The 2014 Mercedes-Benz E250 BlueTEC sedan marked a significant step forward in fuel efficiency within the luxury vehicle segment. Achieving an EPA-estimated rating of 45 miles per gallon on the highway and 28 mpg in city driving, this model redefined expectations for a midsize luxury sedan. Notably, the E250 BlueTEC was the first diesel E-Class variant to offer the option of 4MATIC all-wheel drive, maintaining its class-leading fuel economy even with this added feature. When equipped with optional 4MATIC, the fuel efficiency remained impressively high at 42 mpg highway and 27 mpg city, surpassing all other diesel sedans in highway fuel economy estimates.
The heart of the 2014 Mercedes E250 BlueTEC’s exceptional performance is its advanced high-efficiency turbodiesel engine. This all-aluminum, in-line four-cylinder powerhouse incorporates four valves per cylinder and dual overhead camshafts with vane-type variable valve timing. This sophisticated engine configuration allows it to generate 195 horsepower and a robust 369 lb-ft of torque. To counteract the inherent vibrations associated with in-line four-cylinder engines, Mercedes-Benz engineers integrated two Lanchester balance shafts. These shafts, spinning at twice the crankshaft speed within low-friction roller bearings, ensure a remarkably smooth and refined driving experience. Drivers immediately notice the benefits of the two-stage turbocharged system in everyday driving. Turbo lag is virtually eliminated, resulting in instantaneous throttle response and a broad, consistent torque curve across the entire engine speed range. This translates to noticeably enhanced performance, with the impressive 369 lb-ft of torque readily available from as low as 1,800 rpm.
Further enhancing its performance and reducing emissions, the Mercedes E250 BlueTEC 2014 features a refined BlueTEC direct fuel injection system. Operating at an immense 2,000 bar (28,400 pounds per square inch), this high fuel pressure system optimizes both power output and exhaust emissions. The increased ignition fuel pressure allows the four piezo injectors to make even more precise adjustments in fuel delivery, adapting to changes in engine load and speed. This advanced system places the four-cylinder diesel engine at the forefront of passenger vehicle diesel technology, delivering both power and environmental responsibility.
To ensure the Mercedes E250 BlueTEC 2014 adhered to stringent exhaust emission regulations across all 50 U.S. states, Mercedes-Benz implemented the BlueTEC system with AdBlue injection. This technology makes the diesel engine as clean as a modern gasoline engine. The AdBlue system uses a water-based urea solution, conveniently accessible through the fuel filler door. This solution is stored in a dedicated small tank and metered into the exhaust in minute quantities. As a result, AdBlue refills are only required during routine scheduled maintenance. When AdBlue is injected into the pre-cleaned exhaust gas, it releases ammonia (NH3), which then converts nitrogen oxides into harmless nitrogen and water within a downstream catalytic converter. This process, known as Selective Catalytic Reduction (SCR), represents the most effective exhaust gas after-treatment method currently available, ensuring the Mercedes E250 2014 is environmentally conscious without compromising performance.
Reflecting the growing popularity of all-wheel-drive systems, particularly in the luxury market, the Mercedes E250 BlueTEC 2014 offered optional 4MATIC four-wheel drive. Modern all-wheel-drive systems have become increasingly sophisticated, minimizing weight and fuel-efficiency penalties while providing significant benefits in year-round traction and stability, whether on wet or dry roads. The latest Mercedes-Benz 4MATIC system is seamlessly integrated into the 7-speed automatic transmission of the E250 BlueTEC, fitting within the standard body and utilizing the existing front suspension. Innovative engineering measures have further improved fuel efficiency by minimizing the energy required to operate the additional gears and shafts of the 4MATIC system. Mercedes-Benz anticipated a balanced adoption rate of around 50/50 nationwide between rear-wheel drive and 4MATIC for the E250 BlueTEC, with significantly higher 4MATIC preference in northern states where all-wheel drive is highly valued for its winter driving capabilities.
Mercedes-Benz’s unwavering commitment to safety is evident in the 2014 E-Class, which incorporates over 30 standard and optional active and passive safety systems under the umbrella of Mercedes-Benz Intelligent Drive. This comprehensive suite of technologies aims to achieve accident-free driving in real-world conditions. The optional Driver Assistance Package, available for $2800 across the 2014 E-Class sedan, wagon, coupe, and cabriolet models, further elevates safety and driver convenience. This package includes:
- DISTRONIC PLUS with Steering Assist: A radar-based cruise control system that provides semi-autonomous steering inputs, functioning from 0-124 mph depending on road conditions.
- PRE-SAFE Brake with pedestrian detection: Utilizes radar and stereo cameras to detect vehicles and pedestrians ahead, proactively adjusting braking force and applying full brakes if necessary to mitigate or prevent collisions.
- PRE-SAFE PLUS: Employs rear-facing radar to anticipate potential rear-end collisions, preparing the vehicle to minimize injury risk for occupants in the event of an impact.
- BAS PLUS with Cross Traffic Assist: Leverages stereo cameras to monitor cross-traffic situations and provides appropriate brake assistance to enhance safety at intersections and junctions.
- Active Lane Keeping Assist and Active Blind Spot Protection: These systems intervene with corrective one-sided braking to help drivers maintain lane position and avoid collisions with vehicles in blind spots.
The Mercedes E250 BlueTEC sedan served as the entry-level model within the 2014 E-Class lineup, offering a compelling combination of clean diesel powertrain technology and competitive pricing. Starting at $51,400, the E250 BlueTEC provided an accessible gateway to the E-Class experience. The broader 2014 E-Class portfolio and pricing structure (excluding the $925 destination & delivery charge) included:
- E250 BlueTEC sedan (rear-wheel drive) – $51,400
- E350 sedan (rear-wheel drive) – $51,900
- E350 Coupe (rear-wheel drive) – $52,200
- E250 BlueTEC 4MATIC sedan – $53,900
- E350 4MATIC sedan – $54,400
- E350 4MATIC Coupe – $54,700
- E400 Hybrid sedan (rear-wheel drive) – $56,700
- E350 4MATIC wagon – $58,600
- E550 Coupe (rear-wheel drive) – $59,000
- E350 Cabriolet (rear-wheel drive) – $60,200
- E550 4MATIC sedan – $61,400
- E550 Cabriolet (rear-wheel drive) – $67,300
- E63 AMG 4MATIC sedan – $92,770
- E63 AMG S-Model 4MATIC sedan – $99,770
- E63 AMG S-Model 4MATIC wagon – $102,370
Beyond the E250 BlueTEC sedan, Mercedes-Benz expanded its BlueTEC clean diesel offerings in the 2014 model year to include models such as the GL350 BlueTEC 4MATIC (V6), ML350 BlueTEC 4MATIC (V6), and GLK250 BlueTEC 4MATIC, demonstrating a broader commitment to efficient diesel technology across its vehicle range.
In conclusion, the 2014 Mercedes-Benz E250 BlueTEC stands out as a remarkable vehicle that successfully blends luxurious comfort and advanced technology with exceptional fuel efficiency. Its innovative diesel engine, coupled with the option of 4MATIC all-wheel drive and a comprehensive suite of safety features, makes it a compelling choice for discerning drivers seeking a refined and economical midsize luxury sedan.
