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Mercedes-Benz 300 S/300 Sc
1953 Mercedes-Benz 300 S roadster
Overview
Manufacturer	Mercedes-Benz
Production	1951−1958 W188 Coupé: 314 W188 Cabriolet/Roadster.: 446[1]
Body and chassis
Class	Two-door luxury car
Body style	2 door coupé 2-door cabriolet 2-door roadster
Layout	FR layout
Platform	Mercedes-Benz W188
Related	Mercedes-Benz 300 Mercedes-Benz 300d Mercedes-Benz 300SL
Powertrain
Engine	2996 cc M188 I6
Transmission	4-speed manual
Dimensions
Wheelbase	W188: 2,900 mm (110 in)
Length	W188: 4,700 mm (190 in)
Width	W188: 1,916 mm (75.4 in)
Height	W188: 1,510 mm (59 in)
Curb weight	W188: 1,670 kg (3,680 lb)
Chronology
Predecessor	Mercedes-Benz 770
Successor	Mercedes-Benz W112

The Mercedes-Benz W188 was a two-door luxury sports tourer produced by Mercedes-Benz between 1951 and 1958. The company's most expensive and exclusive automobiles, the elegant, hand-built 300 S (1951-1954) and its successor 300 Sc (1955-1958) were the pinnacle of the Mercedes line of their era.

The pair's conservative styling belied their technological advances,^[2] sharing numerous design innovations and mechanical components with the iconic Mercedes-Benz 300 SL "Gullwing", including engine, suspension, and chassis.

From July 1952 to August 1955, a total of 216 Coupés, 203 Cabriolet As, and 141 Roadsters were produced.^[1][3]

The hand-built two-door 300 S (W188) was Mercedes-Benz's top-end vehicle on its introduction at the Paris Salon in October 1951. It was available as a 2-seat roadster, 2+2 coupé, and cabriolet (with landau bars, officially Cabriolet A). Although mechanically similar to the much larger contemporary four-door 300 (W186), the additional craftsmanship, visual elegance, and 50% higher price tag elevated the W188^[4] to the apex of its era's luxury cars.

The 300 S was fitted with a high-performance version of the W186's 3.0 L (2996 cc/182 in³) overhead cam, aluminum head M186 straight-6, the M188. Designed to give reliable service under prolonged hard use, the engine featured deep water jackets, an innovative diagonal head-to-block joint that allowed for oversized intake and exhaust valves, thermostatically controlled oil cooling, copper-lead bearings, and a hardened crankshaft. Triple Solex carburettors and 7.8:1 compression and raised maximum output to 150 PS (110 kW; 150 hp) at 5000 rpm.

The 300 Sc (W188) appeared in 1955, featuring upgrades to both its engine and suspension. Following the high-performance 300SL Gullwing's lead a year earlier, the Sc's inline-six received a version of its mechanical direct fuel-injection, which delivered a significantly detuned 175 PS (129 kW; 173 hp) at 5400 rpm. Mercedes-Benz's "low-pivot" independent suspension was fitted in the rear. Only a pair of chrome strips on either side of the hood visually distinguished it from its precursor.

Prices rose to DM 36,500, and 98 Coupés, 49 Cabriolet As, and 53 Roadsters were built through April 1958.^[1]

• "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.