biturbo Options
The W212 also catered to those seeking V8 power. Earlier E550 models housed the naturally aspirated M273 V8, while the performance-oriented E63 AMG utilized the M156. Later iterations of the E550 transitioned to the Biturbo M278, and the E63 AMG received the upgraded, AMG-enhanced M157.
The 2013 Facelift: A Technological Turning Point
The 2013 mid-cycle refresh was more than just a cosmetic update. Considered one of the most complex facelifts undertaken by Mercedes-Benz, it involved substantial changes across the W212 platform. This refresh impacted engine options, drivetrain configurations, and technology features, solidifying the W212’s position as a technological leader in its class. The introduction of direct injection across the engine lineup emphasized fuel efficiency without sacrificing performance.
Drivetrain and Chassis Clarification: Rear-Wheel Drive and 4MATIC
The W212 standardized the availability of both rear-wheel drive and 4MATIC all-wheel drive across most engine options, providing buyers with greater choice and control over their driving experience. Importantly, while E-Class coupes shared the E-Class branding, their “C207” chassis code actually linked them more closely to the previous generation CLK-Class models.
