🏷️ Basic Information

Make:

Mercedes-Benz

Model:

C-Class

Model Generation Code:

W205

Model Year:

2014

Generation Start Year:

2014

Generation End Year:

2021

👋 Introduction

Positioning:

The W205 C-Class marked a significant evolution for Mercedes-Benz in the compact executive sedan segment, introducing a more premium interior, advanced technology, and a focus on comfort and efficiency. It competed directly with rivals like the BMW 3 Series and Audi A4.

Key Competitors:

BMW 3 Series (F30), Audi A4 (B8/B9), Lexus IS, Infiniti Q50.

Design Language:

Understated elegance, fluid lines, and a sophisticated overall aesthetic. Introduction of the 'Sensual Purity' design philosophy.

Technology Highlights:

Advanced driver assistance systems (ADAS), optional AIRMATIC air suspension, head-up display, large central infotainment screen, and advanced connectivity options.

📋 Manual Details

Coverage Scope:

All models and all repairs A-Z

Estimated Page Count:

1500-2000+

Type:

Official Factory Service & Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine:

Detailed diagnostics, repair, and overhaul for all W205 gasoline and diesel engines (e.g., M274, OM651, OM626).

Transmission:

Service, repair, and troubleshooting for 7G-TRONIC PLUS (722.9), 9G-TRONIC (725.0) automatic transmissions, and manual transmissions if applicable.

Drivetrain:

Front-wheel drive, rear-wheel drive, 4MATIC all-wheel drive system servicing, differential, drive shafts, and axles.

Suspension Steering:

Front and rear suspension components, shock absorbers, springs, control arms, power steering system (electric and hydraulic), wheel alignment.

Brakes:

Disc brakes, ABS, ESP, brake fluid service, caliper and rotor replacement, parking brake system.

Electrical Electronics:

Comprehensive coverage of the vehicle's electrical system, including battery, charging system, starter, lighting, fuse box diagrams, control modules (ECU, TCU, BCM), and wiring schematics.

Climate Control:

HVAC system diagnostics, refrigerant service, blower motor, evaporator, condenser, and control panel repair.

Body Interior:

Body panel removal and installation, door mechanisms, interior trim, seating systems, glass replacement, and convertible top operation (if applicable).

Infotainment Navigation:

COMAND APS, Audio 20, navigation system servicing, and component replacement.

Chassis:

Comprehensive details on chassis components, including steering rack, subframes, and associated hardware.

Maintenance:

Detailed scheduled maintenance tasks including oil changes, filter replacements, fluid checks and changes, spark plug replacement, and brake inspections.

Troubleshooting:

Diagnostic flowcharts, symptom-based troubleshooting guides, and diagnostic trouble code (DTC) interpretation for all major systems.

Repair Overhaul:

Step-by-step instructions for component removal, repair, and reinstallation, including engine rebuilds, transmission overhauls, and suspension component replacement.

Diagnostics:

Specific diagnostic procedures using Mercedes-Benz proprietary diagnostic tools (e.g., STAR DIAGNOSIS/XENTRY) and general diagnostic principles.

Wiring Schematics:

Detailed electrical wiring diagrams for all vehicle systems, including pinouts and connector views.

Body And Paint:

Information on body repair, structural integrity, and paintwork procedures.

Depth:

Comprehensive from basic maintenance and fluid checks to advanced component diagnostics, electrical system troubleshooting, and complete engine/transmission rebuild procedures.

Diagnostic Tools Reference:

Procedures implicitly or explicitly reference the use of Mercedes-Benz diagnostic equipment (e.g., XENTRY/DAS) for system checks and programming.

📊 Manual Specifications

Format:

Searchable PDF with hyperlinked table of contents for easy navigation.

Quality:

High-resolution digital scans ensuring clear text and diagrams.

Type:

N/A (Digital Format)

Type:

N/A (Digital Format)

Manual Completeness:

Exhaustive, covering every aspect of vehicle maintenance, diagnosis, and repair as performed by dealership technicians.

⚙️ Engine Specifications

Engine Code Example Gasoline:

M274 (2.0L Turbocharged Inline-4)

Engine Code Example Diesel:

OM651 (2.1L Turbocharged Inline-4 Diesel)

Horsepower Range:

Approximately 168 hp to 375 hp (depending on model variant like C300, C450 AMG, AMG C63).

Torque Range:

Approximately 221 lb-ft to 516 lb-ft (depending on model variant).

Fuel Delivery:

Direct injection (BlueDIRECT technology).

Fuel Type:

Premium Unleaded Gasoline (for gasoline engines), Diesel Fuel (for diesel engines).

🔧 Transmission

Transmission Type:

7G-TRONIC PLUS (722.9) 7-speed automatic (common).

