Absolute perfection combined with traditional craftmanship: Started in 1984 HK-Engineering was the first organization to specialize in the restoration, maintenance and sales of Mercedes-Benz 300 SL cars.
More than 35 years on, it can be said that the HK-ENGINEERING philosophy of passion, perfection and tradition as the foundation of the organization’s activities surrounding the 300 SL and the trade with premium classic cars has been proven to be right one. The HK-ENGINEERING philosophy stands for the highest quality standards during restoration and, at the same time, preserving as much of the car as possible. The attention to detail as well as the largest use of original vehicle parts the historical vehicles are given a new shine by the Polling team of experts.
THE BEGINNING OF A PASSION
The experience Hans Kleissl gained during the restoration of his own Mercedes-Benz 300 SL Roadster that he had obtained in 1979, led to the growth of an idea of opening and building up his own restoration company. A restoration company dedicated exclusively to this car. For only through dedicated specialization and the thereby resulting growing level of experience could the highest quality levels be attained. Hans Kleissl was the first to carry out this idea of specialization on one car model. In the 80s and 90s it was usual the restoration companies restored any vehicle and not just one model.
EXCLUSIVITY AND PERFECTION IN BUYING, RESTORATION AND SERVICE
The HK-ENGINEERING value proposition contains the greatest preparation and use of original parts in the Polling workshops such as the restoration of old leather seats to retouching and renovating old paint finishes.
UNIQUE FOR OVER 35 YEARS
The preservation of vintage, original vehicles has been a priority at HK-ENGINEERING for over three decades. That is why the company is now regarded not only as a pioneer in the industry worldwide but also as the epitome of outstanding expertise in the 300 SL. This expertise has gradually been transferred to other classic automobiles over the years.
Hans Kleissl
For over three decades Hans Kleissl has dedicated himself to the upkeep of historical culture assets, be it in the automotive sector around the Mercedes-Benz 300 SL or in the reconstruction and restoration of historic buildings such as the Polling Monastery with the old brickyard (Alten Ziegelei) or the Arendsee castle in Brandenburg, Germany.
Hans Kleissl has received many accolades for his dedication. For example, in 2014 he received, in London, the award as the World’s Best Restoration Company. A few years later he was awarded the Federal Medal for Monument Protection for the restoration of the the Arendsee castle and a short time ago he received by the Bavarian State Office for Monument Protection (Landesamt für Denkmalpflege) the 2021 award for the restoration of the Old Brickyard in Polling (Alte Ziegelei).
VISIONARY FROM THE START
Hans Kleissl was far ahead of his time in ensuring originality and the highest standards of quality. Today, Kleissl and his team have a wealth of experience that has made HK-ENGINEERING what it stands for today, craftsmanship par excellence.
Sales
Below you can see the current sales stock of their 300 SL Coupés & Roadsters.
MOTORSPORT
VINTAGE CAR RALLIES – UP CLOSE AND THERE, UNDISTURBED RALLY ENJOYMENT WITH OUR SERVICE CREW
Historical motorsport – our perfectly prepared 300 sl are traditionally always amongst the leaders
