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Mercedes 300 Adenauer

Otherwise known as the W186, the 300 Adenauer by Mercedes was produced between 1951 and 1957. With comparisons to Maybach, the 300 Adenauer was Mercedes’ most significant and most prestigious vehicle.

Three versions of the 300 series were produced in succession as 300a, 300b, 300c. Equal in features, price, and performance to the rival Rolls-Royce Silver Cloud, the W186 held its own. 

Politicians and business leaders loved the look of 300 Adenauers. To complement the car’s consumer base, glass partition, VHF mobile telephone, and dictation machines were included in various models. 

Konrad Adenauer inspired the name of the 300 vehicles as he employed various versions of the W186 and 189 during his tenure as Chancellor of Germany. Custom features continued with writing desks, sirens, curtains, and even sunroofs. 

The 300 Adenauer was technologically advanced as it shared many design innovations and components similar to the iconic 300 SL with the supreme engine, suspension, and chassis. 

300a Model

Four-door 300’s were introduced at the Frankfurt Motor Show in 1951 and entered series production the same year. 300’s were made available in saloon and cabriolet models with top of the line bodywork. New 3.0-liter overhead cam, aluminum head M186 straight-six was coupled with a 4-speed manual gearbox. 

With a design aimed to give reliable service under prolonged use, the 300 engine had deep water jackets, thermo controlled oil cooling, copper lead bearings, and a hardened crankshaft. Under most conditions, the 300 could sustain cruising rates up to its top speed. 

Solid handling on the 300 was achieved through combining a rigid X-shaped ovoid steel tube frame with four-wheel independent suspension. All around hydraulic drum brakes were present while recirculating ball steering came into play during 1952. 

300b Model

Introduced in March 1954, vacuum-assisted power brakes, and front door vent windows were added. Engine power was increased to 125 PS via different Solex carburetors with an increased compression ratio of 7.5:1.

300c Model 

Making its debut in September 1955, a larger rear window was added to the 300c with optional 3-speed automatic transmission. Convertibles ended up costing almost a third more than standard models. 1956 featured the release of a type 300 limo. 

300d Model

300 Adenauer models were aimed at the American public toward the start. The outstanding quality that the 300 Adenauer presented was matched by a high price tag. High profile customers such as Frank Lloyd Wright sported the vehicle and solidified the car’s selective status. 

Consistent improvements led to 300b, and 300c models not long after the initial 300 models were released. 300d models led to an entirely new body with improved ride and increased rear legroom. While the style of 300 models remained ultimately the same, small details brought the car up to date through the years.

A longer hood on the 300d gave the 300 series a more graceful look and provided ample room for an updated 3-liter six-cylinder engine. Bosch mechanical fuel-injection raised horsepower levels to 180. Power steering being standard led to the 300d being a better overall driving experience. 

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