🏷️ Basic Information

Make:

Mercedes-Benz

Model:

C230

Year:

2006

Chassis Code:

W203

Engine Code:

M271.942 (for supercharged 1.8L)

👋 Introduction

Market Position:

The 2006 Mercedes-Benz C230 (W203 generation) represented the entry-level luxury sedan and coupe for the brand, competing with models like the BMW 3 Series, Audi A4, and Lexus IS. It offered a blend of performance, comfort, and sophisticated engineering characteristic of Mercedes-Benz.

Competitive Analysis:

Competed directly with established luxury sport sedans, emphasizing refinement and build quality. Key advantages included its brand prestige, advanced safety features, and the option of the potent supercharged engine. The W203 platform was known for its robust construction.

Key Features:

Supercharged inline-4 engine, rear-wheel drive (optional 4MATIC all-wheel drive), advanced safety systems (ABS, ESP), premium interior materials, optional COMAND infotainment system, and a comfortable ride with capable handling.

📋 Manual Details

Coverage Areas:

Engine, Drivetrain, Suspension, Steering, Brakes, Electrical Systems, HVAC, Bodywork, Interior, Diagnostic Procedures

Page Count:

Detailed digital content, equivalent to approximately 1500+ printed pages

Manual Type:

Official Service and Repair Manual Software

Language:

English

Format:

Digital Software (downloadable)

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Management (ECU), Fuel System, Ignition System, Emission Controls, Cooling System, Lubrication System, Intake & Exhaust Systems, Automatic Transmission (722.6), Manual Transmission (if applicable), Drive Axles, Differential, Suspension (Front & Rear), Steering System, Power Steering, Brake System (ABS, ESP), Antilock Braking System (ABS), Electronic Stability Program (ESP), Parking Brake, Electrical System (12V), Battery, Charging System, Starting System, Lighting System, Instrument Cluster, Body Control Module (BCM), HVAC System, Air Conditioning, Heating, Airbags, SRS System, Chassis Electrical, Interior Electrical, Exterior Electrical, Body & Frame, Doors, Windows, Seats, Infotainment System, Diagnostic Trouble Codes (DTCs) and Troubleshooting

Procedures Included:

Routine Maintenance, Scheduled Service, Engine Overhaul, Transmission Overhaul, Brake System Repairs, Suspension Component Replacement, Steering System Repairs, Electrical Diagnosis and Repair, HVAC System Servicing, Body Panel Alignment and Repair, Interior Component Repair, Software Updates and Diagnostics, Specialized Tool Usage, Torque Specifications, Wiring Diagrams, Component Location Charts, Troubleshooting Flowcharts, Diagnostic Procedures for all major systems

Technical Depth:

Comprehensive and highly detailed, covering everything from basic fluid changes and filter replacements to complex engine and transmission rebuilds, advanced electrical diagnostics, and bodywork procedures. Suitable for professional technicians and advanced DIY mechanics.

Diagnostic Tools Covered:

Procedures for using Mercedes-Benz proprietary diagnostic tools such as STAR DIAGNOSIS (or equivalent aftermarket scan tools with Mercedes-Benz protocols) are detailed, including interpreting live data, actuator tests, and performing control module programming/coding.

📊 Manual Specifications

File Format:

Proprietary software or PDF (depending on licensing/delivery). Searchable text and hyperlinked sections are standard for official digital manuals.

Print Quality:

N/A (Digital Format)

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

Searchability:

Excellent. Digital format allows for keyword searches of specific procedures, components, or diagnostic codes.

⚙️ Engine Specifications

Primary Engine:

1.8L (1796 cc) Supercharged Inline-4 Cylinder (M271.942)

Horsepower:

189 hp @ 5500 rpm

Torque:

200 lb-ft (270 Nm) @ 3000-4300 rpm

Fuel System:

Electronic Fuel Injection (Bosch Motronic ME 2.8)

Fuel Type:

Premium Unleaded Gasoline (91 Octane or higher recommended)

Bore X Stroke:

82.0 mm x 85.0 mm

Compression Ratio:

8.8:1

Engine Management:

Electronic control unit (ECU) with integrated ignition and fuel management, dual overhead camshafts (DOHC), 4 valves per cylinder.

Timing Mechanism:

Timing chain with dual overhead camshafts (DOHC), 4 valves per cylinder.

🔧 Transmission

Standard Transmission:

6-Speed Manual Transmission

Optional Transmission:

5-Speed Automatic Transmission (722.6 '7G-TRONIC' precursor for some later models, but 5-speed was common in C230)

Features:

Selectable drive modes (Comfort/Sport) for automatic transmission, torque converter lock-up for improved efficiency.

