Positioning:
The 2006 Mercedes-Benz C-Class (W203 generation) represented the brand's entry into the compact executive sedan segment, aiming to attract younger buyers while retaining traditional Mercedes-Benz appeal. The C230 model, specifically, offered a balance of performance and luxury, often positioned as a slightly more performance-oriented option within the C-Class lineup.
Competitors:
Primary competitors for the 2006 C-Class included the BMW 3 Series (E46/E90), Audi A4 (B6/B7), Lexus IS, and Acura TL.
Features:
Supercharged engine for responsive power, Mercedes-Benz build quality and safety, sophisticated interior design, optional advanced infotainment systems (COMAND), and a comfortable ride.
Primary Areas:
Introduction, Instrument Cluster, Entertainment Systems, Climate Controls, Lights, Driver Controls, Locks and Security, Seating and Safety Restraints, Driving, Customer Assistance, Reporting Safety Defects (U.S. only), Cleaning, Maintenance and Specifications, Engine Compartment, Engine Oil, Battery, Fuel Information, Air Filter(s), Part Numbers, Refill Capacities, Lubricant Specifications, Accessories.
Estimated Pages:
Approximately 250-300 (typical for this model and year)
Systems:
Instrument Cluster Displays and Indicators, Audio System Operation (COMAND/Audio 20), Climate Control System (Manual/Automatic), Exterior and Interior Lighting Functions, Steering Wheel Controls, Power Window and Lock Operation, Central Locking System, Anti-theft Alarm System, SRS Airbag System, Seat Adjustment and Restraint Systems, Parking Assistance Systems, Cruise Control, Traction Control (ASR/ESP), Engine Lubrication, Cooling System, Ignition System, Fuel Delivery System, Air Intake System, Battery Servicing, Tire Pressure Monitoring System (TPMS), Wiper and Washer Systems, Exterior Mirror Adjustment, Interior Lighting, Door/Trunk Operation.
Procedures:
Understanding Warning Lamps and Indicators, Basic Operation of Infotainment and Climate Controls, Proper Use of Lighting Systems, Seat and Mirror Adjustment for Optimal Safety, Child Seat Installation Guidelines, Emergency Procedures, Jump Starting the Battery, Tire Inflation and Changing Procedures, Refueling Procedures, Checking and Topping Off Fluids, Understanding Maintenance Service Indicators (e.g., 'Service A', 'Service B'), Basic Cleaning and Care of Interior and Exterior Surfaces, Operation of Keyless Go (if equipped), Understanding Door Locking Modes.
Depth:
Comprehensive owner-level information, including operational guidance, basic maintenance checks, fluid specifications, and an overview of vehicle systems. It does not include detailed diagnostic procedures or repair instructions typically found in a Service Manual.
Engine Details:
2.3L (2295 cc) M271 Inline-4 Cylinder Engine with Supercharger (Kompressor)
Horsepower:
189 hp @ 5500 rpm
Torque:
200 lb-ft (270 Nm) @ 3500-4500 rpm
Fuel Delivery:
Bosch Motronic electronic fuel injection with Sequential Port Injection.
Layout:
Front-engine, Rear-wheel drive (RWD) or available 4MATIC All-wheel drive (AWD).
NHTSA Front Impact:
5-Star (for driver and front passenger)
Active Safety:
Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (ASR), Brake Assist (BAS).
Passive Safety:
Front dual-stage airbags, front side-impact airbags, front and rear side curtain airbags, front seatbelt pre-tensioners, active front head restraints.
Infotainment Systems:
Base system typically includes Audio 20 with CD player and AM/FM radio. Optional COMAND (Cockpit Management and Navigation) system provided a larger color display, navigation capabilities, and enhanced audio features. Auxiliary input for external devices was often available.
Driver Assistance Features:
Cruise Control, Rain-Sensing Wipers, Automatic Headlights, Optional Parking Assist Sensors (front and rear), Optional Bi-Xenon Headlights with Adaptive Front-lighting System.
Connectivity Features:
Bluetooth telephony (via UHI or SAP adapter, depending on COMAND version), voice control (Linguatronic) for COMAND systems.
Interval Guidance:
The manual details the flexible 'Service A' and 'Service B' intervals, triggered by the vehicle's Assyst Plus system, based on driving conditions. Typically, oil changes are recommended every 10,000 miles or 1 year. Other services (filters, spark plugs, coolant) are based on mileage and time, often around 30,000-60,000 miles.
Engine Oil:
API SM or higher, ACEA A3/B4, SAE 0W-40 or 5W-40. Refer to manual for precise MB-approved specifications (e.g., MB 229.5).
Coolant:
Mercedes-Benz approved Antifreeze/Coolant (e.g., G05 or similar phosphate-free silicate-stabilized coolant). Mix 50/50 with distilled water.
Brake Fluid:
DOT 4 (MB 331.0 specification recommended).
Transmission Fluid Auto:
MB 236.10 or MB 236.12 specification automatic transmission fluid.
Power Steering Fluid:
MB 236.3 specification hydraulic fluid.
Common W203 Issues:
The M271 supercharged engine is known for potential oil leaks from the valve cover gasket and intake manifold, occasional issues with the supercharger clutch or belt, and potential for the 'check engine' light due to the secondary air injection system. The W203 chassis can experience front suspension component wear (e.g., control arm bushings) and occasional electrical gremlins, particularly related to the CAN bus system or SAM modules. Sunroof drain plugs can become blocked, leading to water ingress in the cabin. The plastic components in the cooling system can degrade over time.
Oil Filter Example:
Bosch 3330 / Mann-Filter HU 816 x / Mercedes-Benz A 000 180 26 09 (examples, always verify with VIN)
Air Filter Example:
Mann-Filter C 24 228 / Bosch 7264 / Mercedes-Benz A 271 094 02 01 (examples, always verify with VIN)
Engine Oil Capacity:
Approx. 5.7 quarts (5.4 liters) with filter change (M271 engine).
Coolant Capacity:
Approx. 7.1 quarts (6.7 liters).
Chassis Lubrication:
Refer to specific chassis lubrication points for grease types (e.g., lithium-based grease for suspension components).
Heritage:
Mercedes-Benz has a long-standing reputation for engineering excellence, safety, and luxury, dating back to the invention of the automobile.
W203 Generation:
The W203 C-Class was introduced in 2000 as a replacement for the W202. The 2006 model year represented a mid-cycle refresh for the W203, incorporating updated styling, interior refinements, and improved technology.
Manufacturing Location:
Primarily manufactured in Germany (Sindelfingen and Bremen) and also in South Africa and Mexico.
