A lot of cars appearing in the German entry lists in the early years of the 1-litre class were listed under the Eigenbau heading, Wartburg Eigenbau being very popular. However since Eigenbau is German for "Home Built" it is likely that these were either, as the name suggests, home-built cars or modified versions of others e.g. in 1964 a Lola Eigenbau appeared. Without further evidence these cars will have to remain lumped under this general heading.
   
Drivers:  
1964

Lola-Höhreich Eigenbau
Richard Höhfeld, Heinrich Oestreich.

Wartburg-Eigenbau
Willy Arhenholz, Longin Bielak, Jerzy Jankowski, Frank Menzel, Wladislaw Szulczewski, Grzegorz Timoschek, Jiri Vohralik, Helmut Zimmer.

   
1965

Eigenbau
Susta.

Wartburg-Eigenbau
Willy Arhenholz, Longin Bielak, Alois Gbelec, Josef Kielbania, Wolfgang Krug, Wladislaw Szulczewski, Grzegorz Timoschek, Erhard Winkler.

   
1966

Cooper-Eigenbau
Heinrich Brendt.

Wartburg-Eigenbau
Otto Auerbach, Alois Gbelec, Erhard Winkler.

   
1967

Cooper-Eigenbau
Heinrich Brendt.

Eigenbau
György Fülöp, Alois Gbelec, Sandor Kiss, Henri Saarm.

Wartburg-Eigenbau
Otto Auerbach, Erhard Winkler.

   
1968 Eigenbau
Alois Gbelec.
   
1970 Eigenbau
Martin Schulz, Miklos de Sorgo.
   
1971 Eigenbau
Werner Eschrich, Martin Schulz.
   
1972 Eigenbau
Werner Eschrich, Manfred Kuhn, Martin Schulz, Hartmut Thasler.