Transmission Type 2:

9G-TRONIC (725.0) 9-speed automatic (introduced later in the generation).

Transmission Type Manual:

Manual transmission was available on select base models in certain markets but less common globally.

Drive Modes:

SELECTIVE DRIVE CONTROL (SPORT, COMFORT, ECO, MANUAL, INDIVIDUAL) allowing adjustment of engine, transmission, and chassis response.

📐 Dimensions

Wheelbase:

Approximately 2,840 mm (111.8 in)

Length:

Approximately 4,686 mm (184.5 in)

Width:

Approximately 1,810 mm (71.3 in)

Height:

Approximately 1,442 mm (56.8 in)

Trunk Volume Sedan:

Approximately 480 liters (17.0 cu ft)

Curb Weight Range:

Approximately 1,500 kg to 1,750 kg (3,300 lbs to 3,860 lbs) depending on engine and equipment.

🛡️ Safety Features

NHTSA Rating:

Generally achieved 5-star safety ratings in NHTSA tests (for models in relevant markets).

IIHS Rating:

Consistently received 'Top Safety Pick' or 'Top Safety Pick+' awards from the IIHS.

Electronic Stability Control:

Standard ESP (Electronic Stability Program) with crosswind assist.

Collision Prevention Assist Plus:

Standard or optional radar-based collision warning and autonomous braking system.

Driver Assistance Suite:

Optional DISTRONIC PLUS adaptive cruise control, ACTIVE PARK ASSIST, BLIND SPOT ASSIST, LANE KEEPING ASSIST.

Airbags:

Front airbags, front side airbags, window airbags, knee airbags (driver).

Pre Safe:

PRE-SAFE® occupant protection system that prepares the vehicle and occupants for an impending collision.

💡 Technology Features

System Name:

COMAND Online or Audio 20 with Garmin MAP PILOT.

Display:

Central high-resolution display (7-inch or 8.4-inch), controlled via the rotary dial and buttons on the center console.

Adaptive Cruise Control:

Optional DISTRONIC PLUS with Steering Assist for adaptive cruise control and semi-autonomous driving in traffic.

Parking Assist:

Optional ACTIVE PARK ASSIST with PARKTRONIC parking sensors and rearview camera.

Smartphone Integration:

Optional Apple CarPlay and Android Auto integration.

Internet Connectivity:

Optional internet access, Wi-Fi hotspot capability, and Mercedes-Benz emergency call system (eCall).

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles or 12 months (flexible service system - ASSYST PLUS, dependent on driving conditions).

Brake Fluid Change:

Every 2 years (refer to ASSYST PLUS).

Cabin Air Filter:

Annually or every 15,000 miles.

Engine Oil Specification:

MB-Approval 229.5 or 229.51 (e.g., Mobil 1 ESP 0W-40 or 5W-30 synthetic).

Transmission Fluid 7G Tronic:

MB-Approval 236.14 (e.g., ATF 7G).

Coolant Specification:

Mercedes-Benz G48 (Blue) or G05 (Pink) Antifreeze/Coolant.

Brake Fluid Specification:

DOT 4 PLUS (MB-Approval 331.0).

Common Wear Items:

Front suspension components (control arms, bushings), A/C blower motor, spark plugs (on some gasoline engines), oil leaks from valve cover gaskets or oil pan.

Electrical Gremlins:

Occasional issues with door control modules, parking sensors, or infotainment system glitches; often resolved by software updates or module resets.

Diesel Specific Concerns:

Potential for AdBlue system faults (diesel models), EGR valve issues, and DPF regeneration problems if not driven appropriately.

Engine Oil Capacity Example:

Approximately 6.5 liters (6.9 US quarts) for 2.0L gasoline engines (verify specific engine code).

📚 Vehicle History

Heritage Focus:

Mercedes-Benz has a long-standing reputation for luxury, engineering excellence, and safety, dating back to the invention of the automobile.

W205 Introduction:

The W205 generation marked a significant departure in design and technology from its predecessor (W204), embracing a more fluid and organic aesthetic.

Platform:

Based on the MRA (Modular Rear-wheel Drive Architecture) platform, shared with other Mercedes-Benz models.

Manufacturing Locations:

Primary manufacturing in Bremen, Germany; also produced in Alabama, USA; Beijing, China (for local market).

🏆 Awards & Recognition

Car Of The Year Nominations:

Often featured as a contender or winner in luxury sedan of the year categories by automotive publications.

Design Awards:

The W205 C-Class received numerous design awards globally, recognized for its elegant and modern styling.

Safety Award Examples:

IIHS Top Safety Pick+ for multiple model years within the W205 generation.