Mercedes-Benz 15/70/100 PS classic cars for sale

History of the Mercedes-Benz 15/70/100 PS

Introduced in the mid-1920s, the Mercedes-Benz 15/70/100 PS represents a milestone in pre-war automotive development. Unveiled in 1924 under the brand 'Mercedes'—prior to the merger forming Mercedes-Benz—the model was developed to convey a sense of grandeur and engineering prowess. Powered by a 4-litre six-cylinder engine equipped with a Roots-type supercharger, the 15/70/100 PS became synonymous with the term ‘Kompressor’ in the luxury segment. The car quickly gained a reputation for its advanced forced induction technology, sturdy chassis, and imposing road presence, attracting attention from affluent clientele and motoring aficionados across Europe. With the fusion into Mercedes-Benz in 1926, the 15/70/100 PS laid the groundwork for future models in the supercharged lineage.

Model History

The 15/70/100 PS entered the Mercedes-Benz portfolio as a direct evolution from the earlier 15/70 PS, benefiting predominantly from the addition of the supercharger. Its legacy continued with the 24/100/140 PS, which further expanded on forced induction technology and performance standards. The model's robust design and engineering principles set a precedent for Mercedes-Benz’s later high-performance saloons and subsequently influenced the iconic S series of the late 1920s.

Highlights of the Mercedes-Benz 15/70/100 PS

Distinctive for its supercharged six-cylinder engine, the 15/70/100 PS is one of the first production vehicles by Mercedes offered with a ‘Kompressor’. The technical brief called for both strong driving performance and reliability for long journeys, a unique combination at the time. The opulent interior, including high-quality leather and wood, set new standards for luxury saloons. The 15/70/100 PS also featured innovative safety elements such as four-wheel brakes, considerably advanced for its era.

Technical Data

Special Editions and Collectible Models

Within the series, certain cabriolet and bespoke-bodied variants commissioned from renowned coachbuilders like Sindelfingen were produced in limited numbers. These individually tailored versions often featured custom interiors and unique bodywork detailing, making them particularly sought after among collectors specialising in pre-war German luxury vehicles.

Weak Spots and Common Issues

Potential buyers should be attentive to the condition of the supercharger and the lubrication system, as these are known areas requiring periodic specialist attention. Due to their age, many cars may also present with wear in the braking system or chassis components—comprehensive documentation of restoration work and regular maintenance records are essential for preserving performance and reliability.

Engine and Performance, Transmission and Handling

With up to 100 PS on tap when the supercharger is engaged, the 15/70/100 PS was capable of reaching a top speed approaching 110 km/h—remarkable for the mid-1920s. The four-speed manual gearbox and robust rear-wheel-drive setup provide a direct, analog driving experience, while the strong brakes enhance safety for a car of this vintage. Handling is characterised by a comfortable, stable ride thanks to the long wheelbase and conventional suspension. Among the highlighted body variants, the Sindelfingen-bodied six-seater saloon stands out for combining comfort with dynamic capability, and the luxury cabriolet versions are especially notable for their combination of open-top driving experience and technical sophistication.

Interior, Comfort, Exterior and Design

The exterior styling of the 15/70/100 PS reflects the distinct elegance of mid-1920s German automotive design—characterised by an upright radiator grille, sweeping fenders, and grand proportions. Interiors featured fine leather upholstery, hand-finished wood trim, and extensive instrumentation. Some models offered luxurious extras such as rear compartment heating, glass partitions, and specialised luggage solutions. Special external design elements included the use of two-tone paint schemes and nickel-plated details, especially on higher-specification or bespoke bodies.

Other relevant features

The Roots-type supercharger system not only provided notable extra performance but also an acoustic signature unique to early Mercedes ‘Kompressor’ vehicles. Advanced features like the pressurised lubrication system and extensive tool kits underscored the car’s focus on longevity and reliability, appealing to owners who expected vehicles to cover substantial mileages in comfort.

Summary

The Mercedes-Benz 15/70/100 PS embodies a significant chapter in the brand’s evolution, merging innovative engineering and bespoke luxury in a highly distinctive pre-war package. Its combination of supercharged performance, craftsmanship, and period-correct comfort ensures its ongoing appeal among collectors and historic motoring enthusiasts seeking authentic 1920s German automotive heritage.