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300S & 300Sc Cabriolet ~ Coupe ~ Roadster 1951-1958
HISTORY of the 300S & Sc
The 300S and 300Sc series cars were the top of the line cars. These two-door automobiles are
extremely rare and desireable. due to the extremely low production figures of a mere 760 units! First
shown in October 1951 at the Paris Salon, they relied heavily on the technology of the Type 300. The
300S has majestic styling and it offered the most power seen in a postwar design, with a fully
independent rear suspension and a gracefully curved rear deck. Initially, it was available in two body
styles; a fixed roof coupe with an elegantly formal air and a convertible with functional landau bars. A
third style called the roadster could be specified. It had no landau bars and a top that completely
disappeared when folded. Road and Track magazine stated, "Where the Mercedes Benz 300S has been
since its first appearance it has caused a quiet riot of enthusiasum and its attitude of 'going' even when
it's standing still." Often considered inspired by the 540K of the 1930s, Mercedes raised the engine
compression over the 300 model to 7.8:1 using 3 Solex downdraft carburetors resulting in 150HP at
5000 rpm, meaning the car could exceed 100km/h in less than 15 seconds and attain almost 180km/h.
The Cabriolet model features huge chromed irons on the sides of its convertible top, with a tiny window
slot in the back. Prices were between 34,500 and 36,500 DM. * The 300S model was later replaced in
production by the 300Sc which a featured fuel injected engine.
In 1955, the S became the Sc by virtue of higher compression and direct block fuel injection. Both were
close in specification. The biggest difference between the two is the fuel injection system on the Sc, and
the Sc introduced hydrovac power brakes. There are also a few cosmetic differences, such as the 300S
has rubber strips on the bumper whereas the 300Sc has solid chrome plate bumpers with the word
"einspritzmotor" on the rear bumper. The Sc has a stronger cowl. The transmission cover is not
removable. Under the hood on the side panels, the Sc has horizontal chrome moldings.
An automobile which combines old world, hand crafted workmanship with classic styling, interior
appointments that are second to none.
When new, the price was a staggering (for the time) $12,500.00. It was the most expensive luxury car of
it's day. Twice as much as the 300SL and the American luxury cars of the day. Hence this was a car of
the rich and famous including the Aga Khan, The King of Jordan, Prime Minister of Thailand, Clark
Gable, Bing Crosby, Errol Flynn and Cary Grant.
Production Numbers:
Production of 300S models from September 1951 until August 1955
Coupe
216 units
chassis prefix 188 011
Cabriolet
203 units
chassis prefix 188 010
Roadster
141 units
chassis prefix 188 011
Total:
560 units
Production of 300Sc models from September/December 1955 to April 1958
Coupe
98 units
chassis prefix 188 014
Cabriolet
53 units
chassis prefix 188 015
Roadster
49 units
chassis prefix 188 013
Total:
200 units
Buying A 300S & 300Sc
Know what you're buying and what to look for and know what to avoid.
When these cars are well maintained and properly taken care of, they increase in value.
PLEASE READ THIS FIRST!
A car's value is determined by condition. Standard condition guidelines are as follows:
Excellent- As close to perfect original or a very well restored vehicle. Generally a body-off restoration, but
a well done body-on restoration that has been fully detailed may qualify. The vehicle is stunning to look at.
Everything works as new, all equipment is original, NOS or excellent quality reproductions. PLEASE KEEP IN
MIND THAT # 1 CARS ARE VERY RARE, AND ARE ORIGINAL RIGHT DOWN TO THE HOSE CLAMPS. DO NOT
ASSUME THAT JUST BECAUSE A CAR HAS A #1 ASKING PRICE, THAT IT IS IN # 1 CONDITION. MOST
CARS FOR SALE OUT THERE ARE LOW # 2 TO HIGH # 3 CARS.
Very Good- An extremely presentable vehicle showing minimal wear, or a well restored vehicle. Runs and
drives smooth and tight. Needs no mechanical or cosmetic work. All areas have been detailed. Beautiful to
look at but clearly not a # 1 vehicle.
Good- Presentable inside and out with some signs of wear. Not detailed but clean. Body should be straight
and solid with no rust-through anywhere. Shiny, attractive paint but may have evidence of minor fading or
checking or other imperfections. Runs and drives well but may need some minor mechanical or cosmetic
work. But it is useable and enjoyable as is.
