Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals

MB 186 - W186 Service Repair Manuals

Mercedes W186 Service Repair Manuals

The Mercedes-Benz W186 model 300 was a four-door luxury tourer produced by Mercedes-Benz between 1951 and 1957. The company's largest and most prestigious automobile, it was the Maybach of its day, elegant, powerful, exclusive, and expensive.

Three versions of the W186 were produced in succession, known informally as the 300a (or simply 300), 300b, and 300c. An enlarged "300d" variant built on the W189 chassis succeeded it in late 1957. Jump to Manuals

Also referred to as a "Type 300", the W186 was equal in features and price but superior in performance to the rival Rolls-Royce Silver Cloud. Favored by statesmen and business leaders, it offered options such as a glass partition, VHF mobile telephone, and dictation machine.

All but hand-built as the company flagship, the W186 is often identified as an Adenauer after Konrad Adenauer, the first Chancellor of the Federal Republic of Germany, who employed six custom cabriolet, hardtop saloon, and landaulet versions of the W186 and its successor W189 during his 1949-1963 tenure. Among the custom features in these "parade cars" were writing desks, sirens, curtains, dividing partitions, sunroofs, and half-roof "landaulet" configurations.

Technologically advancements of the 300 shared numerous design innovations and mechanical components with the iconic Mercedes-Benz 300 SL "Gullwing", including engine, suspension, and chassis.

Mercedes Benz W186 Production Specs Sheet

The four door 300 (W186) was introduced at the Frankfurt Motor Show in April 1951 and entered series production in November 1951. It had no "a" designation, which was informally added, along with the "b" and "c", by later enthusiasts seeking to distinguish the three W186 generations.

Available as both a saloon and cabriolet, it featured graceful modernist bodywork atop Mercedes' proven X-frame chassis. An all new 3.0 L (2996 cc/182 in³) overhead cam, aluminum head M186 straight-6 was coupled to a 4-speed all-synchromesh manual gearbox. Twin downdraft Solex carburetors and an innovative diagonal head-to-block joint that allowed for oversized intake and exhaust valves produced 115 PS (85 kW; 113 hp) at a 6.4:1 compression ratio..

Mercedes Benz 186 - W186  Models

Model Chassis Code Years Produced # Built Engine




4563 (+2)


300 cabriolet D








1639 (+10)


300b cabriolet D








1429 (+3)


300c cabriolet D





 300c production includes 62 long wheel base versions Production numbers in brackets are chassis only

Mercedes Benz W186 Series Workshop Manuals

Mercedes Benz W186 Classic Car Workshop Manuals

W186 Mercedes Benz vehicles were manufactured in the years 1951, 1952, 1953, 1954, 1955, 1956, 1957, and included models 300, 300 Cabriolet D, 300b, 300b Cabriolet D , 300c, 300c Cabriolet D.

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Mercedes W186 Workshop Manuals CDW186 English Language Service Manual Collection
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Mercedes W186 Service Repair ManualsDownload Desktop PC Installation Version 345mb
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Mercedes W186 300B Owners Manual pdf

Mercedes W186 300C Owners Manual pdf

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Download: Mercedes Benz M186 Engine Service Manual

Mercedes M186 M188 M199 Multi Engine Service Repair ManualMercedes M186 Engine Repair Manual
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Variations: M186, M188, M199
Application: W186, W188

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Mercedes W186 Chassis Body ManualDownload Desktop PC Installation Version 76.1mb
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Mercedes W186 Electrical ManualDownload Desktop PC Installation Version 28.9mb

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Mercedes Electrical Wiring Diagram Schematic

Mercedes Benz W186 Electrical Diagrams .pdf
Electrical Diagram Schematic + Wiring Harness Loom

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Mercedes W186 Maintenance ManualDownload Desktop PC Installation Version 46.3mb

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Mercedes Scheduled Service ChartMB W186 Scheduled Service Charts

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Download: Mercedes Benz W186 Parts Catalog

Mercedes W186 Parts Picture & Number Catalog

Mercedes Benz W186 300C Parts Catalog

  • MB W186 300 Parts Catalog .pdf
    • Language: English
    • Download: 13.4mb, .pdf
    • Contents: 649 pages
    • Model Year: 1951-1957
    • Price: $14.95

Mercedes Benz W186 Supplements