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 automobile, the elegant, hand-built two-door 300 S (1952-1955) 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, sharing numerous design innovations and mechanical components with the iconic Mercedes-Benz 300 SL "Gullwing", including engine, suspension, and chassis.

In addition, it shared other refinements with Mercedes' flagship four-door (W186) 300 "Adenauer" sedan, including a pedal-operated chassis central lubrication system, and a dashboard operated electrical torsion-bar activated rear load-leveling suspension leveling system.

The W188 was available as a hard-topped coupe, a cabriolet, and a roadster (fitted with a lighter, fully retractable soft top without the cabriolet’s heft and large landau bars).

A total of 760 W188s were produced between 1952 and 1958, 560 300S and 200 300 Sc.

300 S

The 300 S (W188) was introduced at the Paris Salon in October 1951. It was available as a 2-seat roadster, 2+2 coupé, and cabriolet (officially the Cabriolet A). Although mechanically similar to the much larger contemporary four-door (W186) 300 "Adenauer" sedan, the additional craftsmanship, visual elegance, and 50% higher price tag elevated the W188 series to the apex of its era's luxury cars.

The 300 S was fitted with a high-performance M188 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.

From July 1952 to August 1955, a total of 560 300 S automobiles were built - 216 Coupés, 203 Cabriolet As, and 141 Roadsters were produced.

300 Sc

The 300 Sc (W188) appeared in 1955, featuring upgrades to both its engine and suspension derived from the high-performance 300SL Gullwing introduced a year earlier and the (W186) 300c, its most advanced version. These included the Sc's new M199 inline-six receiving a significantly detuned version of the 300 SL's M198 mechanical direct fuel-injection system, and a rear suspension improvement from the 300c.

With an increased 8.55:1 compression ratio, the M199 produced 175 hp (130 kW) at 5400 rpm, and 188 lb⋅ft (255 N⋅m) at 4300 rpm.

Prices rose to DM 36,500, and a total of 200 300 Sc's were built - 98 Coupés, 49 Cabriolet As, and 53 Roadsters through April 1958.

References

Notes

Additional sources

External links

• "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.