Transmission Fluid Spec Auto:

MB Specification 236.10 or 236.12 Automatic Transmission Fluid (ATF)

Transmission Fluid Spec Manual:

MB Specification 235.10 (or equivalent GL-4 manual transmission fluid)

📐 Dimensions

Length:

177.9 inches (4520 mm)

Width:

68.7 inches (1745 mm)

Height:

55.5 inches (1410 mm)

Wheelbase:

106.7 inches (2710 mm)

Curb Weight:

Approximately 3300-3500 lbs (1497-1588 kg)

Gross Vehicle Weight Rating:

Approximately 4400 lbs (2000 kg)

Trunk Capacity:

12.6 cubic feet (357 liters)

🛡️ Safety Features

NHTSA Front Crash Rating:

5-Star (for driver and front passenger)

IIHS Front Crash Rating:

Good

Active Features:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (TCS), Brake Assist (BAS)

Passive Features:

Frontal airbags, front side-impact airbags, front and rear head curtain airbags, active front head restraints, 3-point seatbelts with pretensioners.

Seatbelt Features:

3-point inertia-reel seatbelts with height adjustment and pretensioners for all seating positions.

💡 Technology Features

Infotainment System:

Optional COMAND (Cockpit Management and Navigation) system, offering CD player, radio, optional navigation, and climate control integration. Other models featured Audio 20 or Audio 5.

Driver Assistance Features:

Cruise Control, Speed-Sensitive Power Steering, Rain-Sensing Wipers (optional), Auto-Dimming Rearview Mirror.

Connectivity Options:

Optional Bluetooth hands-free communication system, though integration was basic compared to modern standards.

Lighting Features:

Halogen projector headlights, optional Bi-Xenon headlamps with automatic leveling and cornering illumination, LED taillights.

🔧 Maintenance

Service Interval Oil Change:

Every 10,000 miles (16,000 km) or 1 year, whichever comes first (using synthetic oil). Check service indicator (ASSYST) for precise recommendations.

Service Interval Major Service:

At specific mileage intervals (e.g., 30,000, 60,000, 100,000 miles), covering a broader range of checks and replacements as per the vehicle's service schedule (Service A, B, C, etc.).

Engine Oil Type:

Synthetic Engine Oil, MB Specification 229.5 (e.g., 0W-40 or 5W-40)

Engine Oil Capacity:

Approximately 6.0-6.5 liters (6.3-6.9 US quarts) with filter change.

Coolant Type:

MB Specification 325.0 (Antifreeze/Coolant, Blue or Green)

Brake Fluid Type:

DOT 4 Plus (MB Specification 331.0)

Power Steering Fluid Type:

MB Specification 236.3 (ATF Dexron III or equivalent)

Clutch Fluid Type Manual:

Brake Fluid DOT 4 Plus (MB Specification 331.0)

Known Issues:

Variable intake manifold runner flaps (can fail and cause performance issues), Mass Air Flow (MAF) sensor issues, Crankshaft position sensor failures, ignition coil failures, ABS/ESP module issues, oil leaks from valve cover gaskets and oil cooler seals, strut mount wear, occasional transmission control module (TCM) problems.

Oil Filter Part Number:

Typically 000 180 26 09 or equivalent (e.g., Mann HU 821 x)

Air Filter Part Number:

Typically 271 090 02 01 or equivalent (e.g., Mann C27710)

Cabin Filter Part Number:

Typically 203 830 02 18 or A 203 830 02 18 (can be standard or activated carbon)

Spark Plug Recommendation:

Champion RC10 PYPB4, NGK PFR5G-11A, or Bosch Y7MPP33 (check for specific revisions)

📚 Vehicle History

Brand Heritage:

Mercedes-Benz has a long and storied history dating back to the late 19th century, renowned for pioneering automotive innovations, luxury, safety, and engineering excellence.

Model Evolution:

The C-Class represents Mercedes-Benz's compact executive car segment. The W203 generation, produced from 2000-2007, succeeded the W202 and was characterized by a more rounded and modern design, improved safety, and new powertrain options like the supercharged M271 engine introduced for the C230.

Production Years:

2000-2007 (W203 generation). The 2006 C230 was a mid-cycle refresh variant.

Production Locations:

Primary manufacturing was in Bremen, Germany. Assembly also took place in other global locations.

Model Designation:

C230 signifies the positioning within the C-Class lineup, typically indicating a specific engine size and performance level at the time of introduction for that model year. The '230' designation in 2006 referred to the 1.8L supercharged engine.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 2006 C230 variant are not widely publicized as a standalone model, the Mercedes-Benz C-Class W203 generation generally received positive reviews for its build quality, safety, and comfort. It was a strong contender in its segment.