PKW4201 107 series SL-Class Roadsters, 1971 - 1985

107 series SL-Class Roadsters, 1971 - 1985

In spring 1971, another production sports car was presented with the Type 350 SL, replacing the 280 SL, which had been built since January 1968. Technically, this model was a brand new development which had almost nothing in common with its predecessor. However, the same basic components had already been used in other Mercedes-Benz models: Front and rear wheel suspension was basically the same as that of the " Stroke Eight" models and the V8-engine was a familiar feature of the saloons, coupés and convertibles of the 280 SE 3.5 Type.

With respect to the general concept the differences were less clear: Like its predecessor, the 350 SL was a two-seater with fully retractable roadster hood and removable hard top. However, the new model, represented a once and for all departure from the uncompromisingly hard sports car, - and, incidentally, even the "Pagoda SL", too, was not a true representation of that type - in favour of a more comfortable yet powerful luxury two-seater. The 350 SL - with the internal code name R 107 - was equipped with numerous innovatory details, which were to result in increased passive and active safety and set the course for the future development of passenger cars. The fuel tank was no longer located in the rear of the car but had been transferred to a collision-proof position above the rear axle. In the passenger cabin, an upholstered dashboard, flexible or retractable switches and buttons and the new four-spoked steering wheel with an in-built rebounding device and a broader upholstered centre-piece provided a maximum of safety in case of collision.

New wind deflector profiles at the A-pillars, which served as drainage rails for dirt water in heavy rain and kept the windows clean even in poor weather conditions guaranteed very good vision. Further details, adding to the safety of the car, were clearly visible indicators as well as large taillights, which, thanks to their ribbed surface profile, were almost completely soil-repellent.

Half a year after the launch of the 350 SL a sister model was presented at the Paris Motor Show; this was the Type 350 SLC, a four-seated coupé with fixed roof, which technically and stylistically, closely resembled the roadster, but had a wheelbase which was 360 mm longer. In April 1973, both models, roadster as well as coupé, had also become available with a 4.5-liter V8-engine with increased cubic capacity. A low-compression 195 hp version of this engine, which had been revised to comply with the US-legislation on emissions, had been available for exports since July 1971 and, with the North-American design of the 350 SLC, since July 1972.

In July 1974, the SL model range was again extended: following the oil crisis in 1973, roadster and SLC coupé were now available with the 2.8-liter dohc-injection engine, which had proven its worth for two years in the "Stroke Eight" series and the S-Class. This meant that the customer could now decide between three differently motorised SL models which is nothing unusual today but was a complete novelty in the history of that class then. Only an experienced observer was able to distinguish these models from each other; whereas the 280 SL had narrow tires, the 450 SL had an inconspicuous front spoiler, which was attached to the rear lower end of its front apron and served as an airing device for the radiator.

Between November 1975 and February 1976, all three engines were fitted with a new fuel injection system in order to comply with the stricter emission limits, which had been introduced in most European countries. The electronic injection control "D-Jetronic" by Bosch was replaced by a new mechanical "K-Jetronic", also by Bosch. This step led in all three cases to a certain loss of power; in the 2.8-liter and 3.5-liter engines, compression had been slightly reduced. In order to facilitate maintenance, the two new V8-engines were fitted with a breakerless transistor ignition system and hydraulic valve-clearance compensation. In the 2.8-liter unit, compression was increased to its former value in 1978; with the help of some ancillary measures the former driving performance was regained.

At the Geneva Motor Show in March 1980, an uprated version of the 107 series roadster and coupé was presented; the equipment of the interior including the steering wheel had been brought up to the standard of the S-Class saloons and the same happended with the technology. The former 3-speed automatic transmission was replaced by a 4-speed version. Moveover the light-alloy engines of the S-Class were built into the 107 series models in slightly modified form.