Fair- Runs and drives ok but needs work throughout the vehicle. Body shows signs of wear or previous
restoration work. Any rust should be minimal and not in any structural areas. Cosmetics, body and
mechanicals all need work to some degree.
Poor- In need of complete restoration, but is complete and not a rust bucket beyond repair. May or may not
run but is not roadworthy.
These values are from Collector Car Market Review and are based on actual sales of vehicles,
not on asking prices of vehicles. Asking prices, and sales prices are very different.
Currently: (these are approximate values based on actual sales of vehicles.) Prices last updated Sept 2019
# 5
# 4
# 3
# 2
# 1
300S Cabriolet
$133,850.00
$268,000.00
$400,000.00
$515,000.00
$667,000.00
300S Roadster
$134,000.00
$256,000.00
$398,500.00
$505,000.00
$660,000.00
300S Coupe
$93,300.00
$171,000.00
$249,850.00
$340,000.00
$475,200.00
300Sc Cabriolet
$217,100.00
$387,650.00
$613,350.00
$790,000.00
$1,069,700.00
300Sc Roadster
$230,100.00
$383,500.00
$576,050.00
$730,000.00
$993,200.00
300Sc Coupe
$108,950.00
$217,050.00
$364,050.00
$490,000.00
$656,600.00
Keep in mind that due to the high cost of restoration, mint examples of these cars can and
have sold for more than the prices quoted here.
Condition of a car CANNOT be determined by its location. Don't be fooled by a car's current geographical
location. Just because a car is in California today, does not mean that is where it started life.
Due to the high cost of these cars, your best bet is to have any car you are considering purchasing completely
checked out by a professional. Condition of a car CANNOT be determined by its location. Don't be fooled by a
car's current geographical location. Just because a car is in California today, does not mean that is where it
started life. It is very important to find complete, unchanged cars. Items on the exterior of this particular car are
hard to find, and are unique to these automobiles. Rust is not a real problem on this car; however it is always a
good idea to check. The box sections under the door sills can get rusty. Because of trapped moisture, it is
important to check for rust in the trunk floor and also around the headlights.
Where to find the engine number and chassis number. Chassis number plate can be found on the firewall. Look
at the car in general. Walk around the car several times looking at the gaps for the doors, trunk and hood. Look
at the general overall condition of the car.
The chassis number prefixes are as follows:
Cabriolet
Coupe
Roadster
Engine Prefix
300S
1 88 010
1 88 011
1 88 012
M188
300Sc
1 88 013
1 88 014
1 88 015
M199
Technical Specifications
300S
300Sc
Engine Type:
6 cyl overhead camshaft
6 cyl overhead camshaft
Bore and stroke:
85 x 88mm
85 x 88mm
Displacement:
2996 cc
2996 cc
Power output:
150 hp(DIN) @3800 rpm
150 hp(DIN) @3800 rpm
Compression ratio:
7.8:1
8.5:1
Torque:
23.5 mkg @ 3800rpm
26 mkg @ 4300 rpm
Carburetion:
3 dual downdraft carburetors
Bosch injection pump
Engine speed at 100km/hr:
3260rpm
3260 rpm
Gear ratios:
I. 3.33:1
I. 3.55:1
II. 2.12:1
II. 2.30:1
III. 1.46:1
III. 1.53:1
IV. 1.00:1
IV. 1.00:1
Rear axle ratio:
4.125
4.44
Chassis:
X- shaped oval tubular
X- shaped oval tubular
Suspension:
independent front, swing axle rear with coil
springs
independent front, single pivot swing axle rear,
with coil springs
Brakes and area:
drum, 1270 square cm
drum, 1470 square cm
Wheelbase:
2900 mm
2900 mm
Track front/rear:
1480/1252 mm
1480/1252 mm
Length:
4700 mm
4700 mm
Width:
1860 mm
1860 mm
Height:
1510 mm
1510 mm
Ground clearance:
180 mm
180 mm
Tires:
6.7 x 15 extra
6.7 x 15 extra
Turning circle:
12.2-12.7 meters
12.2-12.9 meters
Steering type and ratio:
recirculating ball, 21.4:1
recirculating ball, 21.4:1
Weight:
1760 kg (3880lbs.)
1780 kg (3924 lbs.)
Maximum speed:
160 mph
180 mph
Acceleration:
15 sec 0-100 km-hr
19 sec 0-100 km-hr
Fuel consumption
14 L/100 km (13.7 mpg)
14 L/100 km (13.7 mpg)
Fuel tank capacity
85 L (22 gal.)
85 L (22 gal.)