The Opel/Vauxhall authorised networks had very high market shares on the first of these markets, while on the second, GME was the only supplier able to offer all of the technical information needed by repairers of its Opel/Vauxhall vehicles.
Neist esimesel turul kuulus Opeli ja Vauxhalli volitatud võrgustikele väga suur turuosa ning teisel turul oli GME ainuke tarnija, kes suutis pakkuda kõiki tehnilisi andmeid, mida on vaja Opeli ja Vauxhalli sõidukite remontimiseks.