The new Type 500 SL with its 5.0-liter V8-engine, which had been carried over from the 450 SLC 5.0 replaced the 450 SL. The 350 SL, too, was phased out after a production time of nine years; the 380 SL was the successor, with a 3.8-liter aluminium-alloy engine based on the old 3.5-liter V8 with a cast iron block. Only the six-cylinder engine of the 280 SLC was unchanged. There were hardly any external differences to the predecessor; all three SL types now had an aluminium bonnet and the 500 SL also had an aluminium boot lid with a black plastic rear spoiler.

In autumn 1981 both V8-engines were thoroughly modernised as part of the "Mercedes-Benz Energy Concept" for reducing consumption and emissions. This involved not only higher compression, but also camshafts with altered timing, improved injection valves and electronically controlled idling. The altered valve timing meant that maximum torque could be achieved at lower revolutions and was even increased for the 3.8-liter engine. This engine was changed the most. In order to achieve a more favourable volume to surface ratio the bore was reduced and the stroke increased. The modified 3.8-liter V8 thus arrived at a slightly higher capacity. In return for improved economy, slight drops in output had to be accepted; rear axle ratios were altered accordingly.

These modifications came too late for the SLC coupés, however. At the Frankfurt Motor Show in September 1981 their successors, the 380 SEC and the 500 SEC, were presented, but despite a production run of ten years there was still no end in sight for the SL models. Four years after the presentation of the energy concept the SL models were again thoroughly modernised and presented at the International Motor Show in Frankfurt in September 1985. There were minor external changes, improved front wheel suspension and above all, a new range of engines.


