Segment:
Compact Executive Sedan
Brand Perception:
Luxury, Engineering Excellence, Durability
Key Competitors:
BMW 3 Series (E30), Audi 80/90, Volvo 240/740, Lexus ES 250
Design Philosophy:
Bauhaus-inspired, functional and robust design
Powertrain Emphasis:
Smooth inline-six power delivery, renowned Mercedes-Benz reliability
Benefit:
Empowers owners and technicians to perform accurate maintenance and repairs, preserving vehicle value and performance.
Powertrain:
Engine, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System, Automatic Transmission
Chassis:
Suspension (Front & Rear), Steering System, Braking System (Front & Rear), Wheels & Tires
Electrical:
Engine Control Unit (ECU), Ignition System, Lighting System, Instrumentation, Wiper/Washer System, Power Accessories (Windows, Locks, Mirrors), Audio System, Climate Control Electricals
Body And Interior:
Body Panels, Doors, Hood, Trunk Lid, Bumpers, Seats, Interior Trim, HVAC System (Mechanical Components)
Maintenance:
Routine Service, Fluid Changes, Filter Replacements, Lubrication Points
Diagnostics:
Troubleshooting Guides, Symptom-Based Diagnostics, Component Testing Procedures
Repair:
Component Removal & Installation, Overhaul Procedures, Adjustments
Specifications:
Torque Specifications, Clearances, Tolerances, Electrical Values
Depth:
Comprehensive, from basic maintenance to advanced diagnostics and full rebuilds
Engine Type:
Inline 6-cylinder, SOHC
Displacement:
2.6 Liters (2599 cc)
Horsepower:
160 hp @ 5700 rpm (approx.)
Torque:
177 lb-ft @ 4400 rpm (approx.)
Injection Type:
Bosch KE-Jetronic Fuel Injection (or similar mechanical/electronic hybrid)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Coolant Type:
Mercedes-Benz approved coolant (e.g., G05 or equivalent) mixed with distilled water
Oil Capacity:
7.5 Liters (with filter) (approx.)
Recommended Oil Viscosity:
SAE 15W-40 or 10W-40 (depending on climate, consult manual for exact MB specs)
Ignition System:
Electronic Ignition with Distributor
Type:
4-speed Automatic Transmission (4G-Tronic)
Type:
5-speed Manual Transmission
Automatic Modes:
Standard (S) and Economy (E) modes
Automatic Transmission Fluid Type:
Mercedes-Benz 236.1 specification (e.g., ATF Dexron III equivalent)
Automatic Transmission Fluid Capacity:
Approx. 6-7 Liters (for full service)
Crash Test History:
While official specific ratings for this era are less standardized than today, the W201 chassis was recognized for its robust safety cell and designed to meet stringent safety standards of its time.
Brakes:
Front: Ventilated Disc, Rear: Solid Disc
ABS:
Anti-lock Braking System (ABS) often standard or optional on higher trims
Airbags:
Driver's airbag typically standard from mid-production onwards, passenger airbag optional/later addition.
Seatbelts:
3-point inertia-reel seatbelts front and rear
Body Structure:
Reinforced safety cell, crumple zones
Audio System:
Factory AM/FM cassette stereo system, often with amplifier. Manual covers basic troubleshooting and component identification.
Cruise Control:
Optional cruise control system available, covered in the manual.
HVAC System:
Manual or automatic climate control systems. Manual details component operation, refrigerant, and basic diagnostics.
Wiring Diagrams:
Detailed electrical wiring diagrams are a key feature of this manual, crucial for diagnosing electronic issues.
Oil And Filter Change:
Every 10,000 km (6,000 miles) or 12 months, whichever comes first.
Air Filter Replacement:
Every 30,000 km (18,000 miles) or 24 months.
Fuel Filter Replacement:
Every 30,000 km (18,000 miles) or 24 months.
Spark Plug Replacement:
Every 50,000 km (30,000 miles) or 48 months (for standard plugs).
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid Type:
Mercedes-Benz specification (e.g., CHF 11S or equivalent, consult manual)
Common Problems 1:
Head gasket leaks (especially at the rear of the engine), oil leaks from valve cover and oil pan gaskets, front suspension ball joint wear, vacuum hose degradation, MAF sensor issues (if applicable to later models in the range), fuel distributor/accumulator issues on older KE-Jetronic systems.
Common Problems 2:
Wiring harness degradation (especially insulation), window regulator failures, evaporator core leaks (causing AC issues), dashboard instrument cluster failures.
Complexity:
Designed with Mercedes-Benz engineering, requiring specific tools and knowledge for optimal repair. The manual addresses this complexity.
Mercedes Benz Legacy:
Pioneering safety, engineering, and quality since the early 20th century.
W201 Introduction:
Introduced in 1982 as the 'Baby Benz', aiming to offer Mercedes-Benz quality and engineering in a more compact and affordable package.
190E 2.6 Introduction:
The 2.6-liter engine (M103) was introduced in 1986, offering a significant upgrade in performance and smoothness over the earlier 2.3 and 2.3-16 models.
Production Period:
1982-1993
Manufacturing Plant:
Bremen, Germany
