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Mercedes-Benz W186

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Mercedes-Benz 300
Mercedes-Benz 300 (W186)
Overview
ManufacturerMercedes-Benz
ProductionW186: 1951-1957
12,190 built[1]
W186 Saloon: 7,646
W186 Cabriolet D: 642
Body and chassis
ClassFull-size luxury car
Body style4-door saloon
4-door phaeton
4-door cabriolet
4-door limousine
LayoutFR layout
PlatformMercedes-Benz W186
Doors4
RelatedMercedes-Benz 300 S, Mercedes-Benz 300 SL
Powertrain
Engine2996 cc M186 SOHC I6
Transmission4-speed manual
3-speed automatic
Dimensions
WheelbaseW186: 3,050 mm (120.1 in)
LengthW186: 4,950 mm (194.9 in)
WidthW186: 1,840 mm (72.4 in)
Chronology
PredecessorMercedes-Benz 770 (wartime)
SuccessorMercedes-Benz W189

The Mercedes-Benz W186 Model 300 was a four-door luxury sedan produced by Mercedes-Benz between 1951 and 1957. It was the company's flagship model at the time, succeeding the World War II era W150. Three versions 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.

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[2] and Bentley S1. Favored by statesmen and business leaders, it offered options such as a glass partition, VHF mobile telephone, and dictation machine.

The W186 is often identified as an Adenauer after Konrad Adenauer, the first Chancellor of the Federal Republic of Germany (West 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 advanced,[3] the 300 was regarded as a "driver's" car, sharing numerous design innovations and mechanical components with the iconic Mercedes-Benz 300 SL "Gullwing", including engine, suspension, and chassis.

Models

300

The four door 300 (W186) was introduced at the Frankfurt Motor Show in April 1951 and entered series production in November 1951.[1] 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.

The W186 cabriolet displays the series' streamlined rear lines

Designed to give reliable service under prolonged hard use, the engine featured deep water jackets, thermostatically controlled oil cooling, copper-lead bearings and a hardened crankshaft. With no natural cruising speed, the car could sustain anything up to its maximum speed all day, road conditions permitting.[4]

A 1952 W186 (left) and 1962 300d (W189) (right)

The combination of a rigid X-shaped ovoid steel tube frame and four-wheel independent suspension provided surprisingly nimble handling. Double wishbones, coil springs, and a stabilizer bar were used up front and Mercedes' typical double coil spring swing axle in rear. An innovative dashboard-operated rear load-leveling suspension engaged a torsion bar to increase stiffness by one-third when needed, and a pedal-operated central lubrication system kept friction points silent.[2] Brakes were hydraulic drum all around, steering worm-and-sector, replaced in 1952 by recirculating ball.

A total of 6,214 saloons and 591 Cabriolet Ds, retroactively referred to as the "300a" series, were produced through September, 1955, including a brief 300b run incorporating elements of the 300c's partial facelift prior to its debut.

300b

The 300b (W186) was introduced in March 1954, adding vacuum assisted power brakes and front door vent windows. Engine power was upped to 125 PS (92 kW; 123 hp) via different Solex carburetors and an increased compression ratio of 7.5:1.

300c

The 300c (W186) made its debut in September, 1955, adding a larger rear window and optional 3-speed Borg-Warner automatic transmission. It was priced at $10,864 in the United States (DM 22,000 on the home market), with the convertible almost a third more at $14,231 (DM 24,700).

A special Innenlenker limousine (also called the Type 300 Lang) with on a 20 cm (7.9 in) longer wheelbase became available from July, 1956, priced at DM 25,000.

A total of 1,432 300c saloons were produced through July, 1957. Only 51 300c series Cabriolet D's were built through June 1956, when the model was dropped.

Successor

300d (W189)

Main article: Mercedes-Benz W189
The limousine-length Mercedes-Benz 300d (W189) was introduced in 1957

The 300c was succeeded by a limousine-length "300d" (W189) in 1957. It featured sweeping changes that included revised bodywork, fuel injection, and unique hardtop configuration transforming it into a pillarless phaeton.

See also

References

Notes

  1. ^ a b Deutsche Autos, Band 4, 2001.
  2. ^ a b Classic and Sportscar Magazine, February 1994, Pp. 52-55
  3. ^ "Mercedes Benz 300 | Buy & Sell | Beverly Hills Car Club".
  4. ^ "300 300b 300c 300d Convertible Sedan 1951-1962". Silverstarrestorations.com. Retrieved 2010-10-01.