  • 81F42
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 79F152
    Mercedes-Benz Typ SL-Roadster der Baureihe W 107, Typ SSK, Typ Pagoden-SL, auf dem Hockenheimring.
    MB SL-Roadster der Baureihe W 107, SSK, Pagoden-SL
  • 81F1
    Mercedes-Benz T-Model 123 and a SL-Roadster (W 107). Touringservice in the snow.
    Mercedes-Benz T-Model 123 and a SL-Roadster (W 107)
  • 81F40
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 81F47
    Mercedes-Benz Typ 380 SL-Roadster der Baureihe 107
    MB Typ 380 SL-Roadster der Baureihe 107
  • 81F48
    Mercedes-Benz Typ 380 SL-Roadster der Baureihe 107
    MB Typ 380 SL-Roadster der Baureihe 107
  • 81F50
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 81F51
    Mercedes-Benz Typ 380 SL-Roadster der Baureihe 107
    MB Typ 380 SL-Roadster der Baureihe 107
  • 81F55
    Mercedes-Benz SL-Roadster der Baureihe 107
Armaturen.
    Mercedes-Benz SL-Roadster der Baureihe 107
  • 81F56
    Mercedes-Benz SL-Roadster der Baureihe 107, Armaturen.
    MB SL-Roadster der Baureihe 107
  • 81F57
    Mercedes-Benz SL-Roadster of model series 107.
    Mercedes-Benz SL-Roadster of model series 107
  • 81F59
    Mercedes-Benz 380 SL
Roadster der Baureihe 107
    Mercedes-Benz 380 SL
  • 81F60
    Mercedes-Benz SL-Roadster of model series 107.
    Mercedes-Benz SL-Roadster of model series 107
  • 83F1
    Mercedes-Benz 107-series SL Roadster and 500 SLC.
    MB SL-Roadster der Baureihe 107
  • 83F2
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 83F4
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 83F6
    Mercedes-Benz SL-Roadster der Baureihe 107
    Mercedes-Benz SL-Roadster der Baureihe 107
  • 83F10
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 83F12
    Mercedes-Benz 500 SL
Roadster der Baureihe 107
    Mercedes-Benz 500 SL
  • 83F13
    Mercedes-Benz SL-Roadster of model series 107.
    Mercedes-Benz SL-Roadster of model series 107
  • 83F43
    Mercedes-Benz PKW Modell-Baureihen aus dem Jahre 1983
    PKW Programm 1983
  • 83F70
    Mercedes-Benz 500 SL
Roadster der Baureihe 107
    Mercedes-Benz 500 SL
  • 83F118
    Mercedes-Benz SL-Sportwagentypen von 1954 bis 1985
Von links, Mercedes-Benz 190 SL-Roadster der Baureihe W 121, Pagoden-SL der Baureihe W 113, SL-Roadster der Baureihe W 107, 300 SL-Roadster und  300 SL-Coupé der Baureihe W 198
    Mercedes-Benz SL-Sportwagentypen von 1954 bis 1985
  • 83F119
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • 83F143
    Mercedes-Benz SL-Roadster der Baureihe 107
    MB SL-Roadster der Baureihe 107
  • A3043
    Mercedes-Benz SL-Roadster Typ 280 SL, 350 SL bzw. 450 SL, aus den Jahren 1971 bis 1985
    MB Baureihe R 107
  • B44448
    Mercedes-Benz SL-Roadster Typ 350 SL, aus den Jahren 1971 bis 1980
    -
  • B44449
    Mercedes-Benz SL-Roadster Typ 280 SL, 350 SL bzw. 450 SL, aus den Jahren 1971 bis 1985
    -
  • C10794
    Mercedes-Benz 450 SE/ SEL
S-Klasse Baureihe W 116  mit M 117 Motor
Mercedes-Benz 8-Zylinder Otto-Motor M 117 aus dem Jahr 1972
    Mercedes-Benz 450 SE/ SEL
  • C14705
    Mercedes-Benz Coupé-SLC, SL-Roadster aus den Jahren 1971 - 1985
S-Klasse-Limousine aus den Jahren 1972 - 1980
    Baureihe 116, Baureihe 107
  • U96034
    Mercedes-Benz 350 SL
Roadster, 1971 - 1980
    Mercedes-Benz 350 SL
  • U96038
    Mercedes-Benz 280 SL, 350 SL bzw. 450 SL
SL-Roadster aus den Jahren 1971 bis 1985
    Mercedes-Benz SL-Roadster
  • U96044
    Mercedes-Benz SL-Roadster Typ 280 SL, 350 SL bzw. 450 SL, aus den Jahren 1971 bis 1985
    MB Baureihe R 107
  • U97114
    Mercedes-Benz 280 SL, 350 SL bzw. 450 SL
SL-Roadster aus den Jahren 1971 - 1985
    Mercedes-Benz Baureihe R 107
  • U97222
    Durchsichtzeichnung, Mercedes-Benz Roadster Typ 380 SL, Ausführung ab Frühjahr 1980
    MB Baureihe R 107
  • U97808
    Mercedes-Benz Typ 350 SL-Roadster, noch getarnt. Letzte Testrunden auf dem Hockenheimring unmittelbar vor der Vorstellung des neuen Typs.
    MB Baureihe R 107
  • U97913
    Entwicklungsphasen des Mercedes-Benz Roadster Typ 350 SL. Ideenskizzen, die zwar nicht realisiert wurden, aber doch in Details Anklänge von stilistischen Merkmalen zeigen.
    MB Baureihe 107, Designzeichnung
  • U97916
    Entwicklungsphasen des Mercedes-Benz Typ 350 SL. Kühler markannter Mercedes-Modelle im Laufe der Zeit. Von links: Spitzkühler des 300 S von 1952, dann der schon etwas kleinere Kühlergrill des 220 von 1954, gefolgt vom Typ 190 aus dem Jahre 1963. Nur halb so hoch wie der Spitzenkühler ist der Grill des Mercedes 200 der neuen Generation, ganz rechts aussen ein Entwurf für den 350 SL
    MB Baureihe 107
  • 71031-58
    Mercedes-Benz SL-Roadster Typ 280 SL, 350 SL bzw. 450 SL, aus den Jahren 1971 bis 1985
    MB Baureihe R 107
  • 71103-6A
    Mercedes-Benz SL-Roadster Typ 350 SL, aus den Jahren 1971 bis 1980
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