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220S / 220SE Cabriolet and Coupe 1956-1960
INTRODUCTION
These very collectible cabriolets and
coupes are referred to as 'Ponton' cars,
which has to do with the front
suspension subframe design. When it
first came out, a German journalist
likened to a pontoon or bridge spanning
the engine bay. (see photo)
More adventurous in styling than the saloons, convertibles and coupes for this series came with plenty of
options including fitted luggage, two-tone paint, a front bench seat and whitewall tires. These were among
the last Mercedes Benz which offered a manual transmission only.
HISTORY of the 220S & 220 SE Cabriolet & Coupe
The first 220S Cabriolet was introduced at the Frankfurt Auto Show in September of 1955. The first
production cabriolet rolled off the assembly line in July of 1956. The coupes followed in October of 1956.
These cars were very luxurious for their time. Of course the larger 300 series cars were even more
glamourous and exclusive. Mercedes Benz realized that there was a market for a less expensive, more
personal automobile. This was achieved by shortening the chassis of the very successful 220 Sedan by 4.7
inches and adding lots of chrome, wood and leather. Still hand-built, these elegant automobiles were very
driveable. The platform for these fine automobiles are very different from their sedan counterparts. There
are additional floor reinforcements to compensate for the abscence of a roof, the overhang behind the
rear wheel is longer. Longer doors made for a very appealing look to the car and to save weight, the doors
were steel skimmed over alloy frames. Lower in weight, with better structural strength than the previous
model, the 220 was a better handling car as well.
In 1959 the cabriolets and coupes received the 2.2 liter fuel injected power plant which gave them more
power which they needed as they are very heavy automobiles.
Produced until November 1960 there were only 5371 Ponton coupe and cabriolets built over the four
years of production, making it a very rare automobile.
Mechanically these coupes and cabriolets are identical to their sedan counterparts, so mechanical parts
are available. Some items are getting hard to find. All 220's are fairly predictable. All will need water
pumps and engine mounts. Exhaust systems hang low and door locks can get worn, windshield wipers are
sluggish. Rust is a particular problem. (see diagrams below for most common areas for rust problems.
These are very rugged automobiles and will make a great addition as an occational driver or even as a
second full time driver. They are not very fast due to the weight and low horsepower but they will run with
traffic safely.
They were only available with a four speed and a Hydrak
clutch was available. The Hydrak clutch was a innovative
option.(see photo at left) The clutch would actuate
automatically as the driver moved the gear shift lever
which would give you two pedal control with manual
shifting and no clutch pedal.
There were many problems with the Hydrak so it became
one of Mercedes Benz's less successful options.
Most Hydrak clutches have been converted to a regular clutch system and a pedal installed.
Production Numbers:
Production Numbers on the 220S Cabriolets and Coupes from July 1956 to October 1959
Coupe
1251 units
Cabriolet
2178 units
Total:
3429 units
Production Numbers of the 220SE Cabriolets and Coupes from July/October 1958 to November 1960
Coupe
830 units
Cabriolet
1112 units
Total:
1942 units
Buying A 220S & 220SE Cabriolet or Coupe
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
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.
When looking to buy one of these great automobiles, make sure it is complete. Check the windshield
wipers and make sure they work. They are difficult to repair because parts are intricate and hard to
locate. Make sure all the chrome is on the automobile. Chrome pieces for these coupes and cabriolets
are very costly.
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.
Where to find the engine number and chassis number.
The following illustration shows the locations
of the data plates.
•
Chassis number also stamped on forked
support above the plate
•
Engine plate also stamped on crankcase
above the plate
•
Type plate, paintcodes.
•
Body plate
Chassis prefix for 220 S is 180
Chassis prefix for 220 SE is 128.
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. As stated earlier, rust is the main enemy of
the coupes and cabriolets, especially toward the rear of the automobiles. There is chrome trim along the
bottom edge, the metal under this trim gets very rusty. Also around the wheel openings. Check the inner
fender aprons and the mounting flange for the front fenders also the inner fender leading edge of the
hood. Check the mounting area for the support arm on the rear under the rear seat area. Check
headlight buckets, turn signal mounting areas, front fender edge around the door jamb. Check the
quarter panel dogleg area around the jack points. Look at the frame lower cover sections, and lower
firewall where the trunk attaches to the rear quarter panels. Look at the lower trunk lid edge as well as
the trunk floor. Also check the spare tire well and the floor in the passenger compartment (especially if
the car has a sunroof.) The heat ducts on the car were made from pressed cardboard, so they
deteriorate. Fiberglass replacements are available. These cars are the simplest to restore. Their front
end must be in top shape for precise steering.
These pontons are great cars. Very simple to maintain and fun to drive. The best tool to use for
checking the condition of body panels are your hands. The following illustrations will show the most
common rust areas.
# 5
# 4
# 3
# 2
# 1
220S Cabriolet
$27,800.00
$46,600.00
$72,500.00
$108,500.00
$157,000.00
220S Coupe
$11,900.00
$23,600.00
$37,800.00
$60,500.00
$94,000.00
220SE Cabriolet
$26,500.00
$53,400.00
$81,600.00
$128,000.00
$185,500.00
220SE Coupe
$12,900.00
$26,400.00
$43,100.00
$69,000.00
$107,200.00
Rust is the major problem with these wonderful coupes and cabriolets. They are as rust prone as the 190
SL. However, you can still buy all of the metal parts for a 190SL, as they made 50,000 of them. So there are
places making reproduction parts for them. Unfortunately this is not so for the Ponton's. All metal for them
must be hand fabricated.
Technical Specifications
220S
220SE
Engine Type:
6 cyl overhead camshaft (M180)
6 cyl overhead camshaft (M180)
Bore and stroke:
80 x 72.8mm
80 x 72.8mm
Displacement:
2195 cc
2195 cc
Power output:
100 hp@4850 rpm
100 hp@4850 rpm
Compression ratio:
7.6:1
8.7:1
Torque:
16.5mkg @ 3500rpm
19 mkg@ 3800 rpm
Carburetion: (S)
2 dual downdraft carburetors
Fuel Injection: (SE)
Bosch two-plunger pump (into manifold)
Engine speed at 100km/hr:
3320rpm
3320rpm
Gear ratios:
I. 3.52:1
I. 3.65:1
II. 2.32:1
II. 2.36:1
III. 1.52:1
III. 1.53:1
IV. 1.00:1
IV. 1.00:1
Rear axle ratio:
4.10
4.10
Chassis:
unit frame and body
unit frame and body
Suspension:
independent front, single joint swing axle rear,
with coil springs
independent front, single joint swing axle rear,
with coil springs
Brakes and area:
drum, 1064 square cm
drum, 1064 square cm
Wheelbase:
2820 mm
2820 mm
Track front/rear:
1430/1470 mm
1430/1470 mm
Length:
4750 mm
4750 mm
Width:
1740 mm
1740 mm
Height:
1560 mm
1560 mm
Ground clearance:
185 mm
185 mm
Tires:
6.7 x 13 sport
6.7 x 13 sport
Turning circle:
11.7 meters
11.7 meters
Steering type and ratio:
recirculating ball, 21.4:1
recirculating ball, 21.4:1
Weight:
3219 lbs.
3102 lbs
Maximum speed:
99.5 mph
99.5 mph
Acceleration:
17 sec 0-100 km-hr
15 sec 0-100 km-hr
Fuel consumption
13.5 L/100 km (17.4 mpg)
13 L super /100 km (17.4 mpg)
Fuel tank capacity
64 L (16.9gal.)
62 L (16.4 gal.)
Two beautiful examples of the
luxurious Ponton Cabriolets.