Bibliography

  • Barrett, Frank (1998). Illustrated Buyer's Guide Mercedes-Benz. Motorbooks International Illustrated Buyer's Guide series (2nd ed.). Osceola, WI, USA: MBI Publishing. ISBN 0-7603-0451-3.
  • Clarke, R.M., ed. (1987). On Mercedes 1952-1962. Road & Track Series. Cobham, Surrey, UK: Brooklands Books. ISBN 1-869826-40-X.
  • Hartmann, Matthias (2017). Das große Mercedes-Cabrio-Buch [The Big Mercedes Cabrio Book] (in German) (reprint of the original 1992 ed.). Königswinter, Germany: Heel Verlag. ISBN 9783958435810.
  • Hofner, Heribert (2011). Mercedes-Benz Typenkunde [Mercedes-Benz Type Study] (in German). Vol. Band 3. Modelle der Oberklasse von 1951 bis 1972, Luxusklasse, S-, SL- und SLC-Klasse [Volume 3. Upper class models from 1951 to 1972, Luxury class, S-, SL- and SLC-Class]. Bielefeld, Germany: Delius Klasing. ISBN 9783768832786.
  • Koehling, Bernd S. (2021). Mercedes-Benz: Everything you want to know about the 300 and 300S: From the 300 Sedan to the 300Sc Cabriolet. Independently published. ISBN 9798723506695.
  • Larimer, Fred (2004). Mercedes-Benz Buyer's Guide: Roadsters, Coupes, and Convertibles. St. Paul, MN, USA: MBI Publishing. ISBN 0760318115.
  • Niemann, Harry (2006). Personenwagen von Mercedes-Benz: Automobillegenden und Geschichten seit 1886 [Passenger Cars from Mercedes-Benz: Automobile Legends and Stories since 1886] (in German). Stuttgart: Motorbuch Verlag. ISBN 3613025965.
  • Nitske, W. Robert (1995). Mercedes-Benz Production Models Book 1946-1995 (4th ed.). Osceola, WI, USA: MBI Publishing. ISBN 0-7603-0245-6.
  • Oswald, Werner [in German] (2001). Deutsche Autos [German Cars] (in German). Vol. Band [Volume] 4: 1945–1990 Audi, BMW, Mercedes, Porsche und andere [and others]. Stuttgart: Motorbuch Verlag. ISBN 3613021315.
  • ——————— (2001). Mercedes-Benz Personenwagen [Mercedes-Benz Passenger Cars] (in German). Vol. Band 2: 1945–1985 [Volume 2: 1945–1985]. Stuttgart: Motorbuch Verlag. ISBN 3613021684.
  • Rohde, Michael; Koch, Detlef (2000). Mercedes-Benz. Typenkompass series (in German). Vol. Band 1. Personenwagen 1945 - 1975 [Volume 1. Passenger Cars 1945 - 1975]. Stuttgart: Motorbuch Verlag. ISBN 361302019X.
  • Sacardi, Cajetan (2013). Mercedes-Benz 300 & 600: Staatslimousinen 1951–1981 [Mercedes-Benz 300 & 600: State Limousines 1951–1981]. Schrader-Typen-Chronik series (in German). Stuttgart: Motorbuch Verlag. ISBN 9783613035324.
  • Schlegelmilch, Rainer W. [in German]; Lehbrink, Hartmut; von Osterroth, Jochen (2013). Mercedes (revised ed.). Königswinter, Germany: Ullmann Publishing. ISBN 978-3-8480-0267-2.
  • Taylor, James (1985). Mercedes-Benz since 1945: A Collector's Guide. Vol. 1: The 1940s and 1950s. Croydon, UK: Motor Racing Publications. ISBN 0-900549-95-5.
  • Wiedmaier, Michael (2004). Mercedes-Benz 300: Mythos in vier Generationen [Mercedes-Benz 300: Myth in Four Generations]. WKP-Edition Klassik series (in German). Freilassing: WKP-Verlag. ISBN 3980727130.
  • Zeichner, Walter (1990). Mercedes Benz 300: 1951-1962 – Sedans, Coupes, Cabiolets. Schiffer Automotive Series. West Chester, PA, USA: Schiffer Publishing. ISBN 0887402496.
  • "300 S (W188)". Phil Seed's Virtual Car Museum. Retrieved December 1, 2005.
  • "300 (W186, W189)". Phil Seed's Virtual Car Museum. Retrieved December 1, 2005.
  • "Mercedes-Benz Type 300 Adenauer". MBZPonton.Org. Retrieved December 1, 2